org.rocksdb

Class WriteBufferManager

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.WriteBufferManager

All Implemented Interfaces:

AutoCloseable

public class WriteBufferManager
extends RocksObject

Java wrapper over native write_buffer_manager class

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

owningHandle_

Constructor Summary

Constructors

Constructor and Description
WriteBufferManager(long bufferSizeBytes, Cache cache)
WriteBufferManager(long bufferSizeBytes, Cache cache, boolean allowStall) Construct a new instance of WriteBufferManager.

Method Summary

Modifier and Type	Method and Description
boolean	allowStall()
protected void	disposeInternal(long handle)

Methods inherited from class org.rocksdb.RocksObject

disposeInternal, getNativeHandle

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteBufferManager

public WriteBufferManager(long bufferSizeBytes,
                          Cache cache,
                          boolean allowStall)

Construct a new instance of WriteBufferManager. Check https://github.com/facebook/rocksdb/wiki/Write-Buffer-Manager for more details on when to use it

Parameters:

bufferSizeBytes - buffer size(in bytes) to use for native write_buffer_manager

cache - cache whose memory should be bounded by this write buffer manager

allowStall - if set true, it will enable stalling of writes when memory_usage() exceeds buffer_size. It will wait for flush to complete and memory usage to drop down.

WriteBufferManager

public WriteBufferManager(long bufferSizeBytes,
                          Cache cache)

Method Detail

allowStall

public boolean allowStall()

disposeInternal

protected void disposeInternal(long handle)

Specified by:

disposeInternal in class RocksObject