org.apache.hadoop.hbase.zookeeper.lock

类 ZKInterProcessWriteLock

java.lang.Object

org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessLockBase

org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessWriteLock

所有已实现的接口:

InterProcessLock

@InterfaceAudience.Private
public class ZKInterProcessWriteLock
extends ZKInterProcessLockBase

ZooKeeper based write lock:

嵌套类概要

从类继承的嵌套类/接口 org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessLockBase

ZKInterProcessLockBase.AcquiredLock, ZKInterProcessLockBase.ZNodeComparator

从接口继承的嵌套类/接口 org.apache.hadoop.hbase.InterProcessLock

InterProcessLock.MetadataHandler

字段概要

从类继承的字段 org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessLockBase

acquiredLock, childZNode, fullyQualifiedZNode, handler, metadata, parentLockNode, READ_LOCK_CHILD_NODE_PREFIX, WRITE_LOCK_CHILD_NODE_PREFIX, zkWatcher

构造器概要

构造器

构造器和说明
ZKInterProcessWriteLock(ZooKeeperWatcher zooKeeperWatcher, String znode, byte[] metadata, InterProcessLock.MetadataHandler handler)

方法概要

方法

限定符和类型	方法和说明
protected String	getLockPath(String createdZNode, List<String> children) Determine based on a list of children under a ZNode, whether or not a process which created a specified ZNode has obtained a lock.

从类继承的方法 org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessLockBase

acquire, handleLockMetadata, handleLockMetadata, isChildOfSameType, isChildReadLock, isChildWriteLock, reapAllLocks, reapExpiredLocks, release, tryAcquire, updateAcquiredLock, visitLocks

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

ZKInterProcessWriteLock

public ZKInterProcessWriteLock(ZooKeeperWatcher zooKeeperWatcher,
                       String znode,
                       byte[] metadata,
                       InterProcessLock.MetadataHandler handler)

方法详细资料

getLockPath

protected String getLockPath(String createdZNode,
                 List<String> children)
                      throws IOException

Determine based on a list of children under a ZNode, whether or not a process which created a specified ZNode has obtained a lock. If a lock is not obtained, return the path that we should watch awaiting its deletion. Otherwise, return null. This method is abstract as the logic for determining whether or not a lock is obtained depends on the type of lock being implemented.

指定者:

getLockPath 在类中 ZKInterProcessLockBase

参数:

createdZNode - The ZNode created by the process attempting to acquire a lock

children - List of all child ZNodes under the lock's parent ZNode

返回:

The path to watch, or null if myZNode can represent a correctly acquired lock.

抛出:

IOException