Package io.datarouter.bytes.blockfile.io.compact

Class BlockfileCompactorFileCache

java.lang.Object

io.datarouter.bytes.blockfile.io.compact.BlockfileCompactorFileCache

public class BlockfileCompactorFileCache
extends Object

Keeps track of files during a compaction. Can be enhanced with different selection strategies for efficient compaction.

Constructor Summary

Constructors

Constructor	Description
BlockfileCompactorFileCache(int targetNumFiles, boolean prune, ByteLength readBufferSize, int memoryFanIn, int streamingFanIn, List<BlockfileNameAndSize> files)

Method Summary

Modifier and Type	Method	Description
void	add(BlockfileNameAndSize file)
Optional<BlockfileMergePlan>	findNextMergePlan()
boolean	hasMoreToMerge()
static int	level(long fileSize)	Effectively rounds up to an exact power of 2.
int	numFiles()
void	remove(BlockfileNameAndSize file)
ByteLength	totalSize()

Methods inherited from class java.lang.Object

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

Constructor Details

BlockfileCompactorFileCache

public BlockfileCompactorFileCache(int targetNumFiles,
 boolean prune,
 ByteLength readBufferSize,
 int memoryFanIn,
 int streamingFanIn,
 List<BlockfileNameAndSize> files)

Method Details

numFiles

public int numFiles()

totalSize

public ByteLength totalSize()

add

public void add(BlockfileNameAndSize file)

remove

public void remove(BlockfileNameAndSize file)

hasMoreToMerge

public boolean hasMoreToMerge()

findNextMergePlan

public Optional<BlockfileMergePlan> findNextMergePlan()

level

public static int level(long fileSize)

Effectively rounds up to an exact power of 2.