org.apache.zookeeper.server.quorum

Class LeaderZooKeeperServer

java.lang.Object

org.apache.zookeeper.server.ZooKeeperServer

org.apache.zookeeper.server.quorum.QuorumZooKeeperServer

org.apache.zookeeper.server.quorum.LeaderZooKeeperServer

All Implemented Interfaces:

ServerStats.Provider, SessionTracker.SessionExpirer

public class LeaderZooKeeperServer
extends QuorumZooKeeperServer

Just like the standard ZooKeeperServer. We just replace the request processors: PrepRequestProcessor -> ProposalRequestProcessor -> CommitProcessor -> Leader.ToBeAppliedRequestProcessor -> FinalRequestProcessor

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.zookeeper.server.ZooKeeperServer

ZooKeeperServer.MissingSessionException, ZooKeeperServer.State

Field Summary

Fields inherited from class org.apache.zookeeper.server.quorum.QuorumZooKeeperServer

self, upgradeableSessionTracker

Fields inherited from class org.apache.zookeeper.server.ZooKeeperServer

ALLOW_SASL_FAILED_CLIENTS, CLOSE_SESSION_TXN_ENABLED, DEFAULT_STARTING_BUFFER_SIZE, DEFAULT_THROTTLED_OP_WAIT_TIME, DEFAULT_TICK_TIME, ENABLE_EAGER_ACL_CHECK, ENFORCE_QUOTA, enforceQuota, firstProcessor, GET_CHILDREN_RESPONSE_CACHE_SIZE, GET_DATA_RESPONSE_CACHE_SIZE, GLOBAL_OUTSTANDING_LIMIT, initialConfig, INT_BUFFER_STARTING_SIZE_BYTES, intBufferStartingSizeBytes, jmxDataTreeBean, jmxServerBean, jvmPauseMonitor, listenBacklog, LOG, maxSessionTimeout, minSessionTimeout, ok, reconfigEnabled, SASL_SUPER_USER, secureServerCnxnFactory, serverCnxnFactory, sessionTracker, SKIP_ACL, SNAP_COUNT, state, throttledOpWaitTime, tickTime, ZOOKEEPER_DIGEST_ENABLED

Constructor Summary

Constructors

Constructor and Description
LeaderZooKeeperServer(FileTxnSnapLog logFactory, QuorumPeer self, ZKDatabase zkDb)

Method Summary

Modifier and Type	Method and Description
boolean	checkIfValidGlobalSession(long sess, int to)
void	createSessionTracker()
int	getGlobalOutstandingLimit()
Leader	getLeader()
long	getServerId() Returns the id of the associated QuorumPeer, which will do for a unique id of this server.
String	getState()
protected void	registerJMX()
void	registerJMX(LeaderBean leaderBean, LocalPeerBean localPeerBean)
protected void	registerMetrics()
protected void	revalidateSession(ServerCnxn cnxn, long sessionId, int sessionTimeout)
protected void	setupRequestProcessors()
void	shutdown()
void	startup()
void	submitLearnerRequest(Request request) Requests coming from the learner should go directly to PrepRequestProcessor
boolean	touch(long sess, int to)
protected void	unregisterJMX()
protected void	unregisterJMX(Leader leader)
protected void	unregisterMetrics()

Methods inherited from class org.apache.zookeeper.server.quorum.QuorumZooKeeperServer

checkUpgradeSession, dumpConf, dumpMonitorValues, setLocalSessionFlag, setState, startSessionTracker, upgrade

