org.apache.hadoop.hive.ql.reexec

Class ReOptimizePlugin

java.lang.Object

org.apache.hadoop.hive.ql.reexec.ReOptimizePlugin

All Implemented Interfaces:

IReExecutionPlugin

public class ReOptimizePlugin
extends Object
implements IReExecutionPlugin

Constructor Summary

Constructors

Constructor and Description
ReOptimizePlugin()

Method Summary

Modifier and Type	Method and Description
void	afterExecute(PlanMapper planMapper, boolean success) Called after the driver executed the query - delivers the status and the plan data.
void	beforeExecute(int executionIndex, boolean explainReOptimization) Called before executing the query.
void	initialize(Driver driver) Called when the Driver is being initialized The plugin may add hooks/etc to tap into the system.
void	prepareToReExecute() The plugin should prepare for the re-compilation of the query.
boolean	shouldReExecute(int executionNum) The query have failed, does this plugin advises to re-execute it again?
boolean	shouldReExecuteAfterCompile(int executionNum, PlanMapper oldPlanMapper, PlanMapper newPlanMapper) The query has failed; and have been recompiled - does this plugin advises to re-execute it again?

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hive.ql.reexec.IReExecutionPlugin

afterCompile, beforeCompile, prepareToReCompile, shouldReCompile

Constructor Detail

ReOptimizePlugin

public ReOptimizePlugin()

Method Detail

initialize

public void initialize(Driver driver)

Description copied from interface: IReExecutionPlugin

Called when the Driver is being initialized The plugin may add hooks/etc to tap into the system.

Specified by:

initialize in interface IReExecutionPlugin

shouldReExecute

public boolean shouldReExecute(int executionNum)

Description copied from interface: IReExecutionPlugin

The query have failed, does this plugin advises to re-execute it again?

Specified by:

shouldReExecute in interface IReExecutionPlugin

prepareToReExecute

public void prepareToReExecute()

Description copied from interface: IReExecutionPlugin

The plugin should prepare for the re-compilation of the query.

Specified by:

prepareToReExecute in interface IReExecutionPlugin

shouldReExecuteAfterCompile

public boolean shouldReExecuteAfterCompile(int executionNum,
                                           PlanMapper oldPlanMapper,
                                           PlanMapper newPlanMapper)

Description copied from interface: IReExecutionPlugin

The query has failed; and have been recompiled - does this plugin advises to re-execute it again?

Specified by:

shouldReExecuteAfterCompile in interface IReExecutionPlugin

beforeExecute

public void beforeExecute(int executionIndex,
                          boolean explainReOptimization)

Description copied from interface: IReExecutionPlugin

Called before executing the query.

Specified by:

beforeExecute in interface IReExecutionPlugin

afterExecute

public void afterExecute(PlanMapper planMapper,
                         boolean success)

Description copied from interface: IReExecutionPlugin

Called after the driver executed the query - delivers the status and the plan data.

Specified by:

afterExecute in interface IReExecutionPlugin