org.apache.hadoop.hbase.procedure

类 ZKProcedureCoordinatorRpcs

java.lang.Object

org.apache.hadoop.hbase.procedure.ZKProcedureCoordinatorRpcs

所有已实现的接口:

Closeable, AutoCloseable, ProcedureCoordinatorRpcs

@InterfaceAudience.Private
public class ZKProcedureCoordinatorRpcs
extends Object
implements ProcedureCoordinatorRpcs

ZooKeeper based ProcedureCoordinatorRpcs for a ProcedureCoordinator

字段概要

字段

限定符和类型	字段和说明
protected ProcedureCoordinator	coordinator

构造器概要

构造器

构造器和说明
ZKProcedureCoordinatorRpcs(ZooKeeperWatcher watcher, String procedureClass, String coordName)

方法概要

方法

限定符和类型	方法和说明
protected void	abort(String abortNode) Receive a notification and propagate it to the local coordinator
void	close()
void	resetMembers(Procedure proc) Delete znodes that are no longer in use.
void	sendAbortToMembers(Procedure proc, ForeignException ee) This is the abort message being sent by the coordinator to member TODO this code isn't actually used but can be used to issue a cancellation from the coordinator.
void	sendGlobalBarrierAcquire(Procedure proc, byte[] info, List<String> nodeNames) The "acquire" phase.
void	sendGlobalBarrierReached(Procedure proc, List<String> nodeNames) Notify members that all members have acquired their parts of the barrier and that they can now execute under the global barrier.
boolean	start(ProcedureCoordinator coordinator) Start monitoring znodes in ZK - subclass hook to start monitoring znodes they are about.

从类继承的方法 java.lang.Object

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

字段详细资料

coordinator

protected ProcedureCoordinator coordinator

构造器详细资料

ZKProcedureCoordinatorRpcs

public ZKProcedureCoordinatorRpcs(ZooKeeperWatcher watcher,
                          String procedureClass,
                          String coordName)
                           throws org.apache.zookeeper.KeeperException

参数:

watcher - zookeeper watcher. Owned by this and closed via close()

procedureClass - procedure type name is a category for when there are multiple kinds of procedures.-- this becomes a znode so be aware of the naming restrictions

coordName - name of the node running the coordinator

抛出:

org.apache.zookeeper.KeeperException - if an unexpected zk error occurs

方法详细资料

sendGlobalBarrierAcquire

public final void sendGlobalBarrierAcquire(Procedure proc,
                            byte[] info,
                            List<String> nodeNames)
                                    throws IOException,
                                           IllegalArgumentException

The "acquire" phase. The coordinator creates a new procType/acquired/ znode dir. If znodes appear, first acquire to relevant listener or sets watch waiting for notification of the acquire node

指定者:

sendGlobalBarrierAcquire 在接口中 ProcedureCoordinatorRpcs

参数:

proc - the Procedure

info - data to be stored in the acquire node

nodeNames - children of the acquire phase

抛出:

IOException - if any failure occurs.

IllegalArgumentException - if the procedure was already marked as failed

sendGlobalBarrierReached

public void sendGlobalBarrierReached(Procedure proc,
                            List<String> nodeNames)
                              throws IOException

从接口复制的说明: ProcedureCoordinatorRpcs

Notify members that all members have acquired their parts of the barrier and that they can now execute under the global barrier. Must come after calling ProcedureCoordinatorRpcs.sendGlobalBarrierAcquire(Procedure, byte[], List)

指定者:

sendGlobalBarrierReached 在接口中 ProcedureCoordinatorRpcs

参数:

proc - name of the procedure to start

nodeNames - members to tell we have reached in-barrier phase

抛出:

IOException - if we can't reach the remote notification mechanism

resetMembers

public final void resetMembers(Procedure proc)
                        throws IOException

Delete znodes that are no longer in use.

指定者:

resetMembers 在接口中 ProcedureCoordinatorRpcs

参数:

proc - name of the procedure to reset

抛出:

IOException - if the remote notification mechanism cannot be reached

start

public final boolean start(ProcedureCoordinator coordinator)

Start monitoring znodes in ZK - subclass hook to start monitoring znodes they are about.

指定者:

start 在接口中 ProcedureCoordinatorRpcs

返回:

true if succeed, false if encountered initialization errors.

sendAbortToMembers

public final void sendAbortToMembers(Procedure proc,
                      ForeignException ee)

This is the abort message being sent by the coordinator to member TODO this code isn't actually used but can be used to issue a cancellation from the coordinator.

指定者:

sendAbortToMembers 在接口中 ProcedureCoordinatorRpcs

参数:

proc - name of the procedure that was aborted

ee - the reason why the procedure needs to be aborted

abort

protected void abort(String abortNode)

Receive a notification and propagate it to the local coordinator

参数:

abortNode - full znode path to the failed procedure information

close

public final void close()
                 throws IOException

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

抛出:

IOException