org.apache.flink.contrib.streaming.state

Class RocksDBMemoryControllerUtils

java.lang.Object

org.apache.flink.contrib.streaming.state.RocksDBMemoryControllerUtils

public class RocksDBMemoryControllerUtils
extends Object

Utils to crate Cache and WriteBufferManager which used to control total memory usage of RocksDB.

Constructor Summary

Constructors

Constructor and Description
RocksDBMemoryControllerUtils()

Method Summary

Modifier and Type	Method and Description
static org.apache.flink.contrib.streaming.state.RocksDBSharedResources	allocateRocksDBSharedResources(long totalMemorySize, double writeBufferRatio, double highPriorityPoolRatio) Allocate memory controllable RocksDB shared resources.

Methods inherited from class java.lang.Object

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

Constructor Detail

RocksDBMemoryControllerUtils

public RocksDBMemoryControllerUtils()

Method Detail

allocateRocksDBSharedResources

public static org.apache.flink.contrib.streaming.state.RocksDBSharedResources allocateRocksDBSharedResources(long totalMemorySize,
                                                                                                             double writeBufferRatio,
                                                                                                             double highPriorityPoolRatio)

Allocate memory controllable RocksDB shared resources.

Parameters:

totalMemorySize - The total memory limit size.

writeBufferRatio - The ratio of total memory which is occupied by write buffer manager.

highPriorityPoolRatio - The high priority pool ratio of cache.

Returns:

memory controllable RocksDB shared resources.