Java Code Examples for org.apache.flink.core.io.SimpleVersionedSerializer#deserialize()

The following examples show how to use org.apache.flink.core.io.SimpleVersionedSerializer#deserialize() . 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: MasterHooks.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
private static <T> T deserializeState(MasterState state, MasterTriggerRestoreHook<?> hook) throws FlinkException {
	@SuppressWarnings("unchecked")
	final MasterTriggerRestoreHook<T> typedHook = (MasterTriggerRestoreHook<T>) hook;
	final String id = hook.getIdentifier();

	try {
		final SimpleVersionedSerializer<T> deserializer = typedHook.createCheckpointDataSerializer();
		if (deserializer == null) {
			throw new FlinkException("null serializer for state of hook " + hook.getIdentifier());
		}

		return deserializer.deserialize(state.version(), state.bytes());
	}
	catch (Throwable t) {
		throw new FlinkException("Cannot deserialize state for master hook '" + id + '\'', t);
	}
}
Example 2
Source File: MasterHooks.java    From flink with Apache License 2.0 6 votes vote down vote up 
private static <T> T deserializeState(MasterState state, MasterTriggerRestoreHook<?> hook) throws FlinkException {
	@SuppressWarnings("unchecked")
	final MasterTriggerRestoreHook<T> typedHook = (MasterTriggerRestoreHook<T>) hook;
	final String id = hook.getIdentifier();

	try {
		final SimpleVersionedSerializer<T> deserializer = typedHook.createCheckpointDataSerializer();
		if (deserializer == null) {
			throw new FlinkException("null serializer for state of hook " + hook.getIdentifier());
		}

		return deserializer.deserialize(state.version(), state.bytes());
	}
	catch (Throwable t) {
		throw new FlinkException("Cannot deserialize state for master hook '" + id + '\'', t);
	}
}
Example 3
Source File: MasterHooks.java    From flink with Apache License 2.0 6 votes vote down vote up 
private static <T> T deserializeState(MasterState state, MasterTriggerRestoreHook<?> hook) throws FlinkException {
	@SuppressWarnings("unchecked")
	final MasterTriggerRestoreHook<T> typedHook = (MasterTriggerRestoreHook<T>) hook;
	final String id = hook.getIdentifier();

	try {
		final SimpleVersionedSerializer<T> deserializer = typedHook.createCheckpointDataSerializer();
		if (deserializer == null) {
			throw new FlinkException("null serializer for state of hook " + hook.getIdentifier());
		}

		return deserializer.deserialize(state.version(), state.bytes());
	}
	catch (Throwable t) {
		throw new FlinkException("Cannot deserialize state for master hook '" + id + '\'', t);
	}
}
Example 4
Source File: AbstractRecoverableWriterTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path testDir = getBasePathForTest();
	final Path path = new Path(testDir, "part-0");

	final RecoverableWriter initWriter = getNewFileSystemWriter();

	final RecoverableWriter.CommitRecoverable recoverable;
	try (final RecoverableFsDataOutputStream stream = initWriter.open(path)) {
		stream.write(testData1.getBytes(StandardCharsets.UTF_8));

		stream.persist();
		stream.persist();

		// and write some more data
		stream.write(testData2.getBytes(StandardCharsets.UTF_8));

		recoverable = stream.closeForCommit().getRecoverable();
	}

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getNewFileSystemWriter();
	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Map<Path, String> files = getFileContentByPath(testDir);
	Assert.assertEquals(1L, files.size());

	for (Map.Entry<Path, String> fileContents : files.entrySet()) {
		Assert.assertEquals("part-0", fileContents.getKey().getName());
		Assert.assertEquals(testData1 + testData2, fileContents.getValue());
	}
}
Example 5
Source File: HadoopS3RecoverableWriterITCase.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
private void testResumeAfterMultiplePersist(
		final String persistName,
		final String expectedFinalContents,
		final String firstItemToWrite,
		final String secondItemToWrite,
		final String thirdItemToWrite) throws Exception {

	final Path path = new Path(basePathForTest, "part-0");
	final RecoverableWriter initWriter = getRecoverableWriter();

	final Map<String, RecoverableWriter.ResumeRecoverable> recoverables = new HashMap<>(4);
	try (final RecoverableFsDataOutputStream stream = initWriter.open(path)) {
		recoverables.put(INIT_EMPTY_PERSIST, stream.persist());

		stream.write(bytesOf(firstItemToWrite));

		recoverables.put(INTERM_WITH_STATE_PERSIST, stream.persist());
		recoverables.put(INTERM_WITH_NO_ADDITIONAL_STATE_PERSIST, stream.persist());

		// and write some more data
		stream.write(bytesOf(secondItemToWrite));

		recoverables.put(FINAL_WITH_EXTRA_STATE, stream.persist());
	}

	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> serializer = initWriter.getResumeRecoverableSerializer();
	final byte[] serializedRecoverable = serializer.serialize(recoverables.get(persistName));

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();
	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> deserializer = newWriter.getResumeRecoverableSerializer();
	final RecoverableWriter.ResumeRecoverable recoveredRecoverable =
			deserializer.deserialize(serializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream recoveredStream = newWriter.recover(recoveredRecoverable);
	recoveredStream.write(bytesOf(thirdItemToWrite));
	recoveredStream.closeForCommit().commit();

