Java Code Examples for org.apache.flink.runtime.state.CheckpointStreamFactory#createCheckpointStateOutputStream()

The following examples show how to use org.apache.flink.runtime.state.CheckpointStreamFactory#createCheckpointStateOutputStream() . 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: ChannelStateCheckpointWriter.java    From flink with Apache License 2.0 5 votes vote down vote up 
ChannelStateCheckpointWriter(
		CheckpointStartRequest startCheckpointItem,
		CheckpointStreamFactory streamFactory,
		ChannelStateSerializer serializer,
		RunnableWithException onComplete) throws Exception {
	this(
		startCheckpointItem.getCheckpointId(),
		startCheckpointItem.getTargetResult(),
		streamFactory.createCheckpointStateOutputStream(EXCLUSIVE),
		serializer,
		onComplete);
}
Example 2
Source File: RocksDBStateUploader.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
private StreamStateHandle uploadLocalFileToCheckpointFs(
	Path filePath,
	CheckpointStreamFactory checkpointStreamFactory,
	CloseableRegistry closeableRegistry) throws IOException {
	FSDataInputStream inputStream = null;
	CheckpointStreamFactory.CheckpointStateOutputStream outputStream = null;

	try {
		final byte[] buffer = new byte[READ_BUFFER_SIZE];

		FileSystem backupFileSystem = filePath.getFileSystem();
		inputStream = backupFileSystem.open(filePath);
		closeableRegistry.registerCloseable(inputStream);

		outputStream = checkpointStreamFactory
			.createCheckpointStateOutputStream(CheckpointedStateScope.SHARED);
		closeableRegistry.registerCloseable(outputStream);

		while (true) {
			int numBytes = inputStream.read(buffer);

			if (numBytes == -1) {
				break;
			}

			outputStream.write(buffer, 0, numBytes);
		}

		StreamStateHandle result = null;
		if (closeableRegistry.unregisterCloseable(outputStream)) {
			result = outputStream.closeAndGetHandle();
			outputStream = null;
		}
		return result;

	} finally {

		if (closeableRegistry.unregisterCloseable(inputStream)) {
			IOUtils.closeQuietly(inputStream);
		}

		if (closeableRegistry.unregisterCloseable(outputStream)) {
			IOUtils.closeQuietly(outputStream);
		}
	}
}
Example 3
Source File: RocksDBStateUploader.java    From flink with Apache License 2.0 4 votes vote down vote up 
private StreamStateHandle uploadLocalFileToCheckpointFs(
	Path filePath,
	CheckpointStreamFactory checkpointStreamFactory,
	CloseableRegistry closeableRegistry) throws IOException {
	FSDataInputStream inputStream = null;
	CheckpointStreamFactory.CheckpointStateOutputStream outputStream = null;

	try {
		final byte[] buffer = new byte[READ_BUFFER_SIZE];

		FileSystem backupFileSystem = filePath.getFileSystem();
		inputStream = backupFileSystem.open(filePath);
		closeableRegistry.registerCloseable(inputStream);

		outputStream = checkpointStreamFactory
			.createCheckpointStateOutputStream(CheckpointedStateScope.SHARED);
		closeableRegistry.registerCloseable(outputStream);

		while (true) {
			int numBytes = inputStream.read(buffer);

			if (numBytes == -1) {
				break;
			}

			outputStream.write(buffer, 0, numBytes);
		}

		StreamStateHandle result = null;
		if (closeableRegistry.unregisterCloseable(outputStream)) {
			result = outputStream.closeAndGetHandle();
			outputStream = null;
		}
		return result;

	} finally {

		if (closeableRegistry.unregisterCloseable(inputStream)) {
			IOUtils.closeQuietly(inputStream);
		}

		if (closeableRegistry.unregisterCloseable(outputStream)) {
			IOUtils.closeQuietly(outputStream);
		}
	}
}
Example 4
Source File: RocksDBStateUploader.java    From flink with Apache License 2.0 4 votes vote down vote up 
private StreamStateHandle uploadLocalFileToCheckpointFs(
	Path filePath,
	CheckpointStreamFactory checkpointStreamFactory,
	CloseableRegistry closeableRegistry) throws IOException {

	InputStream inputStream = null;
	CheckpointStreamFactory.CheckpointStateOutputStream outputStream = null;

	try {
		final byte[] buffer = new byte[READ_BUFFER_SIZE];

		inputStream = Files.newInputStream(filePath);
		closeableRegistry.registerCloseable(inputStream);

		outputStream = checkpointStreamFactory
			.createCheckpointStateOutputStream(CheckpointedStateScope.SHARED);
		closeableRegistry.registerCloseable(outputStream);

		while (true) {
			int numBytes = inputStream.read(buffer);

			if (numBytes == -1) {
				break;
			}

			outputStream.write(buffer, 0, numBytes);
		}

		StreamStateHandle result = null;
		if (closeableRegistry.unregisterCloseable(outputStream)) {
			result = outputStream.closeAndGetHandle();
			outputStream = null;
		}
		return result;

	} finally {

		if (closeableRegistry.unregisterCloseable(inputStream)) {
			IOUtils.closeQuietly(inputStream);
		}

		if (closeableRegistry.unregisterCloseable(outputStream)) {
			IOUtils.closeQuietly(outputStream);
		}
	}
}