org.apache.flink.runtime.state.IncrementalLocalKeyedStateHandle Java Examples

The following examples show how to use org.apache.flink.runtime.state.IncrementalLocalKeyedStateHandle. 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

/**
 * Recovery from a single remote incremental state without rescaling.
 */
private void restoreWithoutRescaling(KeyedStateHandle keyedStateHandle) throws Exception {
	if (keyedStateHandle instanceof IncrementalRemoteKeyedStateHandle) {
		IncrementalRemoteKeyedStateHandle incrementalRemoteKeyedStateHandle =
			(IncrementalRemoteKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalRemoteKeyedStateHandle);
		restoreFromRemoteState(incrementalRemoteKeyedStateHandle);
	} else if (keyedStateHandle instanceof IncrementalLocalKeyedStateHandle) {
		IncrementalLocalKeyedStateHandle incrementalLocalKeyedStateHandle =
			(IncrementalLocalKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalLocalKeyedStateHandle);
		restoreFromLocalState(incrementalLocalKeyedStateHandle);
	} else {
		throw new BackendBuildingException("Unexpected state handle type, " +
			"expected " + IncrementalRemoteKeyedStateHandle.class + " or " + IncrementalLocalKeyedStateHandle.class +
			", but found " + keyedStateHandle.getClass());
	}
}

Example #2

Source File: RocksDBIncrementalRestoreOperation.java From Flink-CEPplus with Apache License 2.0

6 votes

private void restoreFromLocalState(IncrementalLocalKeyedStateHandle localKeyedStateHandle) throws Exception {
	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(localKeyedStateHandle.getMetaDataState());
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();
	columnFamilyDescriptors = createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, true);
	columnFamilyHandles = new ArrayList<>(columnFamilyDescriptors.size() + 1);

	Path restoreSourcePath = localKeyedStateHandle.getDirectoryStateHandle().getDirectory();

	LOG.debug("Restoring keyed backend uid in operator {} from incremental snapshot to {}.",
		operatorIdentifier, backendUID);

	if (!instanceRocksDBPath.mkdirs()) {
		String errMsg = "Could not create RocksDB data directory: " + instanceBasePath.getAbsolutePath();
		LOG.error(errMsg);
		throw new IOException(errMsg);
	}

	restoreInstanceDirectoryFromPath(restoreSourcePath, dbPath);

	openDB();

	registerColumnFamilyHandles(stateMetaInfoSnapshots);
}

Example #3

Source File: RocksDBIncrementalRestoreOperation.java From Flink-CEPplus with Apache License 2.0

6 votes

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 with Apache License 2.0

6 votes

/**
 * Recovery from a single remote incremental state without rescaling.
 */
private void restoreWithoutRescaling(KeyedStateHandle keyedStateHandle) throws Exception {
	if (keyedStateHandle instanceof IncrementalRemoteKeyedStateHandle) {
		IncrementalRemoteKeyedStateHandle incrementalRemoteKeyedStateHandle =
			(IncrementalRemoteKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalRemoteKeyedStateHandle);
		restoreFromRemoteState(incrementalRemoteKeyedStateHandle);
	} else if (keyedStateHandle instanceof IncrementalLocalKeyedStateHandle) {
		IncrementalLocalKeyedStateHandle incrementalLocalKeyedStateHandle =
			(IncrementalLocalKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalLocalKeyedStateHandle);
		restoreFromLocalState(incrementalLocalKeyedStateHandle);
	} else {
		throw new BackendBuildingException("Unexpected state handle type, " +
			"expected " + IncrementalRemoteKeyedStateHandle.class + " or " + IncrementalLocalKeyedStateHandle.class +
			", but found " + keyedStateHandle.getClass());
	}
}

Example #5

Source File: RocksDBIncrementalRestoreOperation.java From flink with Apache License 2.0

6 votes

private void restoreFromLocalState(IncrementalLocalKeyedStateHandle localKeyedStateHandle) throws Exception {
	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(localKeyedStateHandle.getMetaDataState());
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();
	columnFamilyDescriptors = createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, true);
	columnFamilyHandles = new ArrayList<>(columnFamilyDescriptors.size() + 1);

