Release Notes - ZooKeeper - Version 3.6.1

Bug

• ZOOKEEPER-2164 - fast leader election keeps failing
• ZOOKEEPER-3706 - ZooKeeper.close() would leak SendThread when the network is broken
• ZOOKEEPER-3737 - Unable to eliminate log4j1 transitive dependency
• ZOOKEEPER-3738 - Avoid use of broken codehaus properties-maven-plugin
• ZOOKEEPER-3739 - Remove use of com.sun.nio.file.SensitivityWatchEventModifier
• ZOOKEEPER-3745 - Update copyright notices from 2019 to 2020
• ZOOKEEPER-3758 - Update from 3.5.7 to 3.6.0 does not work
• ZOOKEEPER-3760 - remove a useless throwing CliException
• ZOOKEEPER-3769 - fast leader election does not end if leader is taken down
• ZOOKEEPER-3776 - Cluster stuck not forming up quorum
• ZOOKEEPER-3778 - Cannot upgrade from 3.5.7 to 3.6.0 due to multiAddress.reachabilityCheckEnabled
• ZOOKEEPER-3780 - restore Version.getRevision() to be backward compatible
• ZOOKEEPER-3793 - Request throttling is broken when RequestThrottler is disabled or configured incorrectly.
• ZOOKEEPER-3726 - invalid ipv6 address comparison in C client
• ZOOKEEPER-3797 - Conflict between fatjar and full-build Maven profiles in branch-3.6
• ZOOKEEPER-3802 - Fix rat checks in full-build and fatjar

New Feature

• ZOOKEEPER-3689 - zkCli/ZooKeeperMain relies on system properties for TLS config
• ZOOKEEPER-3712 - Add setKeepAlive support for NIOServerCnxn

Improvement

• ZOOKEEPER-3685 - Use JDK Arrays Equals for Jute
• ZOOKEEPER-3686 - Use JDK Arrays hashCode for Jute
• ZOOKEEPER-3708 - Move Logging Code into Logging Guard in Learner
• ZOOKEEPER-3741 - Fix ZooKeeper 3.5 C client build on Fedora8
• ZOOKEEPER-3755 - Use maven to create fatjar
• ZOOKEEPER-3756 - Members failing to rejoin quorum
• ZOOKEEPER-3785 - Make sources buildable with JDK14

Wish

• ZOOKEEPER-3763 - Restore ZKUtil.deleteRecursive in order to help compatibility of applications with 3.5 and 3.6

Task

• ZOOKEEPER-3669 - Use switch Statement in ClientCnxn SendThread
• ZOOKEEPER-3677 - owasp checker failing for - CVE-2019-17571 Apache Log4j 1.2 deserialization of untrusted data in SocketServer
• ZOOKEEPER-3751 - upgrade jackson-databind to 2.10 from 2.9
• ZOOKEEPER-3794 - upgrade netty to address CVE-2020-11612