org.apache.hadoop.hbase.zookeeper.lock

类 ZKInterProcessReadWriteLock

java.lang.Object

org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessReadWriteLock

所有已实现的接口:

InterProcessReadWriteLock

@InterfaceAudience.Private
public class ZKInterProcessReadWriteLock
extends Object
implements InterProcessReadWriteLock

ZooKeeper based implementation of InterProcessReadWriteLock. This lock is fair, not reentrant, and not revocable.

构造器概要

构造器

构造器和说明
ZKInterProcessReadWriteLock(ZooKeeperWatcher zkWatcher, String znode, InterProcessLock.MetadataHandler handler) Creates a DistributedReadWriteLock instance.

方法概要

方法

限定符和类型	方法和说明
ZKInterProcessReadLock	readLock(byte[] metadata) Obtain a read lock containing given metadata.
ZKInterProcessWriteLock	writeLock(byte[] metadata) Obtain a write lock containing given metadata.

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

ZKInterProcessReadWriteLock

public ZKInterProcessReadWriteLock(ZooKeeperWatcher zkWatcher,
                           String znode,
                           InterProcessLock.MetadataHandler handler)

Creates a DistributedReadWriteLock instance.

参数:

zkWatcher -

znode - ZNode path for the lock

handler - An object that will handle de-serializing and processing the metadata associated with reader or writer locks created by this object or null if none desired.

方法详细资料

readLock

public ZKInterProcessReadLock readLock(byte[] metadata)

Obtain a read lock containing given metadata.

指定者:

readLock 在接口中 InterProcessReadWriteLock

参数:

metadata - Serialized lock metadata (this may contain information such as the process owning the lock or the purpose for which the lock was acquired).

返回:

An instantiated InterProcessLock instance

writeLock

public ZKInterProcessWriteLock writeLock(byte[] metadata)

Obtain a write lock containing given metadata.

指定者:

writeLock 在接口中 InterProcessReadWriteLock

参数:

metadata - Serialized lock metadata (this may contain information such as the process owning the lock or the purpose for which the lock was acquired).

返回:

An instantiated InterProcessLock instance