	Path restoreSourcePath = localKeyedStateHandle.getDirectoryStateHandle().getDirectory();

	LOG.debug("Restoring keyed backend uid in operator {} from incremental snapshot to {}.",
		operatorIdentifier, backendUID);

	if (!instanceRocksDBPath.mkdirs()) {
		String errMsg = "Could not create RocksDB data directory: " + instanceBasePath.getAbsolutePath();
		LOG.error(errMsg);
		throw new IOException(errMsg);
	}

	restoreInstanceDirectoryFromPath(restoreSourcePath, dbPath);

	openDB();

	registerColumnFamilyHandles(stateMetaInfoSnapshots);
}

Example #6

Source File: RocksDBIncrementalRestoreOperation.java From flink with Apache License 2.0

6 votes

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 #7

Source File: RocksDBIncrementalRestoreOperation.java From flink with Apache License 2.0

6 votes

/**
 * Recovery from a single remote incremental state without rescaling.
 */
private void restoreWithoutRescaling(KeyedStateHandle keyedStateHandle) throws Exception {
	if (keyedStateHandle instanceof IncrementalRemoteKeyedStateHandle) {
		IncrementalRemoteKeyedStateHandle incrementalRemoteKeyedStateHandle =
			(IncrementalRemoteKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalRemoteKeyedStateHandle);
		restoreFromRemoteState(incrementalRemoteKeyedStateHandle);
	} else if (keyedStateHandle instanceof IncrementalLocalKeyedStateHandle) {
		IncrementalLocalKeyedStateHandle incrementalLocalKeyedStateHandle =
			(IncrementalLocalKeyedStateHandle) keyedStateHandle;
		restorePreviousIncrementalFilesStatus(incrementalLocalKeyedStateHandle);
		restoreFromLocalState(incrementalLocalKeyedStateHandle);
	} else {
		throw new BackendBuildingException("Unexpected state handle type, " +
			"expected " + IncrementalRemoteKeyedStateHandle.class + " or " + IncrementalLocalKeyedStateHandle.class +
			", but found " + keyedStateHandle.getClass());
	}
}

Example #8

Source File: RocksDBIncrementalRestoreOperation.java From flink with Apache License 2.0

6 votes

private void restoreFromLocalState(IncrementalLocalKeyedStateHandle localKeyedStateHandle) throws Exception {
	KeyedBackendSerializationProxy<K> serializationProxy = readMetaData(localKeyedStateHandle.getMetaDataState());
	List<StateMetaInfoSnapshot> stateMetaInfoSnapshots = serializationProxy.getStateMetaInfoSnapshots();
	columnFamilyDescriptors = createAndRegisterColumnFamilyDescriptors(stateMetaInfoSnapshots, true);
	columnFamilyHandles = new ArrayList<>(columnFamilyDescriptors.size() + 1);

	Path restoreSourcePath = localKeyedStateHandle.getDirectoryStateHandle().getDirectory();

	LOG.debug("Restoring keyed backend uid in operator {} from incremental snapshot to {}.",
		operatorIdentifier, backendUID);

	if (!instanceRocksDBPath.mkdirs()) {
		String errMsg = "Could not create RocksDB data directory: " + instanceBasePath.getAbsolutePath();
		LOG.error(errMsg);
		throw new IOException(errMsg);
	}

	restoreInstanceDirectoryFromPath(restoreSourcePath, dbPath);

	openDB();

	registerColumnFamilyHandles(stateMetaInfoSnapshots);
}

Example #9

Source File: RocksDBIncrementalRestoreOperation.java From flink with Apache License 2.0

6 votes

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 #10

Source File: RocksIncrementalSnapshotStrategy.java From Flink-CEPplus with Apache License 2.0

4 votes

@Override
protected SnapshotResult<KeyedStateHandle> callInternal() throws Exception {

	boolean completed = false;

