Release Notes - ZooKeeper - Version 3.5.8

Bug

ZOOKEEPER-1677 - Misuse of INET_ADDRSTRLEN
ZOOKEEPER-2164 - Fast leader election keeps failing
ZOOKEEPER-2307 - ZooKeeper not starting because acceptedEpoch is less than the currentEpoch
ZOOKEEPER-2490 - Infinitely connect on windows
ZOOKEEPER-3215 - Handle Java 9/11 additions of covariant return types to java.nio.ByteBuffer methods
ZOOKEEPER-3726 - Invalid ipv6 address comparison in C client
ZOOKEEPER-3737 - Unable to eliminate log4j1 transitive dependency
ZOOKEEPER-3739 - Remove use of com.sun.nio.file.SensitivityWatchEventModifier
ZOOKEEPER-3756 - Members failing to rejoin quorum
ZOOKEEPER-3760 - Remove a useless throwing CliException
ZOOKEEPER-3769 - Fast leader election does not end if leader is taken down
ZOOKEEPER-3780 - Restore Version.getRevision() to be backward compatible

Improvement

ZOOKEEPER-2779 - Add option to not set ACL for reconfig node
ZOOKEEPER-3355 - Remove tbd From Docs
ZOOKEEPER-3357 - Remove Dead Link from ZooKeeper Programmer's Guide
ZOOKEEPER-3678 - Remove Redundant GroupID from Maven POMs
ZOOKEEPER-3679 - Upgrade maven-compiler-plugin For ZooKeeper-jute
ZOOKEEPER-3723 - Zookeeper Client should not fail with ZSYSTEMERROR if DNS does not resolve one of the servers in the zk ensemble.
ZOOKEEPER-3727 - Fix 3.5 source tarball to represent the git repository
ZOOKEEPER-3785 - Make sources buildable with JDK14

Task

ZOOKEEPER-3734 - Upgrade jackson-databind to address CVE-2020-8840
ZOOKEEPER-3751 - Upgrade jackson-databind to 2.10 from 2.9
ZOOKEEPER-3794 - Upgrade netty to address CVE-2020-11612
ZOOKEEPER-3817 - Owasp failing due to CVE-2020-9488

Release Notes - ZooKeeper - Version 3.5.7

Bug

ZOOKEEPER-1105 - c client zookeeper_close not send CLOSE_OP request to server
ZOOKEEPER-2282 - chroot not stripped from path in asynchronous callbacks
ZOOKEEPER-3057 - Fix IPv6 literal usage
ZOOKEEPER-3496 - Transaction larger than jute.maxbuffer makes ZooKeeper unavailable
ZOOKEEPER-3590 - Zookeeper is unable to set the zookeeper.sasl.client.canonicalize.hostname using system variable
ZOOKEEPER-3613 - ZKConfig fails to return proper value on getBoolean() when user accidentally includes spaces at the end of the value
ZOOKEEPER-3633 - AdminServer commands throw NPE when only secure client port is used
ZOOKEEPER-3644 - Data loss after upgrading standalone ZK server 3.4.14 to 3.5.6 with snapshot.trust.empty=true
ZOOKEEPER-3667 - set jute.maxbuffer hexadecimal number throw parseInt error
ZOOKEEPER-3699 - upgrade jackson-databind to address CVE-2019-20330
ZOOKEEPER-3716 - upgrade netty 4.1.42 to address CVE-2019-20444 CVE-2019-20445
ZOOKEEPER-3718 - Generated source tarball is missing some files
ZOOKEEPER-3719 - C Client compilation issues in 3.5.7-rc

Improvement

ZOOKEEPER-1467 - Make server principal configurable at client side.
ZOOKEEPER-2084 - Document local session parameters
ZOOKEEPER-3388 - Allow client port to support plaintext and encrypted connections simultaneously
ZOOKEEPER-3453 - missing 'SET' in zkCli on windows
ZOOKEEPER-3482 - SASL (Kerberos) Authentication with SSL for clients and Quorum
ZOOKEEPER-3627 - Update Jackson to 2.9.10.1 and the Owasp plugin to 5.2.4
ZOOKEEPER-3638 - Update Jetty to 9.4.24.v20191120
ZOOKEEPER-3703 - Publish a Test-Jar from ZooKeeper Server
ZOOKEEPER-3708 - Move Logging Code into Logging Guard in Learner
ZOOKEEPER-3715 - Kerberos Authentication related tests fail for new JDK versions

Task

ZOOKEEPER-3677 - owasp checker failing for - CVE-2019-17571 Apache Log4j 1.2 deserialization of untrusted data in SocketServer
ZOOKEEPER-3704 - upgrade maven dependency-check to 5.3.0

Release Notes - ZooKeeper - Version 3.5.6

Sub-task

ZOOKEEPER-2609 - Add TTL Node APIs to C client
ZOOKEEPER-3443 - Add support for PKCS12 trust/key stores

Bug

ZOOKEEPER-2694 - sync CLI command does not wait for result from server
ZOOKEEPER-2891 - Invalid processing of zookeeper_close for mutli-request
ZOOKEEPER-2894 - Memory and completions leak on zookeeper_close
ZOOKEEPER-3056 - Fails to load database with missing snapshot file but valid transaction log file
ZOOKEEPER-3105 - Character coding problem occur when create a node using python3
ZOOKEEPER-3320 - Leader election port stop listen when hostname unresolvable for some time
ZOOKEEPER-3404 - BouncyCastle upgrade to 1.61 might cause flaky test issues
ZOOKEEPER-3405 - owasp flagging jackson-databind
ZOOKEEPER-3433 - zkpython build broken after maven migration
ZOOKEEPER-3498 - In zookeeper-jute project generated source should not be in target\classes folder
ZOOKEEPER-3510 - Frequent 'zkServer.sh stop' failures when running C test suite
ZOOKEEPER-3518 - owasp check flagging jackson-databind 2.9.9.1

Improvement

ZOOKEEPER-3263 - Illegal reflective access in zookeer's kerberosUtil
ZOOKEEPER-3370 - Remove SVN specific revision generation
ZOOKEEPER-3494 - No need to depend on netty-all (SSL)
ZOOKEEPER-3519 - upgrade dependency-check to 5.2.1

Test

ZOOKEEPER-3455 - Java 13 build failure on trunk: UnifiedServerSocketTest.testConnectWithoutSSLToStrictServer

Task

ZOOKEEPER-3362 - Create a simple checkstyle file
ZOOKEEPER-3441 - OWASP is flagging jackson-databind-2.9.9.jar for CVE-2019-12814
ZOOKEEPER-3463 - Enable warning messages in maven compiler plugin
ZOOKEEPER-3539 - Fix branch-3.5 after upgrade on ASF CI
ZOOKEEPER-3440 - Fix Apache RAT check by excluding binary files (images)
ZOOKEEPER-3542 - X509UtilTest#testClientRenegotiationFails is flaky on JDK8 + linux on machines with 2 cores

Release Notes - ZooKeeper - Version 3.5.5

Java 8 users: if you are going to compile with Java 1.8, you should use a recent release at u211 or above.

Sub-task

ZOOKEEPER-2168 - Add C APIs for new createContainer Methods
ZOOKEEPER-2481 - Flaky Test: testZeroWeightQuorum
ZOOKEEPER-2485 - Flaky Test: org.apache.zookeeper.test.FourLetterWordsTest.testFourLetterWords
ZOOKEEPER-2497 - Flaky Test: org.apache.zookeeper.test.QuorumTest.testMultipleWatcherObjs
ZOOKEEPER-2499 - Flaky Test: org.apache.zookeeper.test.SSLTest.testSecureQuorumServer
ZOOKEEPER-2538 - Flaky Test: org.apache.zookeeper.server.quorum.Zab1_0Test.testNormalObserverRun
ZOOKEEPER-2940 - Deal with maxbuffer as it relates to large requests from clients
ZOOKEEPER-3022 - Step 1.1 - Create docs and it maven structure
ZOOKEEPER-3028 - Create assembly in pom.xml
ZOOKEEPER-3029 - Create pom files for jute, server and client
ZOOKEEPER-3030 - Step 1.3 - Create zk-contrib maven structure
ZOOKEEPER-3031 - Step 1.4 - Create zk-client maven structure
ZOOKEEPER-3032 - Step 1.6 - Create zk-server maven structure
ZOOKEEPER-3033 - Step 1.2 - Create zk-recipes maven structure
ZOOKEEPER-3046 - testManyChildWatchersAutoReset is flaky
ZOOKEEPER-3080 - Step 1.5 - Separate jute structure
ZOOKEEPER-3153 - Create MarkDown files and build process for them
ZOOKEEPER-3154 - Update release process to use the MarkDown solution
ZOOKEEPER-3155 - Remove Forrest XMLs and their build process from the project
ZOOKEEPER-3171 - Create pom.xml for recipes and contrib
ZOOKEEPER-3193 - Flaky: org.apache.zookeeper.test.SaslAuthFailNotifyTest
ZOOKEEPER-3202 - Flaky test: org.apache.zookeeper.test.ClientSSLTest.testClientServerSSL
ZOOKEEPER-3222 - Flaky: multiple intermittent segfaults in C++ tests
ZOOKEEPER-3223 - Configure Spotbugs
ZOOKEEPER-3224 - CI integration with maven
ZOOKEEPER-3225 - Create code coverage analysis with maven build
ZOOKEEPER-3226 - Activate C Client with a profile, disabled by default
ZOOKEEPER-3256 - Enable OWASP checks to Maven build
ZOOKEEPER-3275 - Fix release targets: package, tar, mvn-deploy
ZOOKEEPER-3285 - Move assembly into its own sub-module

Bug

ZOOKEEPER-1392 - Should not allow to read ACL when not authorized to read node
ZOOKEEPER-1636 - c-client crash when zoo_amulti failed
ZOOKEEPER-1818 - Fix don't care for trunk
ZOOKEEPER-1823 - zkTxnLogToolkit -dump should support printing transaction data as a string
ZOOKEEPER-1919 - Update the C implementation of removeWatches to have it match ZOOKEEPER-1910
ZOOKEEPER-1990 - suspicious instantiation of java Random instances
ZOOKEEPER-2184 - Zookeeper Client should re-resolve hosts when connection attempts fail
ZOOKEEPER-2251 - Add Client side packet response timeout to avoid infinite wait.
ZOOKEEPER-2261 - When only secureClientPort is configured connections, configuration, connection_stat_reset, and stats admin commands throw NullPointerException
ZOOKEEPER-2284 - LogFormatter and SnapshotFormatter does not handle FileNotFoundException gracefully
ZOOKEEPER-2317 - Non-OSGi compatible version
ZOOKEEPER-2474 - add a way for client to reattach to a session when using ZKClientConfig
ZOOKEEPER-2621 - ZooKeeper doesn't start on MINGW32 (Windows)
ZOOKEEPER-2750 - Document SSL Support for Atomic Broadcast protocol
ZOOKEEPER-2778 - Potential server deadlock between follower sync with leader and follower receiving external connection requests.
ZOOKEEPER-2822 - Wrong ObjectName about MBeanServer in JMX module
ZOOKEEPER-2913 - testEphemeralNodeDeletion is flaky
ZOOKEEPER-2920 - Upgrade OWASP Dependency Check to 3.2.1
ZOOKEEPER-2993 - .ignore file prevents adding src/java/main/org/apache/jute/compiler/generated dir to git repo
ZOOKEEPER-3009 - Potential NPE in NIOServerCnxnFactory
ZOOKEEPER-3034 - Facing issues while building from source
ZOOKEEPER-3041 - Typo in error message, affects log analysis
ZOOKEEPER-3042 - testFailedTxnAsPartOfQuorumLoss is flaky
ZOOKEEPER-3050 - owasp ant target is highlighting jetty version needs to be updated
ZOOKEEPER-3051 - owasp complaining about jackson version used
ZOOKEEPER-3059 - EventThread leak in case of Sasl AuthFailed
ZOOKEEPER-3093 - sync zerror(int rc) with newest error definitions
ZOOKEEPER-3113 - EphemeralType.get() fails to verify ephemeralOwner when currentElapsedTime() is small enough
ZOOKEEPER-3125 - Pzxid inconsistent issue when replaying a txn for a deleted node
ZOOKEEPER-3127 - Fixing potential data inconsistency due to update last processed zxid with partial multi-op txn
ZOOKEEPER-3131 - org.apache.zookeeper.server.WatchManager resource leak
ZOOKEEPER-3156 - ZOOKEEPER-2184 causes kerberos principal to not have resolved host name
ZOOKEEPER-3162 - Broken lock semantics in C client lock-recipe
ZOOKEEPER-3165 - Java 9: X509UtilTest.testCreateSSLContextWithoutTrustStorePassword fails
ZOOKEEPER-3194 - Quorum TLS - fix copy/paste bug in ZKTrustManager
ZOOKEEPER-3210 - Typo in zookeeperInternals doc
ZOOKEEPER-3217 - owasp job flagging slf4j on trunk
ZOOKEEPER-3253 - client should not send requests with cxid=-4, -2, or -1
ZOOKEEPER-3265 - Build failure on branch-3.4

