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

Class SourceWrappedStatistics

java.lang.Object

org.apache.hadoop.fs.statistics.impl.SourceWrappedStatistics

All Implemented Interfaces:

IOStatisticsSource

public class SourceWrappedStatistics
extends java.lang.Object
implements IOStatisticsSource

Wrap a statistics instance with an IOStatisticsSource instance which will then serve up the statistics when asked.

Constructor Summary

Constructors

Constructor	Description
SourceWrappedStatistics(IOStatistics source)	Constructor.

Method Summary

Modifier and Type	Method	Description
IOStatistics	getIOStatistics()	Return a statistics instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

SourceWrappedStatistics

public SourceWrappedStatistics(IOStatistics source)

Constructor.

Parameters:

source - source of statistics.

Method Detail

getIOStatistics

public IOStatistics getIOStatistics()

Description copied from interface: IOStatisticsSource

Return a statistics instance.

It is not a requirement that the same instance is returned every time. IOStatisticsSource.

If the object implementing this is Closeable, this method may return null if invoked on a closed object, even if it returns a valid instance when called earlier.

Specified by:

getIOStatistics in interface IOStatisticsSource

Returns:

an IOStatistics instance or null