Package org.apache.hadoop.fs.impl.prefetch

Class BlockOperations

java.lang.Object

org.apache.hadoop.fs.impl.prefetch.BlockOperations

public final class BlockOperations
extends Object

Block level operations performed on a file. This class is meant to be used by BlockManager. It is separated out in its own file due to its size. This class is used for debugging/logging. Calls to this class can be safely removed without affecting the overall operation.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	BlockOperations.End
static enum	BlockOperations.Kind	Operation kind.
static class	BlockOperations.Operation

Constructor Summary

Constructors

Constructor	Description
BlockOperations()

Method Summary

Modifier and Type	Method	Description
BlockOperations.Operation	addToCache(int blockNumber)
void	analyze(StringBuilder sb)
BlockOperations.Operation	cancelPrefetches()
BlockOperations.Operation	close()
BlockOperations.Operation	end(BlockOperations.Operation op)
static BlockOperations	fromSummary(String summary)
BlockOperations.Operation	getCached(int blockNumber)
void	getDurationInfo(StringBuilder sb)
BlockOperations.Operation	getPrefetched(int blockNumber)
BlockOperations.Operation	getRead(int blockNumber)
String	getSummary(boolean showDebugInfo)
BlockOperations.Operation	prefetch(int blockNumber)
BlockOperations.Operation	release(int blockNumber)
BlockOperations.Operation	requestCaching(int blockNumber)
BlockOperations.Operation	requestPrefetch(int blockNumber)
void	setDebug(boolean state)

Methods inherited from class java.lang.Object

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

Constructor Details

BlockOperations

public BlockOperations()

Method Details

setDebug

public void setDebug(boolean state)

getPrefetched

public BlockOperations.Operation getPrefetched(int blockNumber)

getCached

public BlockOperations.Operation getCached(int blockNumber)

getRead

public BlockOperations.Operation getRead(int blockNumber)

release

public BlockOperations.Operation release(int blockNumber)

requestPrefetch

public BlockOperations.Operation requestPrefetch(int blockNumber)

prefetch

public BlockOperations.Operation prefetch(int blockNumber)

cancelPrefetches

public BlockOperations.Operation cancelPrefetches()

close

public BlockOperations.Operation close()

requestCaching

public BlockOperations.Operation requestCaching(int blockNumber)

addToCache

public BlockOperations.Operation addToCache(int blockNumber)

end

public BlockOperations.Operation end(BlockOperations.Operation op)

getSummary

public String getSummary(boolean showDebugInfo)

getDurationInfo

public void getDurationInfo(StringBuilder sb)

analyze

public void analyze(StringBuilder sb)

fromSummary

public static BlockOperations fromSummary(String summary)