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

Class RocksIncrementalSnapshotStrategy<K>

java.lang.Object

org.apache.flink.runtime.state.AbstractSnapshotStrategy<org.apache.flink.runtime.state.KeyedStateHandle>

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

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

Type Parameters:

K - type of the backend keys.

All Implemented Interfaces:

org.apache.flink.runtime.state.CheckpointListener, org.apache.flink.runtime.state.SnapshotStrategy<org.apache.flink.runtime.state.SnapshotResult<org.apache.flink.runtime.state.KeyedStateHandle>>

public class RocksIncrementalSnapshotStrategy<K>
extends RocksDBSnapshotStrategyBase<K>

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

Field Summary

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

cancelStreamRegistry, db, keyGroupPrefixBytes, keyGroupRange, keySerializer, kvStateInformation, localRecoveryConfig, rocksDBResourceGuard

Fields inherited from class org.apache.flink.runtime.state.AbstractSnapshotStrategy

description

Constructor Summary

Constructors

Constructor and 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, org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry, File instanceBasePath, UUID backendUID, SortedMap<Long,Set<org.apache.flink.runtime.state.StateHandleID>> materializedSstFiles, long lastCompletedCheckpointId, int numberOfTransferingThreads)

Method Summary

Modifier and Type	Method and Description
protected RunnableFuture<org.apache.flink.runtime.state.SnapshotResult<org.apache.flink.runtime.state.KeyedStateHandle>>	doSnapshot(long checkpointId, long checkpointTimestamp, org.apache.flink.runtime.state.CheckpointStreamFactory checkpointStreamFactory, org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions) This method implements the concrete snapshot logic for a non-empty state.
void	notifyCheckpointAborted(long abortedCheckpointId)
void	notifyCheckpointComplete(long completedCheckpointId)

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

snapshot

Methods inherited from class org.apache.flink.runtime.state.AbstractSnapshotStrategy

logAsyncCompleted, logSyncCompleted, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, 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
                                        org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry,
                                        @Nonnull
                                        File instanceBasePath,
                                        @Nonnull
                                        UUID backendUID,
                                        @Nonnull
                                        SortedMap<Long,Set<org.apache.flink.runtime.state.StateHandleID>> materializedSstFiles,
                                        long lastCompletedCheckpointId,
                                        int numberOfTransferingThreads)

Method Detail

doSnapshot

@Nonnull
protected RunnableFuture<org.apache.flink.runtime.state.SnapshotResult<org.apache.flink.runtime.state.KeyedStateHandle>> doSnapshot(long checkpointId,
                                                                                                                                             long checkpointTimestamp,
                                                                                                                                             @Nonnull
                                                                                                                                             org.apache.flink.runtime.state.CheckpointStreamFactory checkpointStreamFactory,
                                                                                                                                             @Nonnull
                                                                                                                                             org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions)
                                                                                                                                      throws Exception

Description copied from class: RocksDBSnapshotStrategyBase

This method implements the concrete snapshot logic for a non-empty state.

Specified by:

doSnapshot in class RocksDBSnapshotStrategyBase<K>

Throws:

Exception

notifyCheckpointComplete

public void notifyCheckpointComplete(long completedCheckpointId)

notifyCheckpointAborted

public void notifyCheckpointAborted(long abortedCheckpointId)