New Feature

ZOOKEEPER-236 - SSL Support for Atomic Broadcast protocol
ZOOKEEPER-2933 - Ability to monitor the jute.maxBuffer usage in real-time
ZOOKEEPER-3066 - Expose on JMX of Followers the id of the current leader

Improvement

ZOOKEEPER-1908 - setAcl should be have a recursive function
ZOOKEEPER-2368 - Client watches are not disconnected on close
ZOOKEEPER-2825 - 1. Remove unnecessary import; 2. contains instead of indexOf > -1 for more readable; 3. Standardize StringBuilder#append usage for CLIENT module
ZOOKEEPER-2826 - Code refactoring for CLI module
ZOOKEEPER-2873 - print error and/or abort on invalid server definition
ZOOKEEPER-3019 - Add a metric to track number of slow fsyncs
ZOOKEEPER-3021 - Umbrella: Migrate project structure to Maven build
ZOOKEEPER-3043 - QuorumKerberosHostBasedAuthTest fails on Linux box: Unable to parse:includedir /etc/krb5.conf.d/
ZOOKEEPER-3063 - Track outstanding changes with ArrayDeque
ZOOKEEPER-3077 - Build native C library outside of source directory
ZOOKEEPER-3083 - Remove some redundant and noisy log lines
ZOOKEEPER-3094 - Make BufferSizeTest reliable
ZOOKEEPER-3097 - Use Runnable instead of Thread for working items in WorkerService to improve the throughput of CommitProcessor
ZOOKEEPER-3110 - Improve the closeSession throughput in PrepRequestProcessor
ZOOKEEPER-3152 - Port ZK netty stack to netty 4
ZOOKEEPER-3159 - Flaky: ClientRequestTimeoutTest.testClientRequestTimeout
ZOOKEEPER-3172 - Quorum TLS - fix port unification to allow rolling upgrades
ZOOKEEPER-3173 - Quorum TLS - support PEM trust/key stores
ZOOKEEPER-3174 - Quorum TLS - support reloading trust/key store
ZOOKEEPER-3175 - Quorum TLS - test improvements
ZOOKEEPER-3176 - Quorum TLS - add SSL config options
ZOOKEEPER-3195 - TLS - disable client-initiated renegotiation
ZOOKEEPER-3228 - [TLS] Fix key usage extension in test certs
ZOOKEEPER-3229 - [TLS] add AES-256 ciphers to default cipher list
ZOOKEEPER-3235 - Enable secure processing and disallow DTDs in the SAXParserFactory
ZOOKEEPER-3236 - Upgrade BouncyCastle
ZOOKEEPER-3250 - typo in doc - zookeeperInternals
ZOOKEEPER-3262 - Update dependencies flagged by OWASP report
ZOOKEEPER-3272 - Clean up netty4 code per Norman Maurer's review comments
ZOOKEEPER-3273 - Sync BouncyCastle version in Maven build and Ant build
ZOOKEEPER-3274 - Use CompositeByteBuf to queue data in NettyServerCnxn
ZOOKEEPER-3276 - Make X509UtilTest.testCreateSSLServerSocketWithPort less flaky
ZOOKEEPER-3277 - Add trace listener in NettyServerCnxnFactory only if trace logging is enabled
ZOOKEEPER-3312 - Upgrade Jetty to 9.4.15.v20190215

Test

ZOOKEEPER-1441 - Some test cases are failing because Port bind issue.
ZOOKEEPER-2955 - Enable Clover code coverage report
ZOOKEEPER-2968 - Add C client code coverage tests
ZOOKEEPER-3074 - Flaky test:org.apache.zookeeper.server.ServerStatsTest.testLatencyMetrics
ZOOKEEPER-3204 - Reconfig tests are constantly failing on 3.5 after applying Java 11 fix

Task

ZOOKEEPER-925 - Consider maven site generation to replace our forrest site and documentation generation
ZOOKEEPER-3062 - introduce fsync.warningthresholdms constant for FileTxnLog LOG.warn message
ZOOKEEPER-3120 - add NetBeans nbproject directory to .gitignore
ZOOKEEPER-3197 - Improve documentation in ZooKeeperServer.superSecret
ZOOKEEPER-3230 - Add Apache NetBeans Maven project files to .gitignore
ZOOKEEPER-3254 - Drop 'beta' qualifier from Branch 3.5

Release Notes - ZooKeeper - Version 3.5.4

Release 3.5.3 added a new feature ZOOKEEPER-2169 "Enable creation of nodes with TTLs". There was a major oversight when TTL nodes were implemented. The session ID generator for each server is seeded with the configured Server ID in the high byte. TTL Nodes were using the highest bit to denote a TTL node when used in the ephemeral owner. This meant that Server IDs > 127 that created ephemeral nodes would have those nodes always considered TTL nodes (with the TTL being essentially a random number).

ZOOKEEPER-2901 fixes the issue. By default TTL is disabled and must now be enabled in zoo.cfg. When TTL Nodes are enabled, the max Server ID changes from 255 to 254. See the documentation for TTL in the administrator guide (or the referenced JIRAs) for more details.

Sub-task

ZOOKEEPER-2754 - Set up Apache Jenkins job that runs the flaky test analyzer script.
ZOOKEEPER-2792 - [QP MutualAuth]: Port ZOOKEEPER-1045 implementation from branch-3.4 to branch-3.5
ZOOKEEPER-2903 - Port ZOOKEEPER-2901 to 3.5.4
ZOOKEEPER-2939 - Deal with maxbuffer as it relates to proposals
ZOOKEEPER-2981 - Fix build on branch-3.5 for ZOOKEEPER-2939

Bug

ZOOKEEPER-1580 - QuorumPeer.setRunning is not used
ZOOKEEPER-1782 - zookeeper.superUser is not as super as superDigest
ZOOKEEPER-1807 - Observers spam each other creating connections to the election addr
ZOOKEEPER-2101 - Transaction larger than max buffer of jute makes zookeeper unavailable
ZOOKEEPER-2249 - CRC check failed when preAllocSize smaller than node data
ZOOKEEPER-2316 - comment does not match code logic
ZOOKEEPER-2338 - c bindings should create socket's with SOCK_CLOEXEC to avoid fd leaks on fork/exec
ZOOKEEPER-2349 - Update documentation for snapCount
ZOOKEEPER-2355 - Ephemeral node is never deleted if follower fails while reading the proposal packet
ZOOKEEPER-2491 - C client build error in vs 2015
ZOOKEEPER-2581 - Not handled NullPointerException while creating key manager and trustManager
ZOOKEEPER-2690 - Update documentation source for ZOOKEEPER-2574
ZOOKEEPER-2722 - Flaky Test: org.apache.zookeeper.test.ReadOnlyModeTest.testSessionEstablishment
ZOOKEEPER-2725 - Upgrading to a global session fails with a multiop
ZOOKEEPER-2743 - Netty connection leaks JMX connection bean upon connection close in certain race conditions.
ZOOKEEPER-2747 - Fix ZooKeeperAdmin Compilation Warning
ZOOKEEPER-2757 - Incorrect path crashes zkCli
ZOOKEEPER-2758 - Typo: transasction --> transaction
ZOOKEEPER-2775 - ZK Client not able to connect with Xid out of order error
ZOOKEEPER-2777 - There is a typo in zk.py which prevents from using/compiling it.
ZOOKEEPER-2783 - follower disconnects and cannot reconnect
ZOOKEEPER-2785 - Server inappropriately throttles connections under load before SASL completes
ZOOKEEPER-2786 - Flaky test: org.apache.zookeeper.test.ClientTest.testNonExistingOpCode
ZOOKEEPER-2797 - Invalid TTL from misbehaving client nukes zookeeper
ZOOKEEPER-2798 - Fix flaky test: org.apache.zookeeper.test.ReadOnlyModeTest.testConnectionEvents
ZOOKEEPER-2806 - Flaky test: org.apache.zookeeper.server.quorum.FLEBackwardElectionRoundTest.testBackwardElectionRound
ZOOKEEPER-2808 - ACL with index 1 might be removed if it's only being used once
ZOOKEEPER-2818 - Improve the ZooKeeper#setACL java doc
ZOOKEEPER-2819 - Changing membership configuration via rolling restart does not work on 3.5.x.
ZOOKEEPER-2841 - ZooKeeper public include files leak porting changes
ZOOKEEPER-2845 - Data inconsistency issue due to retain database in leader election
ZOOKEEPER-2852 - Snapshot size factor is not read from system property
ZOOKEEPER-2853 - The lastZxidSeen in FileTxnLog.java is never being assigned
ZOOKEEPER-2859 - CMake build doesn't support OS X
ZOOKEEPER-2861 - Main-Class JAR manifest attribute is incorrect
ZOOKEEPER-2862 - Incorrect javadoc syntax for web links in StaticHostProvider.java
ZOOKEEPER-2874 - Windows Debug builds don't link with /MTd
ZOOKEEPER-2890 - Local automatic variable is left uninitialized and then freed.
ZOOKEEPER-2893 - very poor choice of logging if client fails to connect to server
ZOOKEEPER-2901 - Session ID that is negative causes mis-calculation of Ephemeral Type
ZOOKEEPER-2905 - Don't include config.h in zookeeper.h
ZOOKEEPER-2906 - The OWASP dependency check jar should not be included in the default classpath
ZOOKEEPER-2908 - quorum.auth.MiniKdcTest.testKerberosLogin failing with NPE on java 9
ZOOKEEPER-2909 - Create ant task to generate ivy dependency reports
ZOOKEEPER-2914 - compiler warning using java 9
ZOOKEEPER-2923 - The comment of the variable matchSyncs in class CommitProcessor has a mistake.
ZOOKEEPER-2924 - Flaky Test: org.apache.zookeeper.test.LoadFromLogTest.testRestoreWithTransactionErrors
ZOOKEEPER-2931 - WriteLock recipe: incorrect znode ordering when the sessionId is part of the znode name
ZOOKEEPER-2934 - c versions of election and queue recipes do not compile
ZOOKEEPER-2936 - Duplicate Keys in log4j.properties config files
ZOOKEEPER-2944 - Specify correct overflow value
ZOOKEEPER-2948 - Failing c unit tests on apache jenkins
ZOOKEEPER-2949 - SSL ServerName not set when using hostname, some proxies may failed to proxy the request.
ZOOKEEPER-2951 - zkServer.cmd does not start when JAVA_HOME ends with a \
ZOOKEEPER-2953 - Flaky Test: testNoLogBeforeLeaderEstablishment
ZOOKEEPER-2959 - ignore accepted epoch and LEADERINFO ack from observers when a newly elected leader computes new epoch
ZOOKEEPER-2961 - Fix testElectionFraud Flakyness
ZOOKEEPER-2964 - "Conf" command returns dataDir and dataLogDir opposingly
ZOOKEEPER-2978 - fix potential null pointer exception when deleting node
ZOOKEEPER-2982 - Re-try DNS hostname -> IP resolution
ZOOKEEPER-2988 - NPE triggered if server receives a vote for a server id not in their voting view
ZOOKEEPER-2992 - The eclipse build target fails due to protocol redirection: http->https
ZOOKEEPER-2997 - CMake should not force static CRT linking
ZOOKEEPER-3001 - Incorrect log message when try to delete container node
ZOOKEEPER-3006 - Potential NPE in ZKDatabase#calculateTxnLogSizeLimit
ZOOKEEPER-3007 - Potential NPE in ReferenceCountedACLCache#deserialize
ZOOKEEPER-3025 - cmake windows build is broken on jenkins
ZOOKEEPER-3027 - Accidently removed public API of FileTxnLog.setPreallocSize()
ZOOKEEPER-3038 - Cleanup some nitpicks in TTL implementation
ZOOKEEPER-3039 - TxnLogToolkit uses Scanner badly

New Feature

ZOOKEEPER-1703 - Please add instructions for running the tutorial
ZOOKEEPER-2875 - Add ant task for running OWASP dependency report
ZOOKEEPER-2994 - Tool required to recover log and snapshot entries with CRC errors