	// Handle to the meta data file
	SnapshotResult<StreamStateHandle> metaStateHandle = null;
	// Handles to new sst files since the last completed checkpoint will go here
	final Map<StateHandleID, StreamStateHandle> sstFiles = new HashMap<>();
	// Handles to the misc files in the current snapshot will go here
	final Map<StateHandleID, StreamStateHandle> miscFiles = new HashMap<>();

	try {

		metaStateHandle = materializeMetaData();

		// Sanity checks - they should never fail
		Preconditions.checkNotNull(metaStateHandle, "Metadata was not properly created.");
		Preconditions.checkNotNull(metaStateHandle.getJobManagerOwnedSnapshot(),
			"Metadata for job manager was not properly created.");

		uploadSstFiles(sstFiles, miscFiles);

		synchronized (materializedSstFiles) {
			materializedSstFiles.put(checkpointId, sstFiles.keySet());
		}

		final IncrementalRemoteKeyedStateHandle jmIncrementalKeyedStateHandle =
			new IncrementalRemoteKeyedStateHandle(
				backendUID,
				keyGroupRange,
				checkpointId,
				sstFiles,
				miscFiles,
				metaStateHandle.getJobManagerOwnedSnapshot());

		final DirectoryStateHandle directoryStateHandle = localBackupDirectory.completeSnapshotAndGetHandle();
		final SnapshotResult<KeyedStateHandle> snapshotResult;
		if (directoryStateHandle != null && metaStateHandle.getTaskLocalSnapshot() != null) {

			IncrementalLocalKeyedStateHandle localDirKeyedStateHandle =
				new IncrementalLocalKeyedStateHandle(
					backendUID,
					checkpointId,
					directoryStateHandle,
					keyGroupRange,
					metaStateHandle.getTaskLocalSnapshot(),
					sstFiles.keySet());

			snapshotResult = SnapshotResult.withLocalState(jmIncrementalKeyedStateHandle, localDirKeyedStateHandle);
		} else {
			snapshotResult = SnapshotResult.of(jmIncrementalKeyedStateHandle);
		}

		completed = true;

		return snapshotResult;
	} finally {
		if (!completed) {
			final List<StateObject> statesToDiscard =
				new ArrayList<>(1 + miscFiles.size() + sstFiles.size());
			statesToDiscard.add(metaStateHandle);
			statesToDiscard.addAll(miscFiles.values());
			statesToDiscard.addAll(sstFiles.values());
			cleanupIncompleteSnapshot(statesToDiscard);
		}
	}
}

Example #11

Source File: RocksIncrementalSnapshotStrategy.java From flink with Apache License 2.0

4 votes

@Override
protected SnapshotResult<KeyedStateHandle> callInternal() throws Exception {

	boolean completed = false;

	// Handle to the meta data file
	SnapshotResult<StreamStateHandle> metaStateHandle = null;
	// Handles to new sst files since the last completed checkpoint will go here
	final Map<StateHandleID, StreamStateHandle> sstFiles = new HashMap<>();
	// Handles to the misc files in the current snapshot will go here
	final Map<StateHandleID, StreamStateHandle> miscFiles = new HashMap<>();

	try {

		metaStateHandle = materializeMetaData();

		// Sanity checks - they should never fail
		Preconditions.checkNotNull(metaStateHandle, "Metadata was not properly created.");
		Preconditions.checkNotNull(metaStateHandle.getJobManagerOwnedSnapshot(),
			"Metadata for job manager was not properly created.");

		uploadSstFiles(sstFiles, miscFiles);

		synchronized (materializedSstFiles) {
			materializedSstFiles.put(checkpointId, sstFiles.keySet());
		}

		final IncrementalRemoteKeyedStateHandle jmIncrementalKeyedStateHandle =
			new IncrementalRemoteKeyedStateHandle(
				backendUID,
				keyGroupRange,
				checkpointId,
				sstFiles,
				miscFiles,
				metaStateHandle.getJobManagerOwnedSnapshot());

		final DirectoryStateHandle directoryStateHandle = localBackupDirectory.completeSnapshotAndGetHandle();
		final SnapshotResult<KeyedStateHandle> snapshotResult;
		if (directoryStateHandle != null && metaStateHandle.getTaskLocalSnapshot() != null) {

