Package org.apache.hadoop.hdfs.protocol

Class CacheDirective

java.lang.Object

org.apache.hadoop.hdfs.protocol.CacheDirective

All Implemented Interfaces:

org.apache.hadoop.util.IntrusiveCollection.Element

@Private
public final class CacheDirective
extends java.lang.Object
implements org.apache.hadoop.util.IntrusiveCollection.Element

Namenode class that tracks state related to a cached path. This is an implementation class, not part of the public API.

Constructor Summary

Constructors

Constructor	Description
CacheDirective(long id, java.lang.String path, short replication, long expiryTime)
CacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo info)

Method Summary

Modifier and Type	Method	Description
void	addBytesCached(long bytes)
void	addBytesNeeded(long bytes)
void	addFilesCached(long files)
void	addFilesNeeded(long files)
boolean	equals(java.lang.Object o)
long	getBytesCached()
long	getBytesNeeded()
long	getExpiryTime()
java.lang.String	getExpiryTimeString()
long	getFilesCached()
long	getFilesNeeded()
long	getId()
org.apache.hadoop.util.IntrusiveCollection.Element	getNext(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)
java.lang.String	getPath()
CachePool	getPool()
org.apache.hadoop.util.IntrusiveCollection.Element	getPrev(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)
short	getReplication()
int	hashCode()
void	insertInternal(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list, org.apache.hadoop.util.IntrusiveCollection.Element prev, org.apache.hadoop.util.IntrusiveCollection.Element next)
boolean	isInList(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)
void	removeInternal(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)
void	resetStatistics()	Resets the byte and file statistics being tracked by this CacheDirective.
void	setNext(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list, org.apache.hadoop.util.IntrusiveCollection.Element next)
void	setPrev(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list, org.apache.hadoop.util.IntrusiveCollection.Element prev)
org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry	toEntry()
org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo	toInfo()	Returns a CacheDirectiveInfo based on this CacheDirective.
org.apache.hadoop.hdfs.protocol.CacheDirectiveStats	toStats()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CacheDirective

public CacheDirective(org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo info)

CacheDirective

public CacheDirective(long id,
                      java.lang.String path,
                      short replication,
                      long expiryTime)

Method Detail

getId

public long getId()

getPath

public java.lang.String getPath()

getReplication

public short getReplication()

getPool

public CachePool getPool()

getExpiryTime

public long getExpiryTime()

Returns:

When this directive expires, in milliseconds since Unix epoch

getExpiryTimeString

public java.lang.String getExpiryTimeString()

Returns:

When this directive expires, as an ISO-8601 formatted string.

toInfo

public org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo toInfo()

Returns a CacheDirectiveInfo based on this CacheDirective.

This always sets an absolute expiry time, never a relative TTL.

toStats

public org.apache.hadoop.hdfs.protocol.CacheDirectiveStats toStats()

toEntry

public org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry toEntry()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

resetStatistics

public void resetStatistics()

Resets the byte and file statistics being tracked by this CacheDirective.

getBytesNeeded

public long getBytesNeeded()

addBytesNeeded

public void addBytesNeeded(long bytes)

getBytesCached

public long getBytesCached()

addBytesCached

public void addBytesCached(long bytes)

getFilesNeeded

public long getFilesNeeded()

addFilesNeeded

public void addFilesNeeded(long files)

getFilesCached

public long getFilesCached()

addFilesCached

public void addFilesCached(long files)

insertInternal

public void insertInternal(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list,
                           org.apache.hadoop.util.IntrusiveCollection.Element prev,
                           org.apache.hadoop.util.IntrusiveCollection.Element next)

Specified by:

insertInternal in interface org.apache.hadoop.util.IntrusiveCollection.Element

setPrev

public void setPrev(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list,
                    org.apache.hadoop.util.IntrusiveCollection.Element prev)

Specified by:

setPrev in interface org.apache.hadoop.util.IntrusiveCollection.Element

setNext

public void setNext(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list,
                    org.apache.hadoop.util.IntrusiveCollection.Element next)

Specified by:

setNext in interface org.apache.hadoop.util.IntrusiveCollection.Element

removeInternal

public void removeInternal(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)

Specified by:

removeInternal in interface org.apache.hadoop.util.IntrusiveCollection.Element

getPrev

public org.apache.hadoop.util.IntrusiveCollection.Element getPrev(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)

Specified by:

getPrev in interface org.apache.hadoop.util.IntrusiveCollection.Element

getNext

public org.apache.hadoop.util.IntrusiveCollection.Element getNext(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)

Specified by:

getNext in interface org.apache.hadoop.util.IntrusiveCollection.Element

isInList

public boolean isInList(org.apache.hadoop.util.IntrusiveCollection<? extends org.apache.hadoop.util.IntrusiveCollection.Element> list)

Specified by:

isInList in interface org.apache.hadoop.util.IntrusiveCollection.Element