Improvement

ZOOKEEPER-1748 - TCP keepalive for leader election connections
ZOOKEEPER-2359 - ZooKeeper client has unnecessary logs for watcher removal errors
ZOOKEEPER-2638 - ZooKeeper should log which serverCnxnFactory is used during startup
ZOOKEEPER-2662 - Export a metric for txn log sync times
ZOOKEEPER-2697 - Handle graceful stop of ZookKeeper client
ZOOKEEPER-2744 - Typos in the comments of ZooKeeper class
ZOOKEEPER-2767 - Correct the exception messages in X509Util if truststore location or password is not configured
ZOOKEEPER-2788 - The define of MAX_CONNECTION_ATTEMPTS in QuorumCnxManager.java seems useless, should it be removed?
ZOOKEEPER-2815 - 1. Using try clause to close resource; 2. Others code refactoring for PERSISTENCE module
ZOOKEEPER-2816 - Code refactoring for ZK_SERVER module
ZOOKEEPER-2824 - FileChannel#size info should be added to FileTxnLog#commit to solve the confuse that reason is too large log or too busy disk I/O
ZOOKEEPER-2829 - Interface usability / compatibility improvements through Java annotation.
ZOOKEEPER-2856 - ZooKeeperSaslClient#respondToServer should log exception message of SaslException
ZOOKEEPER-2864 - Add script to run a java api compatibility tool
ZOOKEEPER-2865 - Reconfig Causes Inconsistent Configuration file among the nodes
ZOOKEEPER-2870 - Improve the efficiency of AtomicFileOutputStream
ZOOKEEPER-2880 - Rename README.txt to README.md
ZOOKEEPER-2887 - define dependency versions in build.xml to be easily overridden in build.properties
ZOOKEEPER-2896 - Remove unused imports from org.apache.zookeeper.test.CreateTest.java
ZOOKEEPER-2904 - Remove unused imports from org.apache.zookeeper.server.quorum.WatchLeakTest
ZOOKEEPER-2915 - Use "strict" conflict management in ivy
ZOOKEEPER-2950 - Add keys for the Zxid from the stat command to check_zookeeper.py
ZOOKEEPER-2952 - Upgrade third party libraries to address vulnerabilities
ZOOKEEPER-2967 - Add check to validate dataDir and dataLogDir parameters at startup
ZOOKEEPER-2971 - Create release notes for 3.5.4
ZOOKEEPER-2999 - CMake build should use target-level commands
ZOOKEEPER-3012 - Fix unit test: testDataDirAndDataLogDir should not use hardcode test folders

Test

ZOOKEEPER-2415 - SessionTest is using Thread deprecated API.
ZOOKEEPER-2577 - Flaky Test: org.apache.zookeeper.server.quorum.ReconfigDuringLeaderSyncTest.testDuringLeaderSync
ZOOKEEPER-2742 - Few test cases of org.apache.zookeeper.ZooKeeperTest fails in Windows
ZOOKEEPER-2746 - Leader hand-off during dynamic reconfig is best effort, while test always expects it
ZOOKEEPER-2796 - Test org.apache.zookeeper.ZooKeeperTest.testCreateNodeWithoutData is broken by ZOOKEEPER-2757

Wish

ZOOKEEPER-2795 - Change log level for "ZKShutdownHandler is not registered" error message

Task

ZOOKEEPER-2713 - Create CVE text for ZOOKEEPER-2693 "DOS attack on wchp/wchc four letter words (4lw)"
ZOOKEEPER-3002 - Upgrade branches 3.5 and trunk to Java 1.8
ZOOKEEPER-3017 - Link libm in CMake on FreeBSD

Release Notes - ZooKeeper - Version 3.5.3

Sub-task

ZOOKEEPER-2080 - Fix deadlock in dynamic reconfiguration
ZOOKEEPER-2152 - Intermittent failure in TestReconfig.cc
ZOOKEEPER-2692 - Fix race condition in testWatchAutoResetWithPending

Bug

ZOOKEEPER-1256 - ClientPortBindTest is failing on Mac OS X
ZOOKEEPER-1806 - testCurrentServersAreObserversInNextConfig failing frequently on trunk with non-jdk6
ZOOKEEPER-1898 - ZooKeeper Java cli shell always returns "0" as exit code
ZOOKEEPER-1927 - zkServer.sh fails to read dataDir (and others) from zoo.cfg on Solaris 10 (grep issue, manifests as FAILED TO WRITE PID).
ZOOKEEPER-2014 - Only admin should be allowed to reconfig a cluster
ZOOKEEPER-2074 - Incorrect exit codes for "./zkCli.sh cmd arg"
ZOOKEEPER-2172 - Cluster crashes when reconfig a new node as a participant
ZOOKEEPER-2247 - Zookeeper service becomes unavailable when leader fails to write transaction log
ZOOKEEPER-2383 - Startup race in ZooKeeperServer
ZOOKEEPER-2442 - Socket leak in QuorumCnxManager connectOne
ZOOKEEPER-2460 - Remove javacc dependency from public Maven pom
ZOOKEEPER-2463 - TestMulti is broken in the C client
ZOOKEEPER-2464 - NullPointerException on ContainerManager
ZOOKEEPER-2465 - Documentation copyright notice is out of date.
ZOOKEEPER-2467 - NullPointerException when redo Command is passed negative value
ZOOKEEPER-2470 - ServerConfig#parse(String[]) ignores tickTime
ZOOKEEPER-2477 - documentation should refer to Java cli shell and not C cli shell
ZOOKEEPER-2498 - Potential resource leak in C client when processing unexpected / out of order response
ZOOKEEPER-2500 - Fix compilation warnings for CliException classes
ZOOKEEPER-2517 - jute.maxbuffer is ignored
ZOOKEEPER-2536 - When provide path for "dataDir" with trailing space, it is taking correct path (by trucating space) for snapshot but creating temporary file with some junk folder name for zookeeper_server.pid
ZOOKEEPER-2537 - When provide path for "dataDir" with heading space, it is taking correct path (by trucating space) for snapshot but zookeeper_server.pid is getting created in root (/) folder
ZOOKEEPER-2539 - Throwing nullpointerException when run the command "config -c" when client port is mentioned as separate and not like new style
ZOOKEEPER-2548 - zooInspector does not start on Windows
ZOOKEEPER-2558 - Potential memory leak in recordio.c
ZOOKEEPER-2573 - Modify Info.REVISION to adapt git repo
ZOOKEEPER-2574 - PurgeTxnLog can inadvertently delete required txn log files
ZOOKEEPER-2579 - ZooKeeper server should verify that dataDir and snapDir are writeable before starting
ZOOKEEPER-2606 - SaslServerCallbackHandler#handleAuthorizeCallback() should log the exception
ZOOKEEPER-2611 - zoo_remove_watchers - can remove the wrong watch
ZOOKEEPER-2617 - correct a few spelling typos
ZOOKEEPER-2622 - ZooTrace.logQuorumPacket does nothing
ZOOKEEPER-2627 - Remove ZRWSERVERFOUND from C client and replace handle_error with something more semantically explicit for r/w server reconnect.
ZOOKEEPER-2628 - Investigate and fix findbug warnings
ZOOKEEPER-2633 - Build failure in contrib/zkfuse with gcc 6.x
ZOOKEEPER-2635 - Regenerate documentation
ZOOKEEPER-2636 - Fix C build break.
ZOOKEEPER-2642 - ZooKeeper reconfig API backward compatibility fix
ZOOKEEPER-2647 - Fix TestReconfigServer.cc
ZOOKEEPER-2651 - Missing src/pom.template in release
ZOOKEEPER-2678 - Large databases take a long time to regain a quorum
ZOOKEEPER-2680 - Correct DataNode.getChildren() inconsistent behaviour.
ZOOKEEPER-2683 - RaceConditionTest is flaky
ZOOKEEPER-2687 - Deadlock while shutting down the Leader server.
ZOOKEEPER-2693 - DOS attack on wchp/wchc four letter words (4lw)
ZOOKEEPER-2726 - Patch for ZOOKEEPER-2693 introduces potential race condition
ZOOKEEPER-2737 - NettyServerCnxFactory leaks connection if exception happens while writing to a channel.

Improvement

ZOOKEEPER-2479 - Add 'electionTimeTaken' value in LeaderMXBean and FollowerMXBean
ZOOKEEPER-2489 - Upgrade Jetty dependency to a recent stable release version.
ZOOKEEPER-2505 - Use shared library instead of static library in C client unit test
ZOOKEEPER-2507 - C unit test improvement: line break between 'ZooKeeper server started' and 'Running'
ZOOKEEPER-2511 - Implement AutoCloseable in ZooKeeper.java
ZOOKEEPER-2557 - Update gitignore to account for other file extensions
ZOOKEEPER-2594 - Use TLS for downloading artifacts during build
ZOOKEEPER-2620 - Add comments to testReadOnlySnapshotDir and testReadOnlyTxnLogDir indicating that the tests will fail when run as root
ZOOKEEPER-2655 - Improve NIOServerCnxn#isZKServerRunning to reflect the semantics correctly
ZOOKEEPER-2672 - Remove CHANGE.txt
ZOOKEEPER-2682 - Make it optional to fail build on test failure
ZOOKEEPER-2724 - Skip cert files for releaseaudit target.

New Feature

ZOOKEEPER-1962 - Add a CLI command to recursively list a znode and children
ZOOKEEPER-2719 - Port ZOOKEEPER-2169 to 3.5 branch

Task

ZOOKEEPER-2658 - Trunk / branch-3.5 build broken.
ZOOKEEPER-2709 - Clarify documentation around "auth" ACL scheme
ZOOKEEPER-2734 - 3.5.3 should be a beta release instead of alpha release.

Test

ZOOKEEPER-2482 - Flaky Test: org.apache.zookeeper.test.ClientPortBindTest.testBindByAddress
ZOOKEEPER-2483 - Flaky Test: org.apache.zookeeper.test.LETest.testLE
ZOOKEEPER-2484 - Flaky Test: org.apache.zookeeper.test.LoadFromLogTest.testLoadFailure
ZOOKEEPER-2508 - Many ZooKeeper tests are flaky because they proceed with zk operation without connecting to ZooKeeper server.
ZOOKEEPER-2656 - Fix ServerConfigTest#testValidArguments test case failures
ZOOKEEPER-2664 - ClientPortBindTest#testBindByAddress may fail due to "No such device" exception
ZOOKEEPER-2665 - Port QA github pull request build to branch 3.4 and 3.5
ZOOKEEPER-2716 - Flaky Test: org.apache.zookeeper.server.SessionTrackerTest.testAddSessionAfterSessionExpiry
ZOOKEEPER-2718 - org.apache.zookeeper.server.quorum.StandaloneDisabledTest fails intermittently

Release Notes - ZooKeeper - Version 3.5.2

Sub-task

ZOOKEEPER-1872 - QuorumPeer is not shutdown in few cases
ZOOKEEPER-2094 - SSL feature on Netty
ZOOKEEPER-2137 - Make testPortChange() less flaky
ZOOKEEPER-2396 - Login object in ZooKeeperSaslClient is static

