org.apache.accumulo.server.zookeeper

Class DistributedWorkQueue

java.lang.Object

org.apache.accumulo.server.zookeeper.DistributedWorkQueue

public class DistributedWorkQueue
extends Object

Provides a way to push work out to tablet servers via zookeeper and wait for that work to be done. Any tablet server can pick up a work item and process it. Worker processes watch a zookeeper node for tasks to be performed. After getting an exclusive lock on the node, the worker will perform the task.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	DistributedWorkQueue.Processor

Constructor Summary

Constructors

Constructor and Description
DistributedWorkQueue(String path)

Method Summary

Methods

Modifier and Type	Method and Description
void	addWork(String workId, byte[] data)
List<String>	getWorkQueued()
void	startProcessing(DistributedWorkQueue.Processor processor, ThreadPoolExecutor executorService)
void	waitUntilDone(Set<String> workIDs)

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributedWorkQueue

public DistributedWorkQueue(String path)

Method Detail

startProcessing

public void startProcessing(DistributedWorkQueue.Processor processor,
                   ThreadPoolExecutor executorService)
                     throws org.apache.zookeeper.KeeperException,
                            InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

addWork

public void addWork(String workId,
           byte[] data)
             throws org.apache.zookeeper.KeeperException,
                    InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

getWorkQueued

public List<String> getWorkQueued()
                           throws org.apache.zookeeper.KeeperException,
                                  InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

waitUntilDone

public void waitUntilDone(Set<String> workIDs)
                   throws org.apache.zookeeper.KeeperException,
                          InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException