org.apache.flink.contrib.streaming.state.RocksDBStateDownloader Java Examples

The following examples show how to use org.apache.flink.contrib.streaming.state.RocksDBStateDownloader. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: RocksDBIncrementalRestoreOperation.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
private IncrementalLocalKeyedStateHandle transferRemoteStateToLocalDirectory(
	Path temporaryRestoreInstancePath,
	IncrementalRemoteKeyedStateHandle restoreStateHandle) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader = new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	// since we transferred all remote state to a local directory, we can use the same code as for
	// local recovery.
	return new IncrementalLocalKeyedStateHandle(
		restoreStateHandle.getBackendIdentifier(),
		restoreStateHandle.getCheckpointId(),
		new DirectoryStateHandle(temporaryRestoreInstancePath),
		restoreStateHandle.getKeyGroupRange(),
		restoreStateHandle.getMetaStateHandle(),
		restoreStateHandle.getSharedState().keySet());
}
Example #2
Source File: RocksDBIncrementalRestoreOperation.java    From flink with Apache License 2.0 6 votes vote down vote up 
private IncrementalLocalKeyedStateHandle transferRemoteStateToLocalDirectory(
	Path temporaryRestoreInstancePath,
	IncrementalRemoteKeyedStateHandle restoreStateHandle) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader = new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	// since we transferred all remote state to a local directory, we can use the same code as for
	// local recovery.
	return new IncrementalLocalKeyedStateHandle(
		restoreStateHandle.getBackendIdentifier(),
		restoreStateHandle.getCheckpointId(),
		new DirectoryStateHandle(temporaryRestoreInstancePath),
		restoreStateHandle.getKeyGroupRange(),
		restoreStateHandle.getMetaStateHandle(),
		restoreStateHandle.getSharedState().keySet());
}
Example #3
Source File: RocksDBIncrementalRestoreOperation.java    From flink with Apache License 2.0 6 votes vote down vote up 
private IncrementalLocalKeyedStateHandle transferRemoteStateToLocalDirectory(
	Path temporaryRestoreInstancePath,
	IncrementalRemoteKeyedStateHandle restoreStateHandle) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader = new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	// since we transferred all remote state to a local directory, we can use the same code as for
	// local recovery.
	return new IncrementalLocalKeyedStateHandle(
		restoreStateHandle.getBackendIdentifier(),
		restoreStateHandle.getCheckpointId(),
		new DirectoryStateHandle(temporaryRestoreInstancePath),
		restoreStateHandle.getKeyGroupRange(),
		restoreStateHandle.getMetaStateHandle(),
		restoreStateHandle.getSharedState().keySet());
}
Example #4
Source File: RocksDBIncrementalRestoreOperation.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
private RestoredDBInstance restoreDBInstanceFromStateHandle(
	IncrementalRemoteKeyedStateHandle restoreStateHandle,
	Path temporaryRestoreInstancePath) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader =
			new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(restoreStateHandle.getMetaStateHandle());
	// read meta data
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();

	List<ColumnFamilyDescriptor> columnFamilyDescriptors =
		createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, false);

	List<ColumnFamilyHandle> columnFamilyHandles =
		new ArrayList<>(stateMetaInfoSnapshots.size() + 1);

	RocksDB restoreDb = RocksDBOperationUtils.openDB(
		temporaryRestoreInstancePath.getPath(),
		columnFamilyDescriptors,
		columnFamilyHandles,
		RocksDBOperationUtils.createColumnFamilyOptions(columnFamilyOptionsFactory, "default"),
		dbOptions);

	return new RestoredDBInstance(restoreDb, columnFamilyHandles, columnFamilyDescriptors, stateMetaInfoSnapshots);
}
Example #5
Source File: RocksDBIncrementalRestoreOperation.java    From flink with Apache License 2.0 5 votes vote down vote up 
private RestoredDBInstance restoreDBInstanceFromStateHandle(
	IncrementalRemoteKeyedStateHandle restoreStateHandle,
	Path temporaryRestoreInstancePath) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader =
			new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(restoreStateHandle.getMetaStateHandle());
	// read meta data
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();

	List<ColumnFamilyDescriptor> columnFamilyDescriptors =
		createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, false);

	List<ColumnFamilyHandle> columnFamilyHandles =
		new ArrayList<>(stateMetaInfoSnapshots.size() + 1);

	RocksDB restoreDb = RocksDBOperationUtils.openDB(
		temporaryRestoreInstancePath.getPath(),
		columnFamilyDescriptors,
		columnFamilyHandles,
		RocksDBOperationUtils.createColumnFamilyOptions(columnFamilyOptionsFactory, "default"),
		dbOptions);

	return new RestoredDBInstance(restoreDb, columnFamilyHandles, columnFamilyDescriptors, stateMetaInfoSnapshots);
}
Example #6
Source File: RocksDBIncrementalRestoreOperation.java    From flink with Apache License 2.0 5 votes vote down vote up 
private RestoredDBInstance restoreDBInstanceFromStateHandle(
	IncrementalRemoteKeyedStateHandle restoreStateHandle,
	Path temporaryRestoreInstancePath) throws Exception {

	try (RocksDBStateDownloader rocksDBStateDownloader =
			new RocksDBStateDownloader(numberOfTransferringThreads)) {
		rocksDBStateDownloader.transferAllStateDataToDirectory(
			restoreStateHandle,
			temporaryRestoreInstancePath,
			cancelStreamRegistry);
	}

	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(restoreStateHandle.getMetaStateHandle());
	// read meta data
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();

	List<ColumnFamilyDescriptor> columnFamilyDescriptors =
		createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, false);

	List<ColumnFamilyHandle> columnFamilyHandles =
		new ArrayList<>(stateMetaInfoSnapshots.size() + 1);

	RocksDB restoreDb = RocksDBOperationUtils.openDB(
		temporaryRestoreInstancePath.toString(),
		columnFamilyDescriptors,
		columnFamilyHandles,
		RocksDBOperationUtils.createColumnFamilyOptions(columnFamilyOptionsFactory, "default"),
		dbOptions);

	return new RestoredDBInstance(restoreDb, columnFamilyHandles, columnFamilyDescriptors, stateMetaInfoSnapshots);
}