Bug

ZOOKEEPER-412 - checkstyle target fails trunk build
ZOOKEEPER-706 - large numbers of watches can cause session re-establishment to fail
ZOOKEEPER-1029 - C client bug in zookeeper_init (if bad hostname is given)
ZOOKEEPER-1077 - C client lib doesn't build on Solaris
ZOOKEEPER-1371 - Remove dependency on log4j in the source code.
ZOOKEEPER-1460 - IPv6 literal address not supported for quorum members
ZOOKEEPER-1676 - C client zookeeper_interest returning ZOK on Connection Loss
ZOOKEEPER-1803 - Add description for pzxid in programmer's guide.
ZOOKEEPER-1853 - zkCli.sh can't issue a CREATE command containing spaces in the data
ZOOKEEPER-1927 - zkServer.sh fails to read dataDir (and others) from zoo.cfg on Solaris 10 (grep issue, manifests as FAILED TO WRITE PID).
ZOOKEEPER-1929 - std::length_error on update children
ZOOKEEPER-1991 - zkServer.sh returns with a zero exit status when a ZooKeeper process is already running
ZOOKEEPER-2133 - zkperl: Segmentation fault if getting a node with null value
ZOOKEEPER-2141 - ACL cache in DataTree never removes entries
ZOOKEEPER-2142 - JMX ObjectName is incorrect for observers
ZOOKEEPER-2156 - If JAVA_HOME is not set zk startup and fetching status command execution result misleads user.
ZOOKEEPER-2174 - JUnit4ZKTestRunner logs test failure for all exceptions even if the test method is annotated with an expected exception.
ZOOKEEPER-2195 - fsync.warningthresholdms in zoo.cfg not working
ZOOKEEPER-2201 - Network issues can cause cluster to hang due to near-deadlock
ZOOKEEPER-2211 - PurgeTxnLog does not correctly purge when snapshots and logs are at different locations
ZOOKEEPER-2227 - stmk four-letter word fails execution at server while reading trace mask argument.
ZOOKEEPER-2229 - Several four-letter words are undocumented.
ZOOKEEPER-2235 - License update
ZOOKEEPER-2239 - JMX State from LocalPeerBean incorrect
ZOOKEEPER-2243 - Supported platforms is completely out of date
ZOOKEEPER-2244 - On Windows zookeeper fails to restart
ZOOKEEPER-2245 - SimpleSysTest test cases fails
ZOOKEEPER-2252 - Random test case failure in org.apache.zookeeper.test.StaticHostProviderTest
ZOOKEEPER-2256 - Zookeeper is not using specified JMX port in zkEnv.sh
ZOOKEEPER-2264 - Wrong error message when secureClientPortAddress is configured but secureClientPort is not configured
ZOOKEEPER-2268 - Zookeeper doc creation fails on windows
ZOOKEEPER-2269 - NullPointerException in RemotePeerBean
ZOOKEEPER-2279 - QuorumPeer loadDataBase() error message is incorrect
ZOOKEEPER-2281 - ZK Server startup fails if there are spaces in the JAVA_HOME path
ZOOKEEPER-2283 - traceFile property is not used in the ZooKeeper, it should be removed from documentation
ZOOKEEPER-2294 - Ant target generate-clover-reports is broken
ZOOKEEPER-2295 - TGT refresh time logic is wrong
ZOOKEEPER-2297 - NPE is thrown while creating "key manager" and "trust manager"
ZOOKEEPER-2299 - NullPointerException in LocalPeerBean for ClientAddress
ZOOKEEPER-2301 - QuorumPeer does not listen on passed client IP in the constructor
ZOOKEEPER-2302 - Some test cases are not running because wrongly named
ZOOKEEPER-2304 - JMX ClientPort from ZooKeeperServerBean incorrect
ZOOKEEPER-2311 - assert in setup_random
ZOOKEEPER-2329 - Clear javac and javadoc warning from zookeeper
ZOOKEEPER-2330 - ZooKeeper close API does not close Login thread.
ZOOKEEPER-2337 - Fake "invalid" hostnames used in tests are sometimes valid
ZOOKEEPER-2340 - JMX is disabled even if JMXDISABLE is false
ZOOKEEPER-2360 - Update commons collections version used by tests/releaseaudit
ZOOKEEPER-2364 - "ant docs" fails on branch-3.5 due to missing releasenotes.xml.
ZOOKEEPER-2366 - Reconfiguration of client port causes a socket leak
ZOOKEEPER-2375 - Prevent multiple initialization of login object in each ZooKeeperSaslClient instance
ZOOKEEPER-2379 - recent commit broke findbugs qabot check
ZOOKEEPER-2380 - Deadlock between leader shutdown and forwarding ACK to the leader
ZOOKEEPER-2385 - Zookeeper trunk build is failing on windows
ZOOKEEPER-2388 - Unit tests failing on Solaris
ZOOKEEPER-2393 - Revert run-time dependency on log4j and slf4j-log4j12
ZOOKEEPER-2405 - getTGT() in Login.java mishandles confidential information
ZOOKEEPER-2413 - ContainerManager doesn't close the Timer it creates when stop() is called
ZOOKEEPER-2450 - Upgrade Netty version due to security vulnerability (CVE-2014-3488)
ZOOKEEPER-2457 - Remove license file for servlet-api dependency
ZOOKEEPER-2458 - Remove license file for servlet-api dependency
ZOOKEEPER-2459 - Update NOTICE file with Netty notice

Improvement

ZOOKEEPER-2040 - Server to log underlying cause of SASL connection problems
ZOOKEEPER-2087 - Few UX improvements in ZooInspector
ZOOKEEPER-2139 - Support multiple ZooKeeper client, with different configurations, in a single JVM
ZOOKEEPER-2191 - Continue supporting prior Ant versions that don't implement the threads attribute for the JUnit task.
ZOOKEEPER-2240 - Make the three-node minimum more explicit in documentation and on website
ZOOKEEPER-2300 - Expose SecureClientPort and SecureClientAddress JMX properties
ZOOKEEPER-2306 - Remove file delete duplicate code from test code
ZOOKEEPER-2315 - Change client connect zk service timeout log level from Info to Warn level
ZOOKEEPER-2326 - Include connected server address:port in log
ZOOKEEPER-2373 - Licenses section missing from pom file
ZOOKEEPER-2378 - upgrade ivy to recent version
ZOOKEEPER-2392 - Update netty to 3.7.1.Final
ZOOKEEPER-2402 - Document client side properties
ZOOKEEPER-2410 - add time unit to 'ELECTION TOOK' log.info message
ZOOKEEPER-2433 - ZooKeeperSaslServer: allow user principals in subject

Task

ZOOKEEPER-1604 - remove rpm/deb/... packaging

Release Notes - ZooKeeper - Version 3.5.1

Sub-task

ZOOKEEPER-1626 - Zookeeper C client should be tolerant of clock adjustments
ZOOKEEPER-1660 - Add documentation for dynamic reconfiguration
ZOOKEEPER-2047 - testTruncationNullLog fails on windows
ZOOKEEPER-2069 - Netty Support for ClientCnxnSocket
ZOOKEEPER-2119 - Netty client docs
ZOOKEEPER-2123 - Provide implementation of X509 AuthenticationProvider
ZOOKEEPER-2125 - SSL on Netty client-server communication
ZOOKEEPER-2134 - AsyncHammerTest.testHammer fails intermittently
ZOOKEEPER-2153 - X509 Authentication Documentation

Bug

ZOOKEEPER-1366 - Zookeeper should be tolerant of clock adjustments
ZOOKEEPER-1784 - Logic to process INFORMANDACTIVATE packets in syncWithLeader seems bogus
ZOOKEEPER-1893 - automake: use serial-tests option
ZOOKEEPER-1917 - Apache Zookeeper logs cleartext admin passwords
ZOOKEEPER-1949 - recipes jar not included in the distribution package
ZOOKEEPER-1952 - Default log directory and file name can be changed
ZOOKEEPER-1987 - unable to restart 3 node cluster
ZOOKEEPER-2006 - Standalone mode won't take client port from dynamic config
ZOOKEEPER-2008 - System test fails due to missing leader election port
ZOOKEEPER-2013 - typos in zookeeperProgrammers
ZOOKEEPER-2026 - Startup order in ServerCnxnFactory-ies is wrong
ZOOKEEPER-2029 - Leader.LearnerCnxAcceptor should handle exceptions in run()
ZOOKEEPER-2030 - dynamicConfigFile should have an absolute path, not a relative path, to the dynamic configuration file
ZOOKEEPER-2039 - Jute compareBytes incorrect comparison index
ZOOKEEPER-2049 - Yosemite build failure: htonll conflict
ZOOKEEPER-2052 - Unable to delete a node when the node has no children
ZOOKEEPER-2056 - Zookeeper 3.4.x and 3.5.0-alpha is not OSGi compliant
ZOOKEEPER-2060 - Trace bug in NettyServerCnxnFactory
ZOOKEEPER-2062 - RemoveWatchesTest takes forever to run
ZOOKEEPER-2064 - Prevent resource leak in various classes
ZOOKEEPER-2072 - Netty Server Should Configure Child Channel Pipeline By Specifying ChannelPipelineFactory
ZOOKEEPER-2073 - Memory leak on zookeeper_close
ZOOKEEPER-2096 - C client builds with incorrect error codes in VisualStudio 2010+
ZOOKEEPER-2109 - Typo in src/c/src/load_gen.c
ZOOKEEPER-2111 - Not isAlive states should be synchronized in ClientCnxn
ZOOKEEPER-2114 - jute generated allocate_* functions are not externally visible
ZOOKEEPER-2124 - Allow Zookeeper version string to have underscore '_'
ZOOKEEPER-2146 - BinaryInputArchive readString should check length before allocating memory
ZOOKEEPER-2157 - Upgrade option should be removed from zkServer.sh usage
ZOOKEEPER-2171 - avoid reverse lookups in QuorumCnxManager
ZOOKEEPER-2173 - ZK startup failure should be handled with proper error message
ZOOKEEPER-2178 - Native client fails compilation on Windows.
ZOOKEEPER-2182 - Several test suites are not running during pre-commit, because their names do not end with "Test".
ZOOKEEPER-2186 - QuorumCnxManager#receiveConnection may crash with random input
ZOOKEEPER-2187 - remove duplicated code between CreateRequest{,2}
ZOOKEEPER-2190 - In StandaloneDisabledTest, testReconfig() shouldn't take leaving servers as joining servers
ZOOKEEPER-2193 - reconfig command completes even if parameter is wrong obviously
ZOOKEEPER-2197 - non-ascii character in FinalRequestProcessor.java
ZOOKEEPER-2198 - Set default test.junit.threads to 1.
ZOOKEEPER-2199 - Don't include unistd.h in windows
ZOOKEEPER-2210 - clock_gettime is not available in os x
ZOOKEEPER-2212 - distributed race condition related to QV version
ZOOKEEPER-2213 - Empty path in Set crashes server and prevents restart
ZOOKEEPER-2221 - Zookeeper JettyAdminServer server should start on configured IP.
ZOOKEEPER-2224 - Four letter command hangs when network is slow
ZOOKEEPER-2235 - License update

Improvement

ZOOKEEPER-1423 - 4lw and jmx should expose the size of the datadir/datalogdir
ZOOKEEPER-1506 - Re-try DNS hostname -> IP resolution if node connection fails
ZOOKEEPER-1907 - Improve Thread handling
ZOOKEEPER-1948 - Enable JMX remote monitoring
ZOOKEEPER-1963 - Make JDK 7 the minimum requirement for Zookeeper
ZOOKEEPER-1994 - Backup config files.
ZOOKEEPER-2066 - Updates to README.txt
ZOOKEEPER-2079 - Stop daemon with "kill" rather than "kill -9"
ZOOKEEPER-2098 - QuorumCnxManager: use BufferedOutputStream for initial msg
ZOOKEEPER-2107 - zookeeper client should support custom HostProviders
ZOOKEEPER-2110 - Typo fixes in the ZK documentation
ZOOKEEPER-2126 - Improve exit log messsage of EventThread and SendThread by adding SessionId
ZOOKEEPER-2140 - NettyServerCnxn and NIOServerCnxn code should be improved
ZOOKEEPER-2149 - Logging of client address when socket connection established
ZOOKEEPER-2176 - Unclear error message should be info not error
ZOOKEEPER-2183 - Concurrent Testing Processes and Port Assignments
ZOOKEEPER-2185 - Run server with -XX:+HeapDumpOnOutOfMemoryError and -XX:OnOutOfMemoryError='kill %p'.
ZOOKEEPER-2194 - Let DataNode.getChildren() return an unmodifiable view of its children set
ZOOKEEPER-2205 - Log type of unexpected quorum packet in learner handler loop
ZOOKEEPER-2206 - Add missing packet types to LearnerHandler.packetToString()
ZOOKEEPER-2207 - Enhance error logs with LearnerHandler.packetToString()
ZOOKEEPER-2208 - Log type of unexpected quorum packet in observer loop
ZOOKEEPER-2214 - Findbugs warning: LearnerHandler.packetToString Dead store to local variable
ZOOKEEPER-2223 - support method-level JUnit testcase

New Feature

ZOOKEEPER-2163 - Introduce new ZNode type: container

Test

ZOOKEEPER-2017 - New tests for reconfig failure cases
ZOOKEEPER-2032 - ReconfigBackupTest didn't clean up resources.
ZOOKEEPER-2204 - LearnerSnapshotThrottlerTest.testHighContentionWithTimeout fails occasionally

