org.apache.hadoop.hdfs.server.datanode
Class CachingStrategy

java.lang.Object
  org.apache.hadoop.hdfs.server.datanode.CachingStrategy

public class CachingStrategy
extends Object

The caching strategy we should use for an HDFS read or write operation.

Constructor Summary

CachingStrategy(Boolean dropBehind, Long readahead)

Method Summary

CachingStrategy	duplicate()
Boolean	getDropBehind()
Long	getReadahead()
static CachingStrategy	newDefaultStrategy()
static CachingStrategy	newDropBehind()
void	setDropBehind(Boolean dropBehind)
void	setReadahead(Long readahead)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingStrategy

public CachingStrategy(Boolean dropBehind,
                       Long readahead)

Method Detail

newDefaultStrategy

public static CachingStrategy newDefaultStrategy()

newDropBehind

public static CachingStrategy newDropBehind()

duplicate

public CachingStrategy duplicate()

getDropBehind

public Boolean getDropBehind()

setDropBehind

public void setDropBehind(Boolean dropBehind)

getReadahead

public Long getReadahead()

setReadahead

public void setReadahead(Long readahead)

toString

public String toString()

Overrides:

toString in class Object