ml.shifu.guagua.master

Class MemoryStatsMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

java.lang.Object

ml.shifu.guagua.master.BasicMasterInterceptor<MASTER_RESULT,WORKER_RESULT>

ml.shifu.guagua.master.MemoryStatsMasterInterceptor<MASTER_RESULT,WORKER_RESULT>

Type Parameters:

MASTER_RESULT - master result for computation in each iteration.

WORKER_RESULT - worker result for computation in each iteration.

All Implemented Interfaces:

MasterInterceptor<MASTER_RESULT,WORKER_RESULT>

public class MemoryStatsMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>
extends BasicMasterInterceptor<MASTER_RESULT,WORKER_RESULT>

MemoryStatsMasterInterceptor is used to print memory usage for each master checkpoint.

MemoryStatsMasterInterceptor is set as default system interceptor. So memory usage will be found in each task's log file.

Constructor Summary

Constructors

Constructor and Description
MemoryStatsMasterInterceptor()

Method Summary

Methods

Modifier and Type	Method and Description
void	postApplication(MasterContext<MASTER_RESULT,WORKER_RESULT> context) The hook point after any computation logic.
void	postIteration(MasterContext<MASTER_RESULT,WORKER_RESULT> context) The hook point after computation of each iteration.
void	preApplication(MasterContext<MASTER_RESULT,WORKER_RESULT> context) The hook point before any computation logic.
void	preIteration(MasterContext<MASTER_RESULT,WORKER_RESULT> context) The hook point before computation of each iteration.

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryStatsMasterInterceptor

public MemoryStatsMasterInterceptor()

Method Detail

preIteration

public void preIteration(MasterContext<MASTER_RESULT,WORKER_RESULT> context)

Description copied from interface: MasterInterceptor

The hook point before computation of each iteration.

Specified by:

preIteration in interface MasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Overrides:

preIteration in class BasicMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Parameters:

context - the master context instance which includes worker results and other useful parameters.

postIteration

public void postIteration(MasterContext<MASTER_RESULT,WORKER_RESULT> context)

Description copied from interface: MasterInterceptor

The hook point after computation of each iteration.

Specified by:

postIteration in interface MasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Overrides:

postIteration in class BasicMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Parameters:

context - the master context instance which includes worker results and other useful parameters.

preApplication

public void preApplication(MasterContext<MASTER_RESULT,WORKER_RESULT> context)

Description copied from interface: MasterInterceptor

The hook point before any computation logic.

Specified by:

preApplication in interface MasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Overrides:

preApplication in class BasicMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Parameters:

context - the master context instance which includes worker results and other useful parameters.

postApplication

public void postApplication(MasterContext<MASTER_RESULT,WORKER_RESULT> context)

Description copied from interface: MasterInterceptor

The hook point after any computation logic.

Specified by:

postApplication in interface MasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Overrides:

postApplication in class BasicMasterInterceptor<MASTER_RESULT extends Bytable,WORKER_RESULT extends Bytable>

Parameters:

context - the master context instance which includes worker results and other useful parameters.