org.apache.accumulo.tserver.scan

Class ScanTask<T>

java.lang.Object

org.apache.accumulo.tserver.scan.ScanTask<T>

All Implemented Interfaces:

Runnable, Future<T>, RunnableFuture<T>

Direct Known Subclasses:

LookupTask, NextBatchTask

public abstract class ScanTask<T>
extends Object
implements RunnableFuture<T>

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicBoolean	interruptFlag
protected ArrayBlockingQueue<Object>	resultQueue
protected AtomicReference<ScanRunState>	runState
protected TabletServer	server
protected AtomicInteger	state

Method Summary

Modifier and Type	Method and Description
protected void	addResult(Object o)
boolean	cancel(boolean mayInterruptIfRunning)
T	get()
T	get(long timeout, TimeUnit unit)
ScanRunState	getScanRunState()
boolean	isCancelled()
boolean	isDone()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.RunnableFuture

run

Field Detail

server

protected final TabletServer server

interruptFlag

protected AtomicBoolean interruptFlag

resultQueue

protected ArrayBlockingQueue<Object> resultQueue

state

protected AtomicInteger state

runState

protected AtomicReference<ScanRunState> runState

Method Detail

addResult

protected void addResult(Object o)

cancel

public boolean cancel(boolean mayInterruptIfRunning)

Specified by:

cancel in interface Future<T>

get

public T get()
      throws InterruptedException,
             ExecutionException

Specified by:

get in interface Future<T>

Throws:

InterruptedException

ExecutionException

get

public T get(long timeout,
             TimeUnit unit)
      throws InterruptedException,
             ExecutionException,
             TimeoutException

Specified by:

get in interface Future<T>

Throws:

InterruptedException

ExecutionException

TimeoutException

isCancelled

public boolean isCancelled()

Specified by:

isCancelled in interface Future<T>

isDone

public boolean isDone()

Specified by:

isDone in interface Future<T>

getScanRunState

public ScanRunState getScanRunState()