org.apache.hadoop.hdfs

Class DFSInputStream.ReadStatistics

java.lang.Object

org.apache.hadoop.hdfs.DFSInputStream.ReadStatistics

Enclosing class:

org.apache.hadoop.hdfs.DFSInputStream

public static class DFSInputStream.ReadStatistics
extends Object

Constructor Summary

Constructors

Constructor and Description
DFSInputStream.ReadStatistics()
DFSInputStream.ReadStatistics(DFSInputStream.ReadStatistics rhs)

Method Summary

Methods

Modifier and Type	Method and Description
long	getRemoteBytesRead()
long	getTotalBytesRead()
long	getTotalLocalBytesRead()
long	getTotalShortCircuitBytesRead()
long	getTotalZeroCopyBytesRead()

Methods inherited from class java.lang.Object

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

Constructor Detail

DFSInputStream.ReadStatistics

public DFSInputStream.ReadStatistics()

DFSInputStream.ReadStatistics

public DFSInputStream.ReadStatistics(DFSInputStream.ReadStatistics rhs)

Method Detail

getTotalBytesRead

public long getTotalBytesRead()

Returns:

The total bytes read. This will always be at least as high as the other numbers, since it includes all of them.

getTotalLocalBytesRead

public long getTotalLocalBytesRead()

Returns:

The total local bytes read. This will always be at least as high as totalShortCircuitBytesRead, since all short-circuit reads are also local.

getTotalShortCircuitBytesRead

public long getTotalShortCircuitBytesRead()

Returns:

The total short-circuit local bytes read.

getTotalZeroCopyBytesRead

public long getTotalZeroCopyBytesRead()

Returns:

The total number of zero-copy bytes read.

getRemoteBytesRead

public long getRemoteBytesRead()

Returns:

The total number of bytes read which were not local.