Release Notes - ZooKeeper - Version 3.5.0

Sub-task

ZOOKEEPER-442 - need a way to remove watches that are no longer of interest
ZOOKEEPER-762 - Allow dynamic addition/removal of server nodes in the client API
ZOOKEEPER-827 - enable r/o mode in C client library
ZOOKEEPER-837 - cyclic dependency ClientCnxn, ZooKeeper
ZOOKEEPER-878 - finishPacket and conLossPacket should be methods of Packet
ZOOKEEPER-910 - Use SelectionKey.isXYZ() methods instead of complicated binary logic
ZOOKEEPER-932 - Move blocking read/write calls to SendWorker and RecvWorker Threads
ZOOKEEPER-933 - Remove wildcard QuorumPeer.OBSERVER_ID
ZOOKEEPER-934 - Add sanity check for server ID
ZOOKEEPER-1044 - Allow dynamic changes to roles of a peer
ZOOKEEPER-1113 - QuorumMaj counts the number of ACKs but does not check who sent the ACK
ZOOKEEPER-1191 - Synchronization issue - wait not in guarded block
ZOOKEEPER-1200 - Remove obsolete DataTreeBuilder
ZOOKEEPER-1201 - Clean SaslServerCallbackHandler.java
ZOOKEEPER-1213 - ZooKeeper server startup fails if configured only with the 'minSessionTimeout' and not 'maxSessionTimeout'
ZOOKEEPER-1216 - Fix more eclipse compiler warnings, also in Tests
ZOOKEEPER-1221 - Provide accessors for Request.{hdr|txn}
ZOOKEEPER-1227 - Zookeeper logs is showing -1 as min/max session timeout if there is no sessiontimeout value configured
ZOOKEEPER-1235 - store KeeperException messages in the Code enum
ZOOKEEPER-1246 - Dead code in PrepRequestProcessor catch Exception block
ZOOKEEPER-1247 - dead code in PrepRequestProcessor.pRequest multi case
ZOOKEEPER-1248 - multi transaction sets request.exception without reason
ZOOKEEPER-1252 - remove unused method o.a.z.test.AxyncTest.restart()
ZOOKEEPER-1253 - return value of DataTree.createNode is never used
ZOOKEEPER-1259 - central mapping from type to txn record class
ZOOKEEPER-1282 - Learner.java not following Zab 1.0 protocol - setCurrentEpoch should be done upon receipt of NEWLEADER (before acking it) and not upon receipt of UPTODATE
ZOOKEEPER-1291 - AcceptedEpoch not updated at leader before it proposes the epoch to followers
ZOOKEEPER-1347 - Fix the cnxns to use a concurrent data structures
ZOOKEEPER-1411 - Consolidate membership management, distinguish between static and dynamic configuration parameters
ZOOKEEPER-1414 - QuorumPeerMainTest.testQuorum, testBadPackets are failing intermittently
ZOOKEEPER-1459 - Standalone ZooKeeperServer is not closing the transaction log files on shutdown
ZOOKEEPER-1626 - Zookeeper C client should be tolerant of clock adjustments
ZOOKEEPER-1660 - Add documentation for dynamic reconfiguration
ZOOKEEPER-1730 - Make ZooKeeper easier to test - support simulating a session expiration
ZOOKEEPER-1761 - Expose 'check' version api in ZooKeeper client
ZOOKEEPER-1762 - Implement 'check' version cli command
ZOOKEEPER-1830 - Support command line shell for removing watches
ZOOKEEPER-1831 - Document remove watches details to the guide
ZOOKEEPER-1834 - Catch IOException in FileTxnLog
ZOOKEEPER-1837 - Fix JMXEnv checks (potential race conditions)
ZOOKEEPER-1849 - Need to properly tear down tests in various cases
ZOOKEEPER-1852 - ServerCnxnFactory instance is not properly cleanedup
ZOOKEEPER-1854 - ClientBase ZooKeeper server clean-up
ZOOKEEPER-1857 - PrepRequestProcessotTest doesn't shutdown ZooKeeper server
ZOOKEEPER-1858 - JMX checks - potential race conditions while stopping and starting server
ZOOKEEPER-1867 - Bug in ZkDatabaseCorruptionTest
ZOOKEEPER-1872 - QuorumPeer is not shutdown in few cases
ZOOKEEPER-1873 - Unnecessarily InstanceNotFoundException is coming when unregister failed jmxbeans
ZOOKEEPER-1874 - Add proper teardown/cleanups in ReconfigTest to shutdown quorumpeer
ZOOKEEPER-1904 - WatcherTest#testWatchAutoResetWithPending is failing
ZOOKEEPER-1972 - Fix invalid volatile long/int increment (++)
ZOOKEEPER-1975 - Turn off "internationalization warnings" in findbugs exclude file
ZOOKEEPER-1978 - Fix Multithreaded correctness Warnings
ZOOKEEPER-1979 - Fix Performance Warnings found by Findbugs 2.0.3
ZOOKEEPER-1981 - Fix Dodgy Code Warnings identified by findbugs 2.0.3
ZOOKEEPER-1988 - new test patch to verify dynamic reconfig backward compatibility
ZOOKEEPER-1989 - backward compatibility of zoo.cfg
ZOOKEEPER-1993 - Keep the client port upon parsing config
ZOOKEEPER-1995 - Safely remove client port in old config file on reconfig itself

