Package org.apache.drill.exec.work.fragment

Class AbstractFragmentManager

java.lang.Object

org.apache.drill.exec.work.fragment.AbstractFragmentManager

All Implemented Interfaces:

FragmentManager

Direct Known Subclasses:

NonRootFragmentManager, RootFragmentManager

public abstract class AbstractFragmentManager
extends Object
implements FragmentManager

Field Summary

Fields

Modifier and Type	Field	Description
protected final IncomingBuffers	buffers
protected boolean	cancel
protected final ExecutorFragmentContext	fragmentContext
protected final FragmentExecutor	fragmentExecutor
protected final ExecProtos.FragmentHandle	fragmentHandle

Constructor Summary

Constructors

Constructor	Description
AbstractFragmentManager(BitControl.PlanFragment fragment, FragmentExecutor executor, FragmentStatusReporter statusReporter)
AbstractFragmentManager(BitControl.PlanFragment fragment, FragmentExecutor executor, FragmentStatusReporter statusReporter, FragmentRoot rootOperator)

Method Summary

Modifier and Type	Method	Description
void	cancel()
FragmentContext	getFragmentContext()
ExecProtos.FragmentHandle	getHandle()
FragmentExecutor	getRunnable()	Get the fragment runner for this incoming fragment.
boolean	handle(IncomingDataBatch batch)	Handle the next incoming record batch.
boolean	isCancelled()	Find out if the FragmentManager has been cancelled.
boolean	isWaiting()
abstract void	receivingFragmentFinished(ExecProtos.FragmentHandle handle)
void	unpause()	If the executor is paused (for testing), this method should unpause the executor.

Methods inherited from class java.lang.Object

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

Field Details

buffers

protected final IncomingBuffers buffers

fragmentExecutor

protected final FragmentExecutor fragmentExecutor

fragmentHandle

protected final ExecProtos.FragmentHandle fragmentHandle

fragmentContext

protected final ExecutorFragmentContext fragmentContext

cancel

protected volatile boolean cancel

Constructor Details

AbstractFragmentManager

public AbstractFragmentManager(BitControl.PlanFragment fragment,
 FragmentExecutor executor,
 FragmentStatusReporter statusReporter,
 FragmentRoot rootOperator)

AbstractFragmentManager

public AbstractFragmentManager(BitControl.PlanFragment fragment,
 FragmentExecutor executor,
 FragmentStatusReporter statusReporter)

Method Details

handle

public boolean handle(IncomingDataBatch batch)
               throws FragmentSetupException,
IOException

Description copied from interface: FragmentManager

Handle the next incoming record batch.

Specified by:

handle in interface FragmentManager

Returns:

True if the fragment has enough incoming data to be able to be run.

Throws:

FragmentSetupException

IOException

isCancelled

public boolean isCancelled()

Description copied from interface: FragmentManager

Find out if the FragmentManager has been cancelled.

Specified by:

isCancelled in interface FragmentManager

Returns:

true if the FragmentManager has been cancelled.

unpause

public void unpause()

Description copied from interface: FragmentManager

If the executor is paused (for testing), this method should unpause the executor. This method should handle multiple calls.

Specified by:

unpause in interface FragmentManager

getHandle

public ExecProtos.FragmentHandle getHandle()

Specified by:

getHandle in interface FragmentManager

isWaiting

public boolean isWaiting()

Specified by:

isWaiting in interface FragmentManager

getFragmentContext

public FragmentContext getFragmentContext()

Specified by:

getFragmentContext in interface FragmentManager

getRunnable

public FragmentExecutor getRunnable()

Description copied from interface: FragmentManager

Get the fragment runner for this incoming fragment. Note, this can only be requested once.

Specified by:

getRunnable in interface FragmentManager

Returns:

receivingFragmentFinished

public abstract void receivingFragmentFinished(ExecProtos.FragmentHandle handle)

Specified by:

receivingFragmentFinished in interface FragmentManager

cancel

public void cancel()

Specified by:

cancel in interface FragmentManager