Package org.apache.accumulo.core.fate.zookeeper

Class FateLock

java.lang.Object

org.apache.accumulo.core.fate.zookeeper.FateLock

All Implemented Interfaces:

DistributedReadWriteLock.QueueLock

public class FateLock
extends Object
implements DistributedReadWriteLock.QueueLock

A persistent lock mechanism in ZooKeeper used for locking tables during FaTE operations.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FateLock.FateLockPath

Constructor Summary

Constructors

Constructor	Description
FateLock(ZooReaderWriter zrw, FateLock.FateLockPath path)

Method Summary

Modifier and Type	Method	Description
long	addEntry(byte[] data)
SortedMap<Long,byte[]>	getEarlierEntries(long entry)
static FateLock.FateLockPath	path(String path)
void	removeEntry(long entry)
static List<String>	validateAndSort(FateLock.FateLockPath path, List<String> children)	Validate and sort child nodes at this lock path by the lock prefix

Methods inherited from class java.lang.Object

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

Constructor Detail

FateLock

public FateLock(ZooReaderWriter zrw,
                FateLock.FateLockPath path)

Method Detail

path

public static FateLock.FateLockPath path(String path)

addEntry

public long addEntry(byte[] data)

Specified by:

addEntry in interface DistributedReadWriteLock.QueueLock

getEarlierEntries

public SortedMap<Long,byte[]> getEarlierEntries(long entry)

Specified by:

getEarlierEntries in interface DistributedReadWriteLock.QueueLock

removeEntry

public void removeEntry(long entry)

Specified by:

removeEntry in interface DistributedReadWriteLock.QueueLock

validateAndSort

public static List<String> validateAndSort(FateLock.FateLockPath path,
                                           List<String> children)

Validate and sort child nodes at this lock path by the lock prefix