Package org.apache.zookeeper.server.quorum

Class QuorumZooKeeperServer

java.lang.Object

org.apache.zookeeper.server.ZooKeeperServer

org.apache.zookeeper.server.quorum.QuorumZooKeeperServer

All Implemented Interfaces:

ServerStats.Provider, SessionTracker.SessionExpirer

Direct Known Subclasses:

LeaderZooKeeperServer, LearnerZooKeeperServer, ReadOnlyZooKeeperServer

public abstract class QuorumZooKeeperServer
extends ZooKeeperServer

Abstract base class for all ZooKeeperServers that participate in a quorum.

Nested Class Summary

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

ZooKeeperServer.BasicDataTreeBuilder, ZooKeeperServer.DataTreeBuilder, ZooKeeperServer.MissingSessionException, ZooKeeperServer.State

Field Summary

Fields

Modifier and Type	Field	Description
protected QuorumPeer	self

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

DEFAULT_TICK_TIME, firstProcessor, jmxDataTreeBean, jmxServerBean, LOG, maxSessionTimeout, minSessionTimeout, ok, sessionTracker, state, tickTime

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	QuorumZooKeeperServer(FileTxnSnapLog logFactory, int tickTime, int minSessionTimeout, int maxSessionTimeout, ZooKeeperServer.DataTreeBuilder treeBuilder, ZKDatabase zkDb, QuorumPeer self)

Method Summary

Modifier and Type	Method	Description
void	dumpConf(java.io.PrintWriter pwriter)
protected void	setState(ZooKeeperServer.State state)	Sets the state of ZooKeeper server.

Methods inherited from class java.lang.Object

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

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

canShutdown, checkPasswd, closeSession, closeSession, createSessionTracker, decInProcess, dumpEphemerals, expire, finishSessionInit, getClientPort, getGlobalOutstandingLimit, getInProcess, getLastProcessedZxid, getMaxSessionTimeout, getMinSessionTimeout, getNumAliveConnections, getOutstandingRequests, getServerCnxnFactory, getServerId, getSnapCount, getState, getTickTime, getTxnLogFactory, getZKDatabase, getZooKeeperServerListener, getZxid, incInProcess, isRunning, killSession, loadData, processConnectRequest, processPacket, processTxn, registerJMX, reopenSession, revalidateSession, serverStats, setMaxSessionTimeout, setMinSessionTimeout, setOwner, setServerCnxnFactory, setTickTime, setTxnLogFactory, setupRequestProcessors, setZKDatabase, setZxid, shouldThrottle, shutdown, shutdown, startdata, startSessionTracker, startup, submitRequest, takeSnapshot, truncateLog, unregisterJMX

Field Detail

self

protected final QuorumPeer self

Constructor Detail

QuorumZooKeeperServer

protected QuorumZooKeeperServer(FileTxnSnapLog logFactory,
                                int tickTime,
                                int minSessionTimeout,
                                int maxSessionTimeout,
                                ZooKeeperServer.DataTreeBuilder treeBuilder,
                                ZKDatabase zkDb,
                                QuorumPeer self)

Method Detail

dumpConf

public void dumpConf(java.io.PrintWriter pwriter)

Overrides:

dumpConf in class ZooKeeperServer

setState

protected void setState(ZooKeeperServer.State state)

Description copied from class: ZooKeeperServer

Sets the state of ZooKeeper server. After changing the state, it notifies the server state change to a registered shutdown handler, if any.

The following are the server state transitions:

During startup the server will be in the INITIAL state. After successfully starting, the server sets the state to RUNNING. The server transitions to the ERROR state if it hits an internal error. ZooKeeperServerListenerImpl notifies any critical resource error events, e.g., SyncRequestProcessor not being able to write a txn to disk. During shutdown the server sets the state to SHUTDOWN, which corresponds to the server not running.

Overrides:

setState in class ZooKeeperServer

Parameters:

state - new server state.