Methods inherited from class org.apache.zookeeper.server.ZooKeeperServer

authWriteRequest, canShutdown, checkACL, checkPasswd, checkQuota, checkRequestSizeWhenReceivingMessage, closeSession, closeSession, connThrottle, decInProcess, dumpEphemerals, enqueueRequest, expire, expire, finishSessionInit, getClientPort, getClientPortListenBacklog, getConf, getConnectionDropChance, getDataDirSize, getEphemerals, getGetChildrenResponseCache, getInflight, getInitialConfig, getInProcess, getLargeRequestBytes, getLargeRequestMaxBytes, getLargeRequestThreshold, getLastProcessedZxid, getLogDirSize, getMaxClientCnxnsPerHost, getMaxSessionTimeout, getMinSessionTimeout, getNumAliveConnections, getOutstandingHandshakeNum, getOutstandingRequests, getReadResponseCache, getRequestPathMetricsCollector, getSecureClientPort, getSecureServerCnxnFactory, getServerCnxnFactory, getSessionExpiryMap, getSessionTracker, getSnapCount, getSnapSizeInBytes, getThrottledOpWaitTime, getTickTime, getTxnLogElapsedSyncTime, getTxnLogFactory, getZKDatabase, getZkShutdownHandler, getZooKeeperServerListener, getZxid, incInProcess, isCloseSessionTxnEnabled, isDigestEnabled, isReconfigEnabled, isResponseCachingEnabled, isRunning, killSession, loadData, processConnectRequest, processPacket, processTxn, processTxn, reopenSession, requestFinished, serverStats, setClientPortListenBacklog, setCloseSessionTxnEnabled, setCreateSessionTrackerServerId, setDigestEnabled, setLargeRequestMaxBytes, setLargeRequestThreshold, setMaxSessionTimeout, setMinSessionTimeout, setOwner, setResponseCachingEnabled, setSecureServerCnxnFactory, setServerCnxnFactory, setThrottledOpWaitTime, setTickTime, setTxnLogFactory, setZKDatabase, setZxid, shouldForceWriteInitialSnapshotAfterLeaderElection, shouldThrottle, shutdown, startdata, startJvmPauseMonitor, startRequestThrottler, startServing, startupWithoutServing, submitRequest, submitRequestNow, takeSnapshot, takeSnapshot, truncateLog, validateSession

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LeaderZooKeeperServer

public LeaderZooKeeperServer(FileTxnSnapLog logFactory,
                             QuorumPeer self,
                             ZKDatabase zkDb)
                      throws IOException

Throws:

IOException

Method Detail

getLeader

public Leader getLeader()

setupRequestProcessors

protected void setupRequestProcessors()

Overrides:

setupRequestProcessors in class ZooKeeperServer

startup

public void startup()

Overrides:

startup in class ZooKeeperServer

registerMetrics

protected void registerMetrics()

Overrides:

registerMetrics in class QuorumZooKeeperServer

unregisterMetrics

protected void unregisterMetrics()

Overrides:

unregisterMetrics in class QuorumZooKeeperServer

shutdown

public void shutdown()

Overrides:

shutdown in class ZooKeeperServer

getGlobalOutstandingLimit

public int getGlobalOutstandingLimit()

Overrides:

getGlobalOutstandingLimit in class ZooKeeperServer

createSessionTracker

public void createSessionTracker()

Overrides:

createSessionTracker in class ZooKeeperServer

touch

public boolean touch(long sess,
                     int to)

checkIfValidGlobalSession

public boolean checkIfValidGlobalSession(long sess,
                                         int to)

submitLearnerRequest

public void submitLearnerRequest(Request request)

Requests coming from the learner should go directly to PrepRequestProcessor

Parameters:

request -

registerJMX

protected void registerJMX()

Overrides:

registerJMX in class ZooKeeperServer

registerJMX

public void registerJMX(LeaderBean leaderBean,
                        LocalPeerBean localPeerBean)

unregisterJMX

protected void unregisterJMX()

Overrides:

unregisterJMX in class ZooKeeperServer

unregisterJMX

protected void unregisterJMX(Leader leader)

getState

public String getState()

Specified by:

getState in interface ServerStats.Provider

Overrides:

getState in class ZooKeeperServer

getServerId

public long getServerId()

Returns the id of the associated QuorumPeer, which will do for a unique id of this server.

Specified by:

getServerId in interface SessionTracker.SessionExpirer

Overrides:

getServerId in class ZooKeeperServer

revalidateSession

protected void revalidateSession(ServerCnxn cnxn,
                                 long sessionId,
                                 int sessionTimeout)
                          throws IOException

Overrides:

revalidateSession in class ZooKeeperServer

Throws:

IOException