Bug

ZOOKEEPER-10 - Bad error message
ZOOKEEPER-87 - Follower does not shut itself down if its too far behind the leader.
ZOOKEEPER-366 - Session timeout detection can go wrong if the leader system time changes
ZOOKEEPER-445 - Potential bug in leader code
ZOOKEEPER-463 - C++ tests can't be built on Mac OS using XCode command line tools
ZOOKEEPER-492 - the tests should have their own log4j.properties
ZOOKEEPER-513 - C client disconnect with stand-alone server abnormally
ZOOKEEPER-515 - Zookeeper quorum didn't provide service when restart after an "Out of memory" crash
ZOOKEEPER-602 - log all exceptions not caught by ZK threads
ZOOKEEPER-642 - "exceeded deadline by N ms" floods logs
ZOOKEEPER-649 - testObserver timed out once on Hudson
ZOOKEEPER-653 - hudson failure in LETest
ZOOKEEPER-675 - LETest thread fails to join
ZOOKEEPER-697 - TestQuotaQuorum is failing on Hudson
ZOOKEEPER-705 - Fails to Build due to unknown opcode 'lock' in mt_adaptor.c
ZOOKEEPER-706 - large numbers of watches can cause session re-establishment to fail
ZOOKEEPER-714 - snapshotting doesn't handle runtime exceptions (like out of memory) well
ZOOKEEPER-732 - Improper translation of error into Python exception
ZOOKEEPER-752 - address use of "recoverable" vs "revocable" in lock recipes documentation
ZOOKEEPER-770 - Slow add_auth calls with multi-threaded client
ZOOKEEPER-780 - zkCli.sh generates a ArrayIndexOutOfBoundsException
ZOOKEEPER-786 - Exception in ZooKeeper.toString
ZOOKEEPER-832 - Invalid session id causes infinite loop during automatic reconnect
ZOOKEEPER-847 - Missing acl check in zookeeper create
ZOOKEEPER-856 - Connection imbalance leads to overloaded ZK instances
ZOOKEEPER-857 - clarify client vs. server view of session expiration event
ZOOKEEPER-872 - Small fixes to PurgeTxnLog
ZOOKEEPER-876 - Unnecessary snapshot transfers between new leader and followers
ZOOKEEPER-877 - zkpython does not work with python3.1
ZOOKEEPER-885 - Zookeeper drops connections under moderate IO load
ZOOKEEPER-900 - FLE implementation should be improved to use non-blocking sockets
ZOOKEEPER-915 - Errors that happen during sync() processing at the leader do not get propagated back to the client.
ZOOKEEPER-936 - zkpython is leaking ACL_vector
ZOOKEEPER-972 - perl Net::ZooKeeper segfaults when setting a watcher on get_children
ZOOKEEPER-973 - bind() could fail on Leader because it does not setReuseAddress on its ServerSocket
ZOOKEEPER-978 - ZookeeperServer does not close zk database on shutdwon
ZOOKEEPER-982 - zkServer.sh won't start zookeeper on an ubuntu 10.10 system due to a bug in the startup script.
ZOOKEEPER-984 - jenkins failure in testSessionMoved - NPE in quorum
ZOOKEEPER-986 - In QuoromCnxManager we are adding sent messgae to lastMessageSent, but we are never removing that message from it after sending it, so this will lead to sending the same message again in next round
ZOOKEEPER-991 - QuoromPeer.OBSERVER_ID
ZOOKEEPER-1002 - The Barrier sample code should create a EPHEMERAL znode instead of EPHEMERAL_SEQUENTIAL znode
ZOOKEEPER-1005 - Zookeeper servers fail to elect a leader succesfully.
ZOOKEEPER-1023 - zkpython: add_auth can deadlock the interpreter
ZOOKEEPER-1048 - addauth command does not work in cli_mt/cli_st
ZOOKEEPER-1050 - zooinspector shell scripts do not work
ZOOKEEPER-1057 - zookeeper c-client, connection to offline server fails to successfully fallback to second zk host
ZOOKEEPER-1062 - Net-ZooKeeper: Net::ZooKeeper consumes 100% cpu on wait
ZOOKEEPER-1077 - C client lib doesn't build on Solaris
ZOOKEEPER-1089 - zkServer.sh status does not work due to invalid option of nc
ZOOKEEPER-1100 - Killed (or missing) SendThread will cause hanging threads
ZOOKEEPER-1105 - c client zookeeper_close not send CLOSE_OP request to server
ZOOKEEPER-1125 - Intermittent java core test failures
ZOOKEEPER-1159 - ClientCnxn does not propagate session expiration indication
ZOOKEEPER-1163 - Memory leak in zk_hashtable.c:do_insert_watcher_object()
ZOOKEEPER-1167 - C api lacks synchronous version of sync() call.
ZOOKEEPER-1174 - FD leak when network unreachable
ZOOKEEPER-1179 - NettyServerCnxn does not properly close socket on 4 letter word requests
ZOOKEEPER-1181 - Fix problems with Kerberos TGT renewal
ZOOKEEPER-1184 - jute generated files are not being cleaned up via "ant clean"
ZOOKEEPER-1185 - Send AuthFailed event to client if SASL authentication fails
ZOOKEEPER-1189 - For an invalid snapshot file(less than 10bytes size) RandomAccessFile stream is leaking.
ZOOKEEPER-1190 - ant package is not including many of the bin scripts in the package (zkServer.sh for example)
ZOOKEEPER-1192 - Leader.waitForEpochAck() checks waitingForNewEpoch instead of checking electionFinished
ZOOKEEPER-1194 - Two possible race conditions during leader establishment
ZOOKEEPER-1197 - Incorrect socket handling of 4 letter words for NIO
ZOOKEEPER-1203 - Zookeeper systest is missing Junit Classes
ZOOKEEPER-1206 - Sequential node creation does not use always use digits in node name given certain Locales.
ZOOKEEPER-1207 - strange ReadOnlyZooKeeperServer ERROR when starting ensemble
ZOOKEEPER-1208 - Ephemeral node not removed after the client session is long gone
ZOOKEEPER-1209 - LeaderElection recipe doesn't handle the split-brain issue, n/w disconnection can bring both the client nodes to be in ELECTED
ZOOKEEPER-1212 - zkServer.sh stop action is not conformat with LSB para 20.2 Init Script Actions
ZOOKEEPER-1214 - QuorumPeer should unregister only its previsously registered MBeans instead of use MBeanRegistry.unregisterAll() method.
ZOOKEEPER-1220 - ./zkCli.sh 'create' command is throwing ArrayIndexOutOfBoundsException
ZOOKEEPER-1222 - getACL should only call DataTree.copyStat when passed in stat is not null
ZOOKEEPER-1224 - problem across zookeeper clients when reading data written by other clients
ZOOKEEPER-1225 - Successive invocation of LeaderElectionSupport.start() will bring the ELECTED node to READY and cause no one in ELECTED state.
ZOOKEEPER-1236 - Security uses proprietary Sun APIs
ZOOKEEPER-1237 - ERRORs being logged when queued responses are sent after socket has closed.
ZOOKEEPER-1238 - when the linger time was changed for NIO the patch missed Netty
ZOOKEEPER-1241 - Typo in ZooKeeper Recipes and Solutions documentation
ZOOKEEPER-1256 - ClientPortBindTest is failing on Mac OS X
ZOOKEEPER-1262 - Documentation for Lock recipe has major flaw
ZOOKEEPER-1264 - FollowerResyncConcurrencyTest failing intermittently
ZOOKEEPER-1268 - problems with read only mode, intermittent test failures and ERRORs in the log
ZOOKEEPER-1269 - Multi deserialization issues
ZOOKEEPER-1270 - testEarlyLeaderAbandonment failing intermittently, quorum formed, no serving.
ZOOKEEPER-1271 - testEarlyLeaderAbandonment failing on solaris - clients not retrying connection
ZOOKEEPER-1273 - Copy'n'pasted unit test
ZOOKEEPER-1274 - Support child watches to be displayed with 4 letter zookeeper commands (i.e. wchs, wchp and wchc)
ZOOKEEPER-1277 - servers stop serving when lower 32bits of zxid roll over
ZOOKEEPER-1294 - One of the zookeeper server is not accepting any requests
ZOOKEEPER-1300 - Rat complains about incosistent licenses in the src files.
ZOOKEEPER-1303 - Observer LearnerHandlers are not removed from Leader collection.
ZOOKEEPER-1305 - zookeeper.c:prepend_string func can dereference null ptr
ZOOKEEPER-1307 - zkCli.sh is exiting when an Invalid ACL exception is thrown from setACL command through client
ZOOKEEPER-1311 - ZooKeeper test jar is broken
ZOOKEEPER-1315 - zookeeper_init always reports sessionPasswd=<hidden>
ZOOKEEPER-1316 - zookeeper_init leaks memory if chroot is just '/'
ZOOKEEPER-1317 - Possible segfault in zookeeper_init
ZOOKEEPER-1318 - In Python binding, get_children (and get and exists, and probably others) with expired session doesn't raise exception properly
ZOOKEEPER-1319 - Missing data after restarting+expanding a cluster
ZOOKEEPER-1323 - c client doesn't compile on freebsd
ZOOKEEPER-1327 - there are still remnants of hadoop urls
ZOOKEEPER-1330 - Zookeeper server not serving the client request even after completion of Leader election
ZOOKEEPER-1331 - Typo in docs: acheive -> achieve
ZOOKEEPER-1333 - NPE in FileTxnSnapLog when restarting a cluster
ZOOKEEPER-1334 - Zookeeper 3.4.x is not OSGi compliant - MANIFEST.MF is flawed
ZOOKEEPER-1336 - javadoc for multi is confusing, references functionality that doesn't seem to exist
ZOOKEEPER-1338 - class cast exceptions may be thrown by multi ErrorResult class (invalid equals)
ZOOKEEPER-1339 - C clien doesn't build with --enable-debug
ZOOKEEPER-1340 - multi problem - typical user operations are generating ERROR level messages in the server
ZOOKEEPER-1343 - getEpochToPropose should check if lastAcceptedEpoch is greater or equal than epoch
ZOOKEEPER-1344 - ZooKeeper client multi-update command is not considering the Chroot request
ZOOKEEPER-1351 - invalid test verification in MultiTransactionTest
ZOOKEEPER-1352 - server.InvalidSnapshotTest is using connection timeouts that are too short
ZOOKEEPER-1353 - C client test suite fails consistently
ZOOKEEPER-1354 - AuthTest.testBadAuthThenSendOtherCommands fails intermittently
ZOOKEEPER-1357 - Zab1_0Test uses hard-wired port numbers. Specifically, it uses the same port for leader in two different tests. The second test periodically fails complaining that the port is still in use.
ZOOKEEPER-1358 - In StaticHostProviderTest.java, testNextDoesNotSleepForZero tests that hostProvider.next(0) doesn't sleep by checking that the latency of this call is less than 10sec
ZOOKEEPER-1360 - QuorumTest.testNoLogBeforeLeaderEstablishment has several problems
ZOOKEEPER-1361 - Leader.lead iterates over 'learners' set without proper synchronisation
ZOOKEEPER-1366 - Zookeeper should be tolerant of clock adjustments
ZOOKEEPER-1367 - Data inconsistencies and unexpired ephemeral nodes after cluster restart
ZOOKEEPER-1371 - Remove dependency on log4j in the source code.
ZOOKEEPER-1373 - Hardcoded SASL login context name clashes with Hadoop security configuration override
ZOOKEEPER-1374 - C client multi-threaded test suite fails to compile on ARM architectures.
ZOOKEEPER-1379 - 'printwatches, redo, history and connect '. client commands always print usage. This is not necessary
ZOOKEEPER-1380 - zkperl: _zk_release_watch doesn't remove items properly from the watch list
ZOOKEEPER-1382 - Zookeeper server holds onto dead/expired session ids in the watch data structures
ZOOKEEPER-1384 - test-cppunit overrides LD_LIBRARY_PATH and fails if gcc is in non-standard location
ZOOKEEPER-1386 - avoid flaky URL redirection in "ant javadoc" : replace "http://java.sun.com/javase/6/docs/api/" with "http://download.oracle.com/javase/6/docs/api/"
ZOOKEEPER-1387 - Wrong epoch file created
ZOOKEEPER-1388 - Client side 'PathValidation' is missing for the multi-transaction api.
ZOOKEEPER-1391 - zkCli dies on NoAuth
ZOOKEEPER-1395 - node-watcher double-free redux
ZOOKEEPER-1403 - zkCli.sh script quoting issue
ZOOKEEPER-1406 - dpkg init scripts don't restart - missing check_priv_sep_dir
ZOOKEEPER-1412 - java client watches inconsistently triggered on reconnect
ZOOKEEPER-1417 - investigate differences in client last zxid handling btw c and java clients
ZOOKEEPER-1419 - Leader election never settles for a 5-node cluster
ZOOKEEPER-1427 - Writing to local files is done non-atomically
ZOOKEEPER-1431 - zkpython: async calls leak memory
ZOOKEEPER-1437 - Client uses session before SASL authentication complete
ZOOKEEPER-1439 - c sdk: core in log_env for lack of checking the output argument pwp of getpwuid_r
ZOOKEEPER-1440 - Spurious log error messages when QuorumCnxManager is shutting down
ZOOKEEPER-1448 - Node+Quota creation in transaction log can crash leader startup
ZOOKEEPER-1451 - C API improperly logs getaddrinfo failures on Linux when using glibc
ZOOKEEPER-1463 - external inline function is not compatible with C99
ZOOKEEPER-1465 - Cluster availability following new leader election takes a long time with large datasets - is correlated to dataset size
ZOOKEEPER-1466 - QuorumCnxManager.shutdown missing synchronization
ZOOKEEPER-1471 - Jute generates invalid C++ code
ZOOKEEPER-1473 - Committed proposal log retains triple the memory it needs to
ZOOKEEPER-1474 - Cannot build Zookeeper with IBM Java: use of Sun MXBean classes
ZOOKEEPER-1478 - Small bug in QuorumTest.testFollowersStartAfterLeader( )
ZOOKEEPER-1479 - C Client: zoo_add_auth() doesn't wake up the IO thread
ZOOKEEPER-1480 - ClientCnxn(1161) can't get the current zk server add, so that - Session 0x for server null, unexpected error
ZOOKEEPER-1483 - Fix leader election recipe documentation
ZOOKEEPER-1489 - Data loss after truncate on transaction log
ZOOKEEPER-1490 - If the configured log directory does not exist zookeeper will not start. Better to create the directory and start
ZOOKEEPER-1493 - C Client: zookeeper_process doesn't invoke completion callback if zookeeper_close has been called
ZOOKEEPER-1494 - C client: socket leak after receive timeout in zookeeper_interest()
ZOOKEEPER-1495 - ZK client hangs when using a function not available on the server.
ZOOKEEPER-1496 - Ephemeral node not getting cleared even after client has exited
ZOOKEEPER-1499 - clientPort config changes not backwards-compatible
ZOOKEEPER-1501 - Nagios plugin always returns OK when it cannot connect to zookeeper
ZOOKEEPER-1513 - "Unreasonable length" exception while starting a server.
