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

Class RocksIncrementalSnapshotStrategy<K>

java.lang.Object

org.apache.flink.contrib.streaming.state.snapshot.RocksDBSnapshotStrategyBase<K,RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources>

org.apache.flink.contrib.streaming.state.snapshot.RocksIncrementalSnapshotStrategy<K>

Type Parameters:

K - type of the backend keys.

All Implemented Interfaces:

AutoCloseable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.runtime.state.SnapshotStrategy<org.apache.flink.runtime.state.KeyedStateHandle,RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources>

public class RocksIncrementalSnapshotStrategy<K>
extends RocksDBSnapshotStrategyBase<K,RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources>

Snapshot strategy for RocksDBKeyedStateBackend that is based on RocksDB's native checkpoints and creates incremental snapshots.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.contrib.streaming.state.snapshot.RocksDBSnapshotStrategyBase

RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources, RocksDBSnapshotStrategyBase.PreviousSnapshot, RocksDBSnapshotStrategyBase.RocksDBSnapshotOperation

Nested classes/interfaces inherited from interface org.apache.flink.runtime.state.SnapshotStrategy

org.apache.flink.runtime.state.SnapshotStrategy.SnapshotResultSupplier<S extends org.apache.flink.runtime.state.StateObject>

Field Summary

Fields inherited from class org.apache.flink.contrib.streaming.state.snapshot.RocksDBSnapshotStrategyBase

backendUID, db, EMPTY_PREVIOUS_SNAPSHOT, instanceBasePath, keyGroupPrefixBytes, keyGroupRange, keySerializer, kvStateInformation, localDirectoryName, localRecoveryConfig, rocksDBResourceGuard

Constructor Summary

Constructors

Constructor

Description

RocksIncrementalSnapshotStrategy(org.rocksdb.RocksDB db, org.apache.flink.util.ResourceGuard rocksDBResourceGuard, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, LinkedHashMap<String,RocksDBKeyedStateBackend.RocksDbKvStateInfo> kvStateInformation, org.apache.flink.runtime.state.KeyGroupRange keyGroupRange, int keyGroupPrefixBytes, org.apache.flink.runtime.state.LocalRecoveryConfig localRecoveryConfig, File instanceBasePath, UUID backendUID, SortedMap<Long,Collection<org.apache.flink.runtime.state.IncrementalKeyedStateHandle.HandleAndLocalPath>> uploadedStateHandles, RocksDBStateUploader rocksDBStateUploader, long lastCompletedCheckpointId)

Method Summary

Modifier and Type	Method	Description
org.apache.flink.runtime.state.SnapshotStrategy.SnapshotResultSupplier<org.apache.flink.runtime.state.KeyedStateHandle>	asyncSnapshot(RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources snapshotResources, long checkpointId, long timestamp, org.apache.flink.runtime.state.CheckpointStreamFactory checkpointStreamFactory, org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions)
void	close()
void	notifyCheckpointAborted(long abortedCheckpointId)
void	notifyCheckpointComplete(long completedCheckpointId)
protected RocksDBSnapshotStrategyBase.PreviousSnapshot	snapshotMetaData(long checkpointId, List<org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot> stateMetaInfoSnapshots)

Methods inherited from class org.apache.flink.contrib.streaming.state.snapshot.RocksDBSnapshotStrategyBase

cleanupIncompleteSnapshot, getDescription, materializeMetaData, prepareLocalSnapshotDirectory, syncPrepareResources

Methods inherited from class java.lang.Object

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

Constructor Detail

RocksIncrementalSnapshotStrategy

public RocksIncrementalSnapshotStrategy(@Nonnull
                                        org.rocksdb.RocksDB db,
                                        @Nonnull
                                        org.apache.flink.util.ResourceGuard rocksDBResourceGuard,
                                        @Nonnull
                                        org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                        @Nonnull
                                        LinkedHashMap<String,RocksDBKeyedStateBackend.RocksDbKvStateInfo> kvStateInformation,
                                        @Nonnull
                                        org.apache.flink.runtime.state.KeyGroupRange keyGroupRange,
                                        @Nonnegative
                                        int keyGroupPrefixBytes,
                                        @Nonnull
                                        org.apache.flink.runtime.state.LocalRecoveryConfig localRecoveryConfig,
                                        @Nonnull
                                        File instanceBasePath,
                                        @Nonnull
                                        UUID backendUID,
                                        @Nonnull
                                        SortedMap<Long,Collection<org.apache.flink.runtime.state.IncrementalKeyedStateHandle.HandleAndLocalPath>> uploadedStateHandles,
                                        @Nonnull
                                        RocksDBStateUploader rocksDBStateUploader,
                                        long lastCompletedCheckpointId)

Method Detail

asyncSnapshot

public org.apache.flink.runtime.state.SnapshotStrategy.SnapshotResultSupplier<org.apache.flink.runtime.state.KeyedStateHandle> asyncSnapshot(RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources snapshotResources,
                                                                                                                                             long checkpointId,
                                                                                                                                             long timestamp,
                                                                                                                                             @Nonnull
                                                                                                                                             org.apache.flink.runtime.state.CheckpointStreamFactory checkpointStreamFactory,
                                                                                                                                             @Nonnull
                                                                                                                                             org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions)

notifyCheckpointComplete

public void notifyCheckpointComplete(long completedCheckpointId)

notifyCheckpointAborted

public void notifyCheckpointAborted(long abortedCheckpointId)

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in class RocksDBSnapshotStrategyBase<K,RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources>

Throws:

IOException

snapshotMetaData

protected RocksDBSnapshotStrategyBase.PreviousSnapshot snapshotMetaData(long checkpointId,
                                                                        @Nonnull
                                                                        List<org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshot> stateMetaInfoSnapshots)

Specified by:

snapshotMetaData in class RocksDBSnapshotStrategyBase<K,RocksDBSnapshotStrategyBase.NativeRocksDBSnapshotResources>