org.apache.hadoop.hive.ql.hooks

Class MetricsQueryLifeTimeHook

java.lang.Object

org.apache.hadoop.hive.ql.hooks.MetricsQueryLifeTimeHook

All Implemented Interfaces:

Hook, QueryLifeTimeHook

public class MetricsQueryLifeTimeHook
extends Object
implements QueryLifeTimeHook

LifeTimeHook gathering metrics for the query lifecycle if the metrics are enabled

Constructor Summary

Constructors

Constructor and Description
MetricsQueryLifeTimeHook()

Method Summary

Modifier and Type	Method and Description
void	afterCompile(QueryLifeTimeHookContext ctx, boolean hasError) Invoked after a query compilation.
void	afterExecution(QueryLifeTimeHookContext ctx, boolean hasError) Invoked after a query finishes its execution.
void	beforeCompile(QueryLifeTimeHookContext ctx) Invoked before a query enters the compilation phase.
void	beforeExecution(QueryLifeTimeHookContext ctx) Invoked before a query enters the execution phase.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetricsQueryLifeTimeHook

public MetricsQueryLifeTimeHook()

Method Detail

beforeCompile

public void beforeCompile(QueryLifeTimeHookContext ctx)

Description copied from interface: QueryLifeTimeHook

Invoked before a query enters the compilation phase.

Specified by:

beforeCompile in interface QueryLifeTimeHook

Parameters:

ctx - the context for the hook

afterCompile

public void afterCompile(QueryLifeTimeHookContext ctx,
                         boolean hasError)

Description copied from interface: QueryLifeTimeHook

Invoked after a query compilation. Note: if 'hasError' is true, the query won't enter the following execution phase.

Specified by:

afterCompile in interface QueryLifeTimeHook

Parameters:

ctx - the context for the hook

hasError - whether any error occurred during compilation.

beforeExecution

public void beforeExecution(QueryLifeTimeHookContext ctx)

Description copied from interface: QueryLifeTimeHook

Invoked before a query enters the execution phase.

Specified by:

beforeExecution in interface QueryLifeTimeHook

Parameters:

ctx - the context for the hook

afterExecution

public void afterExecution(QueryLifeTimeHookContext ctx,
                           boolean hasError)

Description copied from interface: QueryLifeTimeHook

Invoked after a query finishes its execution.

Specified by:

afterExecution in interface QueryLifeTimeHook

Parameters:

ctx - the context for the hook

hasError - whether any error occurred during query execution.