ZOOKEEPER-1514 - FastLeaderElection - leader ignores the round information when joining a quorum
ZOOKEEPER-1519 - Zookeeper Async calls can reference free()'d memory
ZOOKEEPER-1520 - A txn log record with a corrupt sentinel byte looks like EOF
ZOOKEEPER-1521 - LearnerHandler initLimit/syncLimit problems specifying follower socket timeout limits
ZOOKEEPER-1522 - intermittent failures in Zab test due to NPE in recursiveDelete test function
ZOOKEEPER-1531 - Correct the documentation of the args for the JavaExample doc.
ZOOKEEPER-1533 - Correct the documentation of the args for the JavaExample doc.
ZOOKEEPER-1535 - ZK Shell/Cli re-executes last command on exit
ZOOKEEPER-1536 - c client : memory leak in winport.c
ZOOKEEPER-1538 - Improve space handling in zkServer.sh and zkEnv.sh
ZOOKEEPER-1540 - ZOOKEEPER-1411 breaks backwards compatibility
ZOOKEEPER-1549 - Data inconsistency when follower is receiving a DIFF with a dirty snapshot
ZOOKEEPER-1551 - Observers ignore txns that come after snapshot and UPTODATE
ZOOKEEPER-1553 - Findbugs configuration is missing some dependencies
ZOOKEEPER-1554 - Can't use zookeeper client without SASL
ZOOKEEPER-1557 - jenkins jdk7 test failure in testBadSaslAuthNotifiesWatch
ZOOKEEPER-1560 - Zookeeper client hangs on creation of large nodes
ZOOKEEPER-1561 - Zookeeper client may hang on a server restart
ZOOKEEPER-1562 - Memory leaks in zoo_multi API
ZOOKEEPER-1573 - Unable to load database due to missing parent node
ZOOKEEPER-1575 - adding .gitattributes to prevent CRLF and LF mismatches for source and text files
ZOOKEEPER-1576 - Zookeeper cluster - failed to connect to cluster if one of the provided IPs causes java.net.UnknownHostException
ZOOKEEPER-1578 - org.apache.zookeeper.server.quorum.Zab1_0Test failed due to hard code with 33556 port
ZOOKEEPER-1585 - make dist for src/c broken in trunk
ZOOKEEPER-1590 - Patch to add zk.updateServerList(newServerList) broke the build
ZOOKEEPER-1591 - Windows build is broken because inttypes.h doesn't exist
ZOOKEEPER-1596 - Zab1_0Test should ensure that the file is closed
ZOOKEEPER-1597 - Windows build failing
ZOOKEEPER-1602 - a change to QuorumPeerConfig's API broke compatibility with HBase
ZOOKEEPER-1603 - StaticHostProviderTest testUpdateClientMigrateOrNot hangs
ZOOKEEPER-1606 - intermittent failures in ZkDatabaseCorruptionTest on jenkins
ZOOKEEPER-1610 - Some classes are using == or != to compare Long/String objects instead of .equals()
ZOOKEEPER-1620 - NIOServerCnxnFactory (new code introduced in ZK-1504) opens selectors but never closes them
ZOOKEEPER-1621 - ZooKeeper does not recover from crash when disk was full
ZOOKEEPER-1622 - session ids will be negative in the year 2022
ZOOKEEPER-1624 - PrepRequestProcessor abort multi-operation incorrectly
ZOOKEEPER-1625 - zkServer.sh is looking for clientPort in config file, but it may no longer be there with ZK-1411
ZOOKEEPER-1628 - Documented list of allowable characters in ZK doc not in line with code
ZOOKEEPER-1629 - testTransactionLogCorruption occasionally fails
ZOOKEEPER-1632 - fix memory leaks in cli_st
ZOOKEEPER-1641 - Using slope=positive results in a jagged ganglia graph of packets rcvd/sent
ZOOKEEPER-1642 - Leader loading database twice
ZOOKEEPER-1643 - Windows: fetch_and_add not 64bit-compatible, may not be correct
ZOOKEEPER-1645 - ZooKeeper OSGi package imports not complete
ZOOKEEPER-1646 - mt c client tests fail on Ubuntu Raring
ZOOKEEPER-1647 - OSGi package import/export changes not applied to bin-jar
ZOOKEEPER-1648 - Fix WatcherTest in JDK7
ZOOKEEPER-1650 - testServerCnxnExpiry failing consistently on solaris apache jenkins
ZOOKEEPER-1655 - Make jline dependency optional in maven pom
ZOOKEEPER-1657 - Increased CPU usage by unnecessary SASL checks
ZOOKEEPER-1659 - Add JMX support for dynamic reconfiguration
ZOOKEEPER-1662 - Fix to two small bugs in ReconfigTest.testPortChange()
ZOOKEEPER-1663 - scripts don't work when path contains spaces
ZOOKEEPER-1667 - Watch event isn't handled correctly when a client reestablish to a server
ZOOKEEPER-1670 - zookeeper should set a default value for SERVER_JVMFLAGS and CLIENT_JVMFLAGS so that memory usage is controlled
ZOOKEEPER-1672 - zookeeper client does not accept "-members" option in reconfig command
ZOOKEEPER-1673 - Zookeeper don't support cidr in expression in ACL with ip scheme
ZOOKEEPER-1677 - Misuse of INET_ADDRSTRLEN
ZOOKEEPER-1683 - ZooKeeper client NPE when updating server list on disconnected client
ZOOKEEPER-1684 - Failure to update socket addresses on immedate connection
ZOOKEEPER-1694 - ZooKeeper Leader sends a repeated NEWLEADER quorum packet to followers
ZOOKEEPER-1695 - Inconsistent error code and type for new errors introduced by dynamic reconfiguration
ZOOKEEPER-1696 - Fail to run zookeeper client on Weblogic application server
ZOOKEEPER-1697 - large snapshots can cause continuous quorum failure
ZOOKEEPER-1699 - Leader should timeout and give up leadership when losing quorum of last proposed configuration
ZOOKEEPER-1700 - FLETest consistently failing - setLastSeenQuorumVerifier seems to be hanging
ZOOKEEPER-1702 - ZooKeeper client may write operation packets before receiving successful response to connection request, can cause TCP RST
ZOOKEEPER-1706 - Typo in Double Barriers example
ZOOKEEPER-1713 - wrong time calculation in zkfuse.cc
ZOOKEEPER-1714 - perl client segfaults if ZOO_READ_ACL_UNSAFE constant is used
ZOOKEEPER-1719 - zkCli.sh, zkServer.sh and zkEnv.sh regression caused by ZOOKEEPER-1663
ZOOKEEPER-1725 - Zookeeper Dynamic Conf writes out hostnames when IPs are supplied
ZOOKEEPER-1732 - ZooKeeper server unable to join established ensemble
ZOOKEEPER-1733 - FLETest#testLE is flaky on windows boxes
ZOOKEEPER-1742 - "make check" doesn't work on macos
ZOOKEEPER-1744 - clientPortAddress breaks "zkServer.sh status"
ZOOKEEPER-1745 - Wrong Import-Package in the META-INF/MANIFEST.MF of zookeeper 3.4.5 bundle
ZOOKEEPER-1750 - Race condition producing NPE in NIOServerCnxn.toString
ZOOKEEPER-1751 - ClientCnxn#run could miss the second ping or connection get dropped before a ping
ZOOKEEPER-1753 - ClientCnxn is not properly releasing the resources, which are used to ping RwServer
ZOOKEEPER-1754 - Read-only server allows to create znode
ZOOKEEPER-1755 - Concurrent operations of four letter 'dump' ephemeral command and killSession causing NPE
ZOOKEEPER-1756 - zookeeper_interest() in C client can return a timeval of 0
ZOOKEEPER-1765 - Update code conventions link on "How to contribute" page
ZOOKEEPER-1768 - Cluster fails election loop until the device is full
ZOOKEEPER-1769 - ZooInspector can't display node data/metadata/ACLs
ZOOKEEPER-1770 - NullPointerException in SnapshotFormatter
ZOOKEEPER-1773 - incorrect reference to jline version/lib in docs
ZOOKEEPER-1774 - QuorumPeerMainTest fails consistently with "complains about host" assertion failure
ZOOKEEPER-1775 - Ephemeral nodes not present in one of the members of the ensemble
ZOOKEEPER-1776 - Ephemeral nodes not present in one of the members of the ensemble
ZOOKEEPER-1777 - Missing ephemeral nodes in one of the members of the ensemble
ZOOKEEPER-1779 - ReconfigTest littering the source root with test files
ZOOKEEPER-1781 - ZooKeeper Server fails if snapCount is set to 1
ZOOKEEPER-1783 - Distinguish initial configuration from first established configuration
ZOOKEEPER-1784 - Logic to process INFORMANDACTIVATE packets in syncWithLeader seems bogus
ZOOKEEPER-1785 - Small fix in zkServer.sh to support new configuration format
ZOOKEEPER-1786 - ZooKeeper data model documentation is incorrect
ZOOKEEPER-1789 - 3.4.x observer causes NPE on 3.5.0 (trunk) participants
ZOOKEEPER-1790 - Deal with special ObserverId in QuorumCnxManager.receiveConnection
ZOOKEEPER-1791 - ZooKeeper package includes unnecessary jars that are part of the package.
ZOOKEEPER-1795 - unable to build c client on ubuntu
ZOOKEEPER-1797 - PurgeTxnLog may delete data logs during roll
ZOOKEEPER-1798 - Fix race condition in testNormalObserverRun
ZOOKEEPER-1799 - SaslAuthFailDesignatedClientTest.testAuth fails frequently on SUSE
ZOOKEEPER-1800 - jenkins failure in testGetProposalFromTxn
ZOOKEEPER-1801 - TestReconfig failure
ZOOKEEPER-1806 - testCurrentServersAreObserversInNextConfig failing frequently on trunk with non-jdk6
ZOOKEEPER-1807 - Observers spam each other creating connections to the election addr
ZOOKEEPER-1810 - Add version to FLE notifications for trunk
ZOOKEEPER-1811 - The ZooKeeperSaslClient service name principal is hardcoded to "zookeeper"
ZOOKEEPER-1812 - ZooInspector reconnection always fails if first connection fails
ZOOKEEPER-1813 - Zookeeper restart fails due to missing node from snapshot
ZOOKEEPER-1814 - Reduction of waiting time during Fast Leader Election
ZOOKEEPER-1818 - Fix don't care for trunk
ZOOKEEPER-1819 - DeserializationPerfTest calls method with wrong arguments
ZOOKEEPER-1821 - very ugly warning when compiling load_gen.c
ZOOKEEPER-1823 - LogFormatter should support printing transaction data as a string
ZOOKEEPER-1835 - dynamic configuration file renaming fails on Windows
ZOOKEEPER-1836 - addrvec_next() fails to set next parameter if addrvec_hasnext() returns false
ZOOKEEPER-1839 - Deadlock in NettyServerCnxn
ZOOKEEPER-1843 - Oddity in ByteBufferInputStream skip
ZOOKEEPER-1844 - TruncateTest fails on windows
ZOOKEEPER-1847 - Normalize line endings in repository
ZOOKEEPER-1848 - [WINDOWS] Java NIO socket channels does not work with Windows ipv6 on JDK6
ZOOKEEPER-1850 - cppunit test testNonexistingHost in TestZookeeperInit is failing on Unbuntu
ZOOKEEPER-1851 - Follower and Observer Request Processors Do Not Forward create2 Requests
ZOOKEEPER-1855 - calls to zoo_set_server() fail to flush outstanding request queue.
ZOOKEEPER-1860 - Async versions of reconfig don't actually throw KeeperException nor InterruptedException
ZOOKEEPER-1861 - ConcurrentHashMap isn't used properly in QuorumCnxManager
ZOOKEEPER-1862 - ServerCnxnTest.testServerCnxnExpiry is intermittently failing
ZOOKEEPER-1863 - Race condition in commit processor leading to out of order request completion, xid mismatch on client.
ZOOKEEPER-1864 - quorumVerifier is null when creating a QuorumPeerConfig from parsing a Properties object
ZOOKEEPER-1865 - Fix retry logic in Learner.connectToLeader()
ZOOKEEPER-1870 - flakey test in StandaloneDisabledTest.startSingleServerTest
ZOOKEEPER-1875 - NullPointerException in ClientCnxn$EventThread.processEvent
ZOOKEEPER-1877 - Malformed ACL Id can crash server with skipACL=yes
ZOOKEEPER-1878 - Inconsistent behavior in autocreation of dataDir and dataLogDir
ZOOKEEPER-1883 - C client unit test failures
ZOOKEEPER-1888 - ZkCli.cmd commands fail with "'java' is not recognized as an internal or external command"
ZOOKEEPER-1891 - StaticHostProviderTest.testUpdateLoadBalancing times out
ZOOKEEPER-1892 - addrvec_next gets called twice when failing over to the next server
ZOOKEEPER-1894 - ObserverTest.testObserver fails consistently
ZOOKEEPER-1895 - update all notice files, copyright, etc... with the new year - 2014
ZOOKEEPER-1896 - Reconfig error messages when upgrading from 3.4.6 to 3.5.0
ZOOKEEPER-1897 - ZK Shell/Cli not processing commands
ZOOKEEPER-1900 - NullPointerException in truncate
ZOOKEEPER-1901 - [JDK8] Sort children for comparison in AsyncOps tests
ZOOKEEPER-1906 - zkpython: invalid data in GetData for empty node
ZOOKEEPER-1909 - removeWatches doesn't return NOWATCHER when there is no watch set
ZOOKEEPER-1910 - RemoveWatches wrongly removes the watcher if multiple watches exists on a path
ZOOKEEPER-1911 - REST contrib module does not include all required files when packaged
ZOOKEEPER-1913 - Invalid manifest files due to bogus revision property value
ZOOKEEPER-1917 - Apache Zookeeper logs cleartext admin passwords
ZOOKEEPER-1919 - Update the C implementation of removeWatches to have it match ZOOKEEPER-1910
ZOOKEEPER-1923 - A typo in zookeeperStarted document
ZOOKEEPER-1926 - Unit tests should only use build/test/data for data
ZOOKEEPER-1932 - org.apache.zookeeper.test.LETest.testLE fails once in a while
ZOOKEEPER-1933 - Windows release build of zk client cannot connect to zk server
ZOOKEEPER-1939 - ReconfigRecoveryTest.testNextConfigUnreachable is failing
ZOOKEEPER-1945 - deb - zkCli.sh, zkServer.sh and zkEnv.sh regression caused by ZOOKEEPER-1663
ZOOKEEPER-1949 - recipes jar not included in the distribution package
ZOOKEEPER-1950 - configBackwardCompatibilityMode breaks compatibility
ZOOKEEPER-1964 - Fix Flaky Test in ReconfigTest.java
ZOOKEEPER-1966 - VS and line breaks
ZOOKEEPER-1969 - Fix Port Already In Use for JettyAdminServerTest
ZOOKEEPER-1973 - Jetty Server changes broke ibm6 support
ZOOKEEPER-1974 - winvs2008 jenkins job failing with "unresolved external symbol"
ZOOKEEPER-1983 - Append to zookeeper.out (not overwrite) to support logrotation
ZOOKEEPER-1984 - testLeaderTimesoutOnNewQuorum is a flakey test
ZOOKEEPER-1985 - Memory leak in C client
ZOOKEEPER-1987 - unable to restart 3 node cluster
ZOOKEEPER-1990 - suspicious instantiation of java Random instances
ZOOKEEPER-1991 - zkServer.sh returns with a zero exit status when a ZooKeeper process is already running
ZOOKEEPER-1992 - backward compatibility of zoo.cfg
ZOOKEEPER-1998 - C library calls getaddrinfo unconditionally from zookeeper_interest
ZOOKEEPER-1999 - Converting CRLF to LF in DynamicConfigBackwardCompatibilityTest
ZOOKEEPER-2000 - Fix ReconfigTest.testPortChange

