Class LearnerZooKeeperServer
java.lang.Object
org.apache.zookeeper.server.ZooKeeperServer
org.apache.zookeeper.server.quorum.QuorumZooKeeperServer
org.apache.zookeeper.server.quorum.LearnerZooKeeperServer
- All Implemented Interfaces:
ServerStats.Provider
,SessionTracker.SessionExpirer
- Direct Known Subclasses:
FollowerZooKeeperServer
,ObserverZooKeeperServer
Parent class for all ZooKeeperServers for Learners
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.zookeeper.server.ZooKeeperServer
ZooKeeperServer.MissingSessionException, ZooKeeperServer.State
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Field Summary
FieldsFields 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
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Constructor Summary
ConstructorsConstructorDescriptionLearnerZooKeeperServer
(FileTxnSnapLog logFactory, int tickTime, int minSessionTimeout, int maxSessionTimeout, int listenBacklog, ZKDatabase zkDb, QuorumPeer self) -
Method Summary
Modifier and TypeMethodDescriptionvoid
abstract Learner
Abstract method to return the learner associated with this server.long
Returns the id of the associated QuorumPeer, which will do for a unique id of this server.Returns the current state of the session tracker.protected void
void
registerJMX
(ZooKeeperServerBean serverBean, LocalPeerBean localPeerBean) protected void
revalidateSession
(ServerCnxn cnxn, long sessionId, int sessionTimeout) void
shutdown()
protected void
protected void
unregisterJMX
(Learner peer) Methods inherited from class org.apache.zookeeper.server.quorum.QuorumZooKeeperServer
checkUpgradeSession, dumpConf, dumpMonitorValues, registerMetrics, setLocalSessionFlag, setState, startSessionTracker, unregisterMetrics, 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, getGlobalOutstandingLimit, getInflight, getInitialConfig, getInProcess, getLargeRequestBytes, getLargeRequestMaxBytes, getLargeRequestThreshold, getLastProcessedZxid, getLogDirSize, getMaxClientCnxnsPerHost, getMaxSessionTimeout, getMinSessionTimeout, getNumAliveConnections, getOutstandingHandshakeNum, getOutstandingRequests, getReadResponseCache, getRequestPathMetricsCollector, getSecureClientPort, getSecureServerCnxnFactory, getServerCnxnFactory, getSessionExpiryMap, getSessionTracker, getSnapCount, getSnapSizeInBytes, getState, 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, setupRequestProcessors, setZKDatabase, setZxid, shouldForceWriteInitialSnapshotAfterLeaderElection, shouldThrottle, shutdown, startdata, startJvmPauseMonitor, startRequestThrottler, startServing, startup, startupWithoutServing, submitRequest, submitRequestNow, takeSnapshot, takeSnapshot, truncateLog, validateSession
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Field Details
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commitProcessor
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syncProcessor
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Constructor Details
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LearnerZooKeeperServer
public LearnerZooKeeperServer(FileTxnSnapLog logFactory, int tickTime, int minSessionTimeout, int maxSessionTimeout, int listenBacklog, ZKDatabase zkDb, QuorumPeer self) throws IOException - Throws:
IOException
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Method Details
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getLearner
Abstract method to return the learner associated with this server. Since the Learner may change under our feet (when QuorumPeer reassigns it) we can't simply take a reference here. Instead, we need the subclasses to implement this. -
getTouchSnapshot
Returns the current state of the session tracker. This is only currently used by a Learner to build a ping response packet. -
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 interfaceSessionTracker.SessionExpirer
- Overrides:
getServerId
in classZooKeeperServer
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createSessionTracker
public void createSessionTracker()- Overrides:
createSessionTracker
in classZooKeeperServer
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revalidateSession
protected void revalidateSession(ServerCnxn cnxn, long sessionId, int sessionTimeout) throws IOException - Overrides:
revalidateSession
in classZooKeeperServer
- Throws:
IOException
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registerJMX
protected void registerJMX()- Overrides:
registerJMX
in classZooKeeperServer
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registerJMX
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unregisterJMX
protected void unregisterJMX()- Overrides:
unregisterJMX
in classZooKeeperServer
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unregisterJMX
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shutdown
public void shutdown()- Overrides:
shutdown
in classZooKeeperServer
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