Package org.apache.hadoop.fs.statistics.impl

Class StubDurationTracker

java.lang.Object

org.apache.hadoop.fs.statistics.impl.StubDurationTracker

All Implemented Interfaces:

java.lang.AutoCloseable, DurationTracker

public final class StubDurationTracker
extends java.lang.Object
implements DurationTracker

A simple stub duration tracker which can be issued in interfaces and other places where full duration tracking is not implemented.

Field Summary

Fields

Modifier and Type	Field	Description
static DurationTracker	STUB_DURATION_TRACKER

Method Summary

Modifier and Type	Method	Description
java.time.Duration	asDuration()	Get the duration of an operation as a java Duration instance.
void	close()	Finish tracking: update the statistics with the timings.
void	failed()	The operation failed.

Methods inherited from class java.lang.Object

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

Field Detail

STUB_DURATION_TRACKER

public static final DurationTracker STUB_DURATION_TRACKER

Method Detail

failed

public void failed()

Description copied from interface: DurationTracker

The operation failed. Failure statistics will be updated.

Specified by:

failed in interface DurationTracker

close

public void close()

Description copied from interface: DurationTracker

Finish tracking: update the statistics with the timings.

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface DurationTracker

asDuration

public java.time.Duration asDuration()

Description copied from interface: DurationTracker

Get the duration of an operation as a java Duration instance. If the duration tracker hasn't completed, or its duration tracking doesn't actually measure duration, returns Duration.ZERO.

Specified by:

asDuration in interface DurationTracker

Returns:

a duration, value of ZERO until close().