Improvement

ZOOKEEPER-74 - Cleaning/restructuring up Zookeeper server code
ZOOKEEPER-107 - Allow dynamic changes to server cluster membership
ZOOKEEPER-216 - Improve logging in C client
ZOOKEEPER-271 - Better command line parsing in ZookeeperMain.
ZOOKEEPER-297 - centralize version numbering in the source/build
ZOOKEEPER-304 - factor out common methods from zookeeper.java
ZOOKEEPER-556 - Startup messages should account for common error of missing leading slash in config files
ZOOKEEPER-657 - Cut down the running time of ZKDatabase corruption.
ZOOKEEPER-715 - add better reporting for initLimit being reached
ZOOKEEPER-716 - dump server memory detail to the log during startup
ZOOKEEPER-721 - Minor cleanup related to the log4j version change from 1.2.15 -> 1.2.16
ZOOKEEPER-748 - zkPython's NodeExistsException should include information about the node that exists
ZOOKEEPER-751 - Recipe heading refers to 'recoverable' but should be 'revocable'
ZOOKEEPER-755 - Improve c client documentation to reflect that zookeeper_init() creates its own copy of list of host.
ZOOKEEPER-756 - some cleanup and improvements for zooinspector
ZOOKEEPER-759 - Stop accepting connections when close to file descriptor limit
ZOOKEEPER-760 - Improved string encoding and decoding performance
ZOOKEEPER-761 - Remove synchronous calls from the single-threaded C clieant API, since they are documented not to work
ZOOKEEPER-767 - Submitting Demo/Recipe Shared / Exclusive Lock Code
ZOOKEEPER-776 - API should sanity check sessionTimeout argument
ZOOKEEPER-802 - Improved LogGraph filters + documentation
ZOOKEEPER-845 - remove duplicate code from netty and nio ServerCnxn classes
ZOOKEEPER-860 - Add alternative search-provider to ZK site
ZOOKEEPER-896 - Improve C client to support dynamic authentication schemes
ZOOKEEPER-906 - Improve C client connection reliability by making it sleep between reconnect attempts as in Java Client
ZOOKEEPER-912 - ZooKeeper client logs trace and debug messages at level INFO
ZOOKEEPER-922 - enable faster timeout of sessions in case of unexpected socket disconnect
ZOOKEEPER-927 - there are currently 24 RAT warnings in the build -- address directly or via exclusions
ZOOKEEPER-935 - Concurrent primitives library - shared lock
ZOOKEEPER-955 - Use Atomic(Integer|Long) for (Z)Xid
ZOOKEEPER-1000 - Provide SSL in zookeeper to be able to run cross colos.
ZOOKEEPER-1019 - zkfuse doesn't list dependency on boost in README
ZOOKEEPER-1032 - speed up recovery from leader failure
ZOOKEEPER-1054 - Drop connections from servers not in the cluster configuration
ZOOKEEPER-1067 - the doxygen doc should be generated as part of the release
ZOOKEEPER-1096 - Leader communication should listen on specified IP, not wildcard address
ZOOKEEPER-1147 - Add support for local sessions
ZOOKEEPER-1162 - consistent handling of jute.maxbuffer when attempting to read large zk "directories"
ZOOKEEPER-1170 - Fix compiler (eclipse) warnings: unused imports, unused variables, missing generics
ZOOKEEPER-1175 - DataNode references parent node for no reason
ZOOKEEPER-1177 - Enabling a large number of watches for a large number of clients
ZOOKEEPER-1178 - Add eclipse target for supporting Apache IvyDE
ZOOKEEPER-1205 - Add a unit test for Kerberos Ticket-Granting Ticket (TGT) renewal
ZOOKEEPER-1219 - LeaderElectionSupport recipe is unnecessarily dispatching the READY_START event even if the ELECTED node stopped/expired simultaneously.
ZOOKEEPER-1229 - C client hashtable_remove redundantly calls hash function
ZOOKEEPER-1232 - remove unused o.a.z.server.util.Profiler
ZOOKEEPER-1239 - add logging/stats to identify fsync stalls
ZOOKEEPER-1261 - Make ZooKeeper code mode Dependency Injection compliant.
ZOOKEEPER-1292 - FLETest is flaky
ZOOKEEPER-1293 - Remove unused readyToStart from Leader.java
ZOOKEEPER-1296 - Add zookeeper-setup-conf.sh script
ZOOKEEPER-1321 - Add number of client connections metric in JMX and srvr
ZOOKEEPER-1322 - Cleanup/fix logging in Quorum code.
ZOOKEEPER-1324 - Remove Duplicate NEWLEADER packets from the Leader to the Follower.
ZOOKEEPER-1335 - Add support for --config to zkEnv.sh to specify a config directory different than what is expected
ZOOKEEPER-1342 - quorum Listener & LearnerCnxAcceptor are missing thread names
ZOOKEEPER-1345 - Add a .gitignore file with general exclusions and Eclipse project files excluded
ZOOKEEPER-1346 - Add Jetty HTTP server support for four letter words.
ZOOKEEPER-1350 - Please make JMX registration optional in LearnerZooKeeperServer
ZOOKEEPER-1377 - add support for dumping a snapshot file content (similar to LogFormatter)
ZOOKEEPER-1389 - it would be nice if start-foreground used exec $JAVA in order to get rid of the intermediate shell process
ZOOKEEPER-1390 - some expensive debug code not protected by a check for debug
ZOOKEEPER-1397 - Remove BookKeeper documentation links
ZOOKEEPER-1400 - Allow logging via callback instead of raw FILE pointer
ZOOKEEPER-1407 - Support GetData and GetChildren in Multi
ZOOKEEPER-1408 - CLI: sort output of ls command
ZOOKEEPER-1409 - CLI: deprecate ls2 command
ZOOKEEPER-1413 - Use on-disk transaction log for learner sync up
ZOOKEEPER-1426 - add version command to the zookeeper server
ZOOKEEPER-1432 - Add javadoc and debug logging for checkACL() method in PrepRequestProcessor
ZOOKEEPER-1433 - improve ZxidRolloverTest (test seems flakey)
ZOOKEEPER-1435 - cap space usage of default log4j rolling policy
ZOOKEEPER-1445 - Add support for binary data for zktreeutil
ZOOKEEPER-1452 - zoo_multi() & zoo_amulti() update operations for zkpython
ZOOKEEPER-1454 - Document how to run autoreconf if cppunit is installed in a non-standard directory
ZOOKEEPER-1469 - Adding Cross-Realm support for secure Zookeeper client authentication
ZOOKEEPER-1481 - allow the C cli to run exists with a watcher
ZOOKEEPER-1497 - Allow server-side SASL login with JAAS configuration to be programmatically set (rather than only by reading JAAS configuration file)
ZOOKEEPER-1502 - Prevent multiple zookeeper servers from using the same data directory
ZOOKEEPER-1503 - remove redundant JAAS configuration code in SaslAuthTest and SaslAuthFailTest
ZOOKEEPER-1504 - Multi-thread NIOServerCnxn
ZOOKEEPER-1505 - Multi-thread CommitProcessor
ZOOKEEPER-1506 - Re-try DNS hostname -> IP resolution if node connection fails
ZOOKEEPER-1510 - Should not log SASL errors for non-secure usage
ZOOKEEPER-1525 - Plumb ZooKeeperServer object into auth plugins
ZOOKEEPER-1532 - Correct the documentation of the args for the JavaExample doc.
ZOOKEEPER-1552 - Enable sync request processor in Observer
ZOOKEEPER-1564 - Allow JUnit test build with IBM Java
ZOOKEEPER-1572 - Add an async interface for multi request
ZOOKEEPER-1574 - mismatched CR/LF endings in text files
ZOOKEEPER-1583 - Document maxClientCnxns in conf/zoo_sample.cfg
ZOOKEEPER-1584 - Adding mvn-install target for deploying the zookeeper artifacts to .m2 repository.
ZOOKEEPER-1598 - Ability to support more digits in the version string
ZOOKEEPER-1601 - document changes for multi-threaded CommitProcessor and NIOServerCnxn
ZOOKEEPER-1615 - minor typos in ZooKeeper Programmer's Guide web page
ZOOKEEPER-1619 - Allow spaces in URL
ZOOKEEPER-1627 - Add org.apache.zookeeper.common to exported packages in OSGi MANIFEST headers
ZOOKEEPER-1634 - A new feature proposal to ZooKeeper: authentication enforcement
ZOOKEEPER-1635 - ZooKeeper C client doesn't compile on 64 bit Windows
ZOOKEEPER-1638 - Redundant zk.getZKDatabase().clear();
ZOOKEEPER-1666 - Avoid Reverse DNS lookup if the hostname in connection string is literal IP address.
ZOOKEEPER-1679 - c client: use -Wdeclaration-after-statement
ZOOKEEPER-1681 - ZooKeeper 3.4.x can optionally use netty for nio but the pom does not declare the dep as optional
ZOOKEEPER-1691 - Add a flag to disable standalone mode
ZOOKEEPER-1701 - When new and old config have the same version, no need to write new config to disk or create new connections
ZOOKEEPER-1715 - Upgrade netty version
ZOOKEEPER-1724 - Support Kerberos authentication for non-SUN JDK
ZOOKEEPER-1728 - Better error message when reconfig invoked in standalone mode
ZOOKEEPER-1746 - AsyncCallback.*Callback don't have any Javadoc
ZOOKEEPER-1748 - TCP keepalive for leader election connections
ZOOKEEPER-1749 - Login outside of Zookeeper client
ZOOKEEPER-1758 - Add documentation for zookeeper.observer.syncEnabled flag
ZOOKEEPER-1759 - Adding ability to allow READ operations for authenticated users, versus keeping ACLs wide open for READ
ZOOKEEPER-1766 - Consistent log severity level guards and statements
ZOOKEEPER-1771 - ZooInspector authentication
ZOOKEEPER-1778 - Use static final Logger objects
ZOOKEEPER-1796 - Move common code from {Follower, Observer}ZooKeeperServer into LearnerZooKeeperServer
ZOOKEEPER-1815 - Tolerate incorrectly set system hostname in tests
ZOOKEEPER-1876 - Add support for installing windows services in .cmd scripts
ZOOKEEPER-1879 - improve the correctness checking of txn log replay
ZOOKEEPER-1881 - Shutdown server immediately upon PrivilegedActionException
ZOOKEEPER-1907 - Improve Thread handling
ZOOKEEPER-1915 - Use $(ProjectDir) macro to specify include directories
ZOOKEEPER-1946 - Server logging should reflect dynamically reconfigured address
ZOOKEEPER-1948 - Enable JMX remote monitoring - Updated patch for review comments
ZOOKEEPER-1953 - Add solution and project files to enable build with current Visual Studio editions (VS 2012/2013) - 32-bit and 64-bit.
ZOOKEEPER-1968 - Make Jetty dependencies optional in ivy.xml
ZOOKEEPER-1970 - Fix Findbugs Warnings
ZOOKEEPER-1982 - Refactor (touch|add)Session in SessionTrackerImpl.java
ZOOKEEPER-1986 - refactor log trace on touchSession
ZOOKEEPER-1994 - Backup config files.

New Feature

ZOOKEEPER-364 - command line interface for zookeeper.
ZOOKEEPER-679 - Offers a node design for interacting with the Java Zookeeper client.
ZOOKEEPER-781 - provide a generalized "connection strategy" for ZooKeeper clients
ZOOKEEPER-823 - update ZooKeeper java client to optionally use Netty for connections
ZOOKEEPER-911 - move operations from methods to individual classes
ZOOKEEPER-920 - L7 (application layer) ping support
ZOOKEEPER-1080 - Provide a Leader Election framework based on Zookeeper recipe
ZOOKEEPER-1098 - Upload native libraries as Maven artifacts
ZOOKEEPER-1161 - Provide an option for disabling auto-creation of the data directory
ZOOKEEPER-1297 - Add stat information to create() call
ZOOKEEPER-1355 - Add zk.updateServerList(newServerList)
ZOOKEEPER-1482 - Batch get to improve perfermance
ZOOKEEPER-1760 - Provide an interface for check version of a node
ZOOKEEPER-1829 - Umbrella jira for removing watches that are no longer of interest
ZOOKEEPER-1887 - C implementation of removeWatches
ZOOKEEPER-1962 - Add a CLI command to recursively list a znode and children

Task

ZOOKEEPER-852 - Check path validation in C client
ZOOKEEPER-899 - Update Netty version in trunk to 3.2.2
ZOOKEEPER-1072 - Support for embedded ZooKeeper
ZOOKEEPER-1149 - users cannot migrate from 3.4->3.3->3.4 server code against a single datadir
ZOOKEEPER-1176 - Remove dead code and basic cleanup in DataTree
ZOOKEEPER-1182 - Make findbugs usable in Eclipse
ZOOKEEPER-1193 - Remove upgrade code
ZOOKEEPER-1263 - fix handling of min/max session timeout value initialization
ZOOKEEPER-1378 - Provide option to turn off sending of diffs
ZOOKEEPER-1430 - add maven deploy support to the build
ZOOKEEPER-1509 - Please update documentation to reflect updated FreeBSD support.
ZOOKEEPER-1604 - remove rpm/deb/... packaging
ZOOKEEPER-1918 - Add 64 bit Windows as a supported development platform
ZOOKEEPER-1938 - bump version in the C library as we prepare for 3.5.0 release

Test

ZOOKEEPER-1328 - Misplaced assertion for the test case 'FLELostMessageTest' and not identifying misfunctions
ZOOKEEPER-1337 - multi's "Transaction" class is missing tests.
ZOOKEEPER-1718 - Support JLine 2

Wish

ZOOKEEPER-964 - How to avoid dead nodes generated? These nodes can't be deleted because there parent don't have delete and setacl permission.
ZOOKEEPER-1326 - The CLI commands "delete" and "rmr" are confusing. Can we have "delete" + "deleteall" instead?
ZOOKEEPER-1727 - Doc request: The right way to expand a cluster