org.apache.hadoop.hbase.master.locking

类 LockManager.RemoteLocks

java.lang.Object

org.apache.hadoop.hbase.master.locking.LockManager.RemoteLocks

封闭类:

LockManager

public class LockManager.RemoteLocks
extends Object

Locks on namespace/table/regions for remote operations. Since remote operations are unreliable and the client/RS may die anytime and never release locks, regular heartbeats are required to keep the lock held.

构造器概要

构造器

构造器和说明
RemoteLocks()

方法概要

限定符和类型	方法和说明
boolean	lockHeartbeat(long procId, boolean keepAlive)
long	requestNamespaceLock(String namespace, LockType type, String description, NonceKey nonceKey)
long	requestRegionsLock(RegionInfo[] regionInfos, String description, NonceKey nonceKey)
long	requestTableLock(TableName tableName, LockType type, String description, NonceKey nonceKey)

从类继承的方法 java.lang.Object

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

构造器详细资料

RemoteLocks

public RemoteLocks()

方法详细资料

requestNamespaceLock

public long requestNamespaceLock(String namespace,
                                 LockType type,
                                 String description,
                                 NonceKey nonceKey)
                          throws IllegalArgumentException,
                                 IOException

抛出:

IllegalArgumentException

IOException

requestTableLock

public long requestTableLock(TableName tableName,
                             LockType type,
                             String description,
                             NonceKey nonceKey)
                      throws IllegalArgumentException,
                             IOException

抛出:

IllegalArgumentException

IOException

requestRegionsLock

public long requestRegionsLock(RegionInfo[] regionInfos,
                               String description,
                               NonceKey nonceKey)
                        throws IllegalArgumentException,
                               IOException

抛出:

IllegalArgumentException - if all regions are not from same table.

IOException

lockHeartbeat

public boolean lockHeartbeat(long procId,
                             boolean keepAlive)
                      throws IOException

参数:

keepAlive - if false, release the lock.

返回:

true, if procedure is found and it has the lock; else false.

抛出:

IOException