Package io.datarouter.bytes.kvfile.compact

Class KvFileCompactorFileCache

java.lang.Object

io.datarouter.bytes.kvfile.compact.KvFileCompactorFileCache

public class KvFileCompactorFileCache
extends Object

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

Constructor Summary

Constructors

Constructor	Description
KvFileCompactorFileCache(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<KvFileMergePlan>	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

KvFileCompactorFileCache

public KvFileCompactorFileCache(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<KvFileMergePlan> findNextMergePlan()

level

public static int level(long fileSize)

Effectively rounds up to an exact power of 2.