org.apache.drill.test

Class OperatorFixture.MockExecutorState

java.lang.Object

org.apache.drill.test.OperatorFixture.MockExecutorState

All Implemented Interfaces:

FragmentContext.ExecutorState

Enclosing class:

OperatorFixture

public static class OperatorFixture.MockExecutorState
extends Object
implements FragmentContext.ExecutorState

Constructor Summary

Constructors

Constructor and Description
MockExecutorState()

Method Summary

Modifier and Type	Method and Description
void	checkContinue() Check if an operation should continue.
void	fail(Throwable t) Inform the executor if a exception occurs and fragment should be failed.
Throwable	getFailureCause()
boolean	isFailed()
boolean	shouldContinue() Tells individual operations whether they should continue.

Methods inherited from class java.lang.Object

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

Constructor Detail

MockExecutorState

public MockExecutorState()

Method Detail

shouldContinue

public boolean shouldContinue()

Description copied from interface: FragmentContext.ExecutorState

Tells individual operations whether they should continue. In some cases, an external event (typically cancellation) will mean that the fragment should prematurely exit execution. Long running operations should check this every so often so that Drill is responsive to cancellation operations.

Specified by:

shouldContinue in interface FragmentContext.ExecutorState

Returns:

False if the action should terminate immediately, true if everything is okay.

fail

public void fail(Throwable t)

Description copied from interface: FragmentContext.ExecutorState

Inform the executor if a exception occurs and fragment should be failed.

Specified by:

fail in interface FragmentContext.ExecutorState

Parameters:

t - The exception that occurred.

isFailed

public boolean isFailed()

Specified by:

isFailed in interface FragmentContext.ExecutorState

getFailureCause

public Throwable getFailureCause()

Specified by:

getFailureCause in interface FragmentContext.ExecutorState

checkContinue

public void checkContinue()

Description copied from interface: FragmentContext.ExecutorState

Check if an operation should continue. In some cases, an external event (typically cancellation) will mean that the fragment should prematurely exit execution. Long running operations should check this every so often so that Drill is responsive to cancellation operations.

Throws QueryCancelledException if the query (fragment) should stop. The fragment executor interprets this as an exception it, itself, requested, and will call the operator's close() method to release resources. Operators should not catch and handle this exception, and should only call this method when the operator holds no transient resources (such as local variables.)

Specified by:

checkContinue in interface FragmentContext.ExecutorState