Package org.apache.flink.contrib.streaming.state

Class RocksDBResourceContainer

java.lang.Object

org.apache.flink.contrib.streaming.state.RocksDBResourceContainer

All Implemented Interfaces:

AutoCloseable

public final class RocksDBResourceContainer
extends Object
implements AutoCloseable

The container for RocksDB resources, including predefined options, option factory and shared resource among instances.

This should be the only entrance for EmbeddedRocksDBStateBackend to get RocksDB options, and should be properly (and necessarily) closed to prevent resource leak.

Constructor Summary

Constructors

Constructor	Description
RocksDBResourceContainer()
RocksDBResourceContainer(org.apache.flink.configuration.ReadableConfig configuration, PredefinedOptions predefinedOptions, RocksDBOptionsFactory optionsFactory, org.apache.flink.runtime.memory.OpaqueMemoryResource<org.apache.flink.contrib.streaming.state.RocksDBSharedResources> sharedResources, File instanceBasePath, boolean enableStatistics)
RocksDBResourceContainer(PredefinedOptions predefinedOptions, RocksDBOptionsFactory optionsFactory)
RocksDBResourceContainer(PredefinedOptions predefinedOptions, RocksDBOptionsFactory optionsFactory, org.apache.flink.runtime.memory.OpaqueMemoryResource<org.apache.flink.contrib.streaming.state.RocksDBSharedResources> sharedResources)

Method Summary

Modifier and Type	Method	Description
void	close()
org.rocksdb.ColumnFamilyOptions	getColumnOptions()	Gets the RocksDB ColumnFamilyOptions to be used for all RocksDB instances.
org.rocksdb.DBOptions	getDbOptions()	Gets the RocksDB DBOptions to be used for RocksDB instances.
Duration	getPeriodicCompactionTime()	Gets the "getPeriodicCompactionTime" parameter from the configuration.
Long	getQueryTimeAfterNumEntries()	Gets the "queryTimeAfterNumEntries" parameter from the configuration.
org.rocksdb.ReadOptions	getReadOptions()	Gets the RocksDB ReadOptions to be used for read operations.
Long	getWriteBufferManagerCapacity()	Gets write buffer manager capacity.
org.rocksdb.WriteOptions	getWriteOptions()	Gets the RocksDB WriteOptions to be used for write operations.

Methods inherited from class java.lang.Object

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

Constructor Detail

RocksDBResourceContainer

@VisibleForTesting
public RocksDBResourceContainer()

RocksDBResourceContainer

@VisibleForTesting
public RocksDBResourceContainer(PredefinedOptions predefinedOptions,
                                @Nullable
                                RocksDBOptionsFactory optionsFactory)

RocksDBResourceContainer

@VisibleForTesting
public RocksDBResourceContainer(PredefinedOptions predefinedOptions,
                                @Nullable
                                RocksDBOptionsFactory optionsFactory,
                                @Nullable
                                org.apache.flink.runtime.memory.OpaqueMemoryResource<org.apache.flink.contrib.streaming.state.RocksDBSharedResources> sharedResources)

RocksDBResourceContainer

public RocksDBResourceContainer(org.apache.flink.configuration.ReadableConfig configuration,
                                PredefinedOptions predefinedOptions,
                                @Nullable
                                RocksDBOptionsFactory optionsFactory,
                                @Nullable
                                org.apache.flink.runtime.memory.OpaqueMemoryResource<org.apache.flink.contrib.streaming.state.RocksDBSharedResources> sharedResources,
                                @Nullable
                                File instanceBasePath,
                                boolean enableStatistics)

Method Detail

getDbOptions

public org.rocksdb.DBOptions getDbOptions()

Gets the RocksDB DBOptions to be used for RocksDB instances.

getWriteBufferManagerCapacity

public Long getWriteBufferManagerCapacity()

Gets write buffer manager capacity.

Returns:

the capacity of the write buffer manager, or null if write buffer manager is not enabled.

getQueryTimeAfterNumEntries

public Long getQueryTimeAfterNumEntries()

Gets the "queryTimeAfterNumEntries" parameter from the configuration.

getPeriodicCompactionTime

public Duration getPeriodicCompactionTime()

Gets the "getPeriodicCompactionTime" parameter from the configuration.

getColumnOptions

public org.rocksdb.ColumnFamilyOptions getColumnOptions()

Gets the RocksDB ColumnFamilyOptions to be used for all RocksDB instances.

getWriteOptions

public org.rocksdb.WriteOptions getWriteOptions()

Gets the RocksDB WriteOptions to be used for write operations.

getReadOptions

public org.rocksdb.ReadOptions getReadOptions()

Gets the RocksDB ReadOptions to be used for read operations.

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception