Java Code Examples for org.apache.flink.runtime.state.filesystem.FileBasedStateOutputStream

The following examples show how to use org.apache.flink.runtime.state.filesystem.FileBasedStateOutputStream. These examples are extracted from open source projects. 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
@Nonnull
static CheckpointStreamWithResultProvider createDuplicatingStream(
	@Nonnegative long checkpointId,
	@Nonnull CheckpointedStateScope checkpointedStateScope,
	@Nonnull CheckpointStreamFactory primaryStreamFactory,
	@Nonnull LocalRecoveryDirectoryProvider secondaryStreamDirProvider) throws IOException {

	CheckpointStreamFactory.CheckpointStateOutputStream primaryOut =
		primaryStreamFactory.createCheckpointStateOutputStream(checkpointedStateScope);

	try {
		File outFile = new File(
			secondaryStreamDirProvider.subtaskSpecificCheckpointDirectory(checkpointId),
			String.valueOf(UUID.randomUUID()));
		Path outPath = new Path(outFile.toURI());

		CheckpointStreamFactory.CheckpointStateOutputStream secondaryOut =
			new FileBasedStateOutputStream(outPath.getFileSystem(), outPath);

		return new CheckpointStreamWithResultProvider.PrimaryAndSecondaryStream(primaryOut, secondaryOut);
	} catch (IOException secondaryEx) {
		LOG.warn("Exception when opening secondary/local checkpoint output stream. " +
			"Continue only with the primary stream.", secondaryEx);
	}

	return new CheckpointStreamWithResultProvider.PrimaryStreamOnly(primaryOut);
}
 
Example 2
Source Project: flink   Source File: CheckpointStreamWithResultProvider.java    License: Apache License 2.0 5 votes vote down vote up
@Nonnull
static CheckpointStreamWithResultProvider createDuplicatingStream(
	@Nonnegative long checkpointId,
	@Nonnull CheckpointedStateScope checkpointedStateScope,
	@Nonnull CheckpointStreamFactory primaryStreamFactory,
	@Nonnull LocalRecoveryDirectoryProvider secondaryStreamDirProvider) throws IOException {

	CheckpointStreamFactory.CheckpointStateOutputStream primaryOut =
		primaryStreamFactory.createCheckpointStateOutputStream(checkpointedStateScope);

	try {
		File outFile = new File(
			secondaryStreamDirProvider.subtaskSpecificCheckpointDirectory(checkpointId),
			String.valueOf(UUID.randomUUID()));
		Path outPath = new Path(outFile.toURI());

		CheckpointStreamFactory.CheckpointStateOutputStream secondaryOut =
			new FileBasedStateOutputStream(outPath.getFileSystem(), outPath);

		return new CheckpointStreamWithResultProvider.PrimaryAndSecondaryStream(primaryOut, secondaryOut);
	} catch (IOException secondaryEx) {
		LOG.warn("Exception when opening secondary/local checkpoint output stream. " +
			"Continue only with the primary stream.", secondaryEx);
	}

	return new CheckpointStreamWithResultProvider.PrimaryStreamOnly(primaryOut);
}
 
Example 3
Source Project: bravo   Source File: OperatorStateWriter.java    License: Apache License 2.0 5 votes vote down vote up
private StateObjectCollection<OperatorStateHandle> transformSubtaskOpState(Path outDir, Integer subtaskId,
		StateObjectCollection<OperatorStateHandle> baseState) {

	if (transformer == null) {
		return baseState;
	}

	StateObjectCollection<OperatorStateHandle> opHandle = baseState;
	try (OperatorStateBackend opBackend = OperatorStateReader
			.restoreOperatorStateBackend(opHandle)) {

		transformer.accept(subtaskId, opBackend);

		OperatorStateHandle newSnapshot = opBackend
				.snapshot(checkpointId, System.currentTimeMillis(), new CheckpointStreamFactory() {
					@Override
					public CheckpointStateOutputStream createCheckpointStateOutputStream(
							CheckpointedStateScope scope)
							throws IOException {
						return new FileBasedStateOutputStream(outDir.getFileSystem(),
								new Path(outDir, String.valueOf(UUID.randomUUID())));
					}
				}, null).get().getJobManagerOwnedSnapshot();
		return new StateObjectCollection<>(Lists.newArrayList(newSnapshot));
	} catch (Exception e) {
		throw new RuntimeException(e);
	}
}
 
Example 4
Source Project: flink   Source File: CheckpointStreamWithResultProvider.java    License: Apache License 2.0 5 votes vote down vote up
@Nonnull
static CheckpointStreamWithResultProvider createDuplicatingStream(
	@Nonnegative long checkpointId,
	@Nonnull CheckpointedStateScope checkpointedStateScope,
	@Nonnull CheckpointStreamFactory primaryStreamFactory,
	@Nonnull LocalRecoveryDirectoryProvider secondaryStreamDirProvider) throws IOException {

	CheckpointStreamFactory.CheckpointStateOutputStream primaryOut =
		primaryStreamFactory.createCheckpointStateOutputStream(checkpointedStateScope);

	try {
		File outFile = new File(
			secondaryStreamDirProvider.subtaskSpecificCheckpointDirectory(checkpointId),
			String.valueOf(UUID.randomUUID()));
		Path outPath = new Path(outFile.toURI());

		CheckpointStreamFactory.CheckpointStateOutputStream secondaryOut =
			new FileBasedStateOutputStream(outPath.getFileSystem(), outPath);

		return new CheckpointStreamWithResultProvider.PrimaryAndSecondaryStream(primaryOut, secondaryOut);
	} catch (IOException secondaryEx) {
		LOG.warn("Exception when opening secondary/local checkpoint output stream. " +
			"Continue only with the primary stream.", secondaryEx);
	}

	return new CheckpointStreamWithResultProvider.PrimaryStreamOnly(primaryOut);
}