org.apache.hadoop.hdfs

Class DFSUtil.DecomStaleComparator

java.lang.Object

org.apache.hadoop.hdfs.DFSUtil.DecomStaleComparator

All Implemented Interfaces:

Comparator<DatanodeInfo>

Enclosing class:

DFSUtil

@InterfaceAudience.Private
public static class DFSUtil.DecomStaleComparator
extends Object
implements Comparator<DatanodeInfo>

Comparator for sorting DataNodeInfo[] based on decommissioned/stale states. Decommissioned/stale nodes are moved to the end of the array on sorting with this comparator.

Constructor Summary

Constructors

Constructor and Description
DFSUtil.DecomStaleComparator(long interval) Constructor of DecomStaleComparator

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(DatanodeInfo a, DatanodeInfo b)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

DFSUtil.DecomStaleComparator

public DFSUtil.DecomStaleComparator(long interval)

Constructor of DecomStaleComparator

Parameters:

interval - The time interval for marking datanodes as stale is passed from outside, since the interval may be changed dynamically

Method Detail

compare

public int compare(DatanodeInfo a,
          DatanodeInfo b)

Specified by:

compare in interface Comparator<DatanodeInfo>