			IncrementalLocalKeyedStateHandle localDirKeyedStateHandle =
				new IncrementalLocalKeyedStateHandle(
					backendUID,
					checkpointId,
					directoryStateHandle,
					keyGroupRange,
					metaStateHandle.getTaskLocalSnapshot(),
					sstFiles.keySet());

			snapshotResult = SnapshotResult.withLocalState(jmIncrementalKeyedStateHandle, localDirKeyedStateHandle);
		} else {
			snapshotResult = SnapshotResult.of(jmIncrementalKeyedStateHandle);
		}

		completed = true;

		return snapshotResult;
	} finally {
		if (!completed) {
			final List<StateObject> statesToDiscard =
				new ArrayList<>(1 + miscFiles.size() + sstFiles.size());
			statesToDiscard.add(metaStateHandle);
			statesToDiscard.addAll(miscFiles.values());
			statesToDiscard.addAll(sstFiles.values());
			cleanupIncompleteSnapshot(statesToDiscard);
		}
	}
}

Example #12

Source File: RocksIncrementalSnapshotStrategy.java From flink with Apache License 2.0

4 votes

@Override
protected SnapshotResult<KeyedStateHandle> callInternal() throws Exception {

	boolean completed = false;

	// Handle to the meta data file
	SnapshotResult<StreamStateHandle> metaStateHandle = null;
	// Handles to new sst files since the last completed checkpoint will go here
	final Map<StateHandleID, StreamStateHandle> sstFiles = new HashMap<>();
	// Handles to the misc files in the current snapshot will go here
	final Map<StateHandleID, StreamStateHandle> miscFiles = new HashMap<>();

	try {

		metaStateHandle = materializeMetaData();

		// Sanity checks - they should never fail
		Preconditions.checkNotNull(metaStateHandle, "Metadata was not properly created.");
		Preconditions.checkNotNull(metaStateHandle.getJobManagerOwnedSnapshot(),
			"Metadata for job manager was not properly created.");

		uploadSstFiles(sstFiles, miscFiles);

		synchronized (materializedSstFiles) {
			materializedSstFiles.put(checkpointId, sstFiles.keySet());
		}

		final IncrementalRemoteKeyedStateHandle jmIncrementalKeyedStateHandle =
			new IncrementalRemoteKeyedStateHandle(
				backendUID,
				keyGroupRange,
				checkpointId,
				sstFiles,
				miscFiles,
				metaStateHandle.getJobManagerOwnedSnapshot());

		final DirectoryStateHandle directoryStateHandle = localBackupDirectory.completeSnapshotAndGetHandle();
		final SnapshotResult<KeyedStateHandle> snapshotResult;
		if (directoryStateHandle != null && metaStateHandle.getTaskLocalSnapshot() != null) {

			IncrementalLocalKeyedStateHandle localDirKeyedStateHandle =
				new IncrementalLocalKeyedStateHandle(
					backendUID,
					checkpointId,
					directoryStateHandle,
					keyGroupRange,
					metaStateHandle.getTaskLocalSnapshot(),
					sstFiles.keySet());

			snapshotResult = SnapshotResult.withLocalState(jmIncrementalKeyedStateHandle, localDirKeyedStateHandle);
		} else {
			snapshotResult = SnapshotResult.of(jmIncrementalKeyedStateHandle);
		}

		completed = true;

		return snapshotResult;
	} finally {
		if (!completed) {
			final List<StateObject> statesToDiscard =
				new ArrayList<>(1 + miscFiles.size() + sstFiles.size());
			statesToDiscard.add(metaStateHandle);
			statesToDiscard.addAll(miscFiles.values());
			statesToDiscard.addAll(sstFiles.values());
			cleanupIncompleteSnapshot(statesToDiscard);
		}
	}
}