	Assert.assertEquals(expectedFinalContents, getContentsOfFile(path));
}
Example 6
Source File: HadoopS3RecoverableWriterITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
private void testResumeAfterMultiplePersist(
		final String persistName,
		final String expectedFinalContents,
		final String firstItemToWrite,
		final String secondItemToWrite,
		final String thirdItemToWrite) throws Exception {

	final Path path = new Path(basePathForTest, "part-0");
	final RecoverableWriter initWriter = getRecoverableWriter();

	final Map<String, RecoverableWriter.ResumeRecoverable> recoverables = new HashMap<>(4);
	try (final RecoverableFsDataOutputStream stream = initWriter.open(path)) {
		recoverables.put(INIT_EMPTY_PERSIST, stream.persist());

		stream.write(bytesOf(firstItemToWrite));

		recoverables.put(INTERM_WITH_STATE_PERSIST, stream.persist());
		recoverables.put(INTERM_WITH_NO_ADDITIONAL_STATE_PERSIST, stream.persist());

		// and write some more data
		stream.write(bytesOf(secondItemToWrite));

		recoverables.put(FINAL_WITH_EXTRA_STATE, stream.persist());
	}

	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> serializer = initWriter.getResumeRecoverableSerializer();
	final byte[] serializedRecoverable = serializer.serialize(recoverables.get(persistName));

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();
	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> deserializer = newWriter.getResumeRecoverableSerializer();
	final RecoverableWriter.ResumeRecoverable recoveredRecoverable =
			deserializer.deserialize(serializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream recoveredStream = newWriter.recover(recoveredRecoverable);
	recoveredStream.write(bytesOf(thirdItemToWrite));
	recoveredStream.closeForCommit().commit();

	Assert.assertEquals(expectedFinalContents, getContentsOfFile(path));
}
Example 7
Source File: HadoopS3RecoverableWriterITCase.java    From flink with Apache License 2.0 5 votes vote down vote up 
private void testResumeAfterMultiplePersist(
		final String persistName,
		final String expectedFinalContents,
		final String firstItemToWrite,
		final String secondItemToWrite,
		final String thirdItemToWrite) throws Exception {

	final Path path = new Path(basePathForTest, "part-0");
	final RecoverableWriter initWriter = getRecoverableWriter();

	final Map<String, RecoverableWriter.ResumeRecoverable> recoverables = new HashMap<>(4);
	try (final RecoverableFsDataOutputStream stream = initWriter.open(path)) {
		recoverables.put(INIT_EMPTY_PERSIST, stream.persist());

		stream.write(bytesOf(firstItemToWrite));

		recoverables.put(INTERM_WITH_STATE_PERSIST, stream.persist());
		recoverables.put(INTERM_WITH_NO_ADDITIONAL_STATE_PERSIST, stream.persist());

		// and write some more data
		stream.write(bytesOf(secondItemToWrite));

		recoverables.put(FINAL_WITH_EXTRA_STATE, stream.persist());
	}

	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> serializer = initWriter.getResumeRecoverableSerializer();
	final byte[] serializedRecoverable = serializer.serialize(recoverables.get(persistName));

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();
	final SimpleVersionedSerializer<RecoverableWriter.ResumeRecoverable> deserializer = newWriter.getResumeRecoverableSerializer();
	final RecoverableWriter.ResumeRecoverable recoveredRecoverable =
			deserializer.deserialize(serializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream recoveredStream = newWriter.recover(recoveredRecoverable);
	recoveredStream.write(bytesOf(thirdItemToWrite));
	recoveredStream.closeForCommit().commit();

	Assert.assertEquals(expectedFinalContents, getContentsOfFile(path));
}
Example 8
Source File: SourceCoordinatorSerdeUtils.java    From flink with Apache License 2.0 5 votes vote down vote up 
/**
 * Deserialize the assignment by checkpoint ids.
 */
static <SplitT> Map<Long, Map<Integer, LinkedHashSet<SplitT>>> readAssignmentsByCheckpointId(
		DataInputStream in,
		SimpleVersionedSerializer<SplitT> splitSerializer) throws IOException {
	int splitSerializerVersion = in.readInt();
	int numCheckpoints = in.readInt();
	Map<Long, Map<Integer, LinkedHashSet<SplitT>>> assignmentsByCheckpointIds = new HashMap<>(numCheckpoints);
	for (int i = 0; i < numCheckpoints; i++) {
		long checkpointId = in.readLong();
		int numSubtasks = in.readInt();
		Map<Integer, LinkedHashSet<SplitT>> assignments = new HashMap<>();
		assignmentsByCheckpointIds.put(checkpointId, assignments);
		for (int j = 0; j < numSubtasks; j++) {
			int subtaskId = in.readInt();
			int numAssignedSplits = in.readInt();
			LinkedHashSet<SplitT> splits = new LinkedHashSet<>(numAssignedSplits);
			assignments.put(subtaskId, splits);
			for (int k = 0; k < numAssignedSplits; k++) {
				int serializedSplitSize = in.readInt();
				byte[] serializedSplit = readBytes(in, serializedSplitSize);
				SplitT split = splitSerializer.deserialize(splitSerializerVersion, serializedSplit);
				splits.add(split);
			}
		}
	}
	return assignmentsByCheckpointIds;
}
Example 9
Source File: AbstractRecoverableWriterTest.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path testDir = getBasePathForTest();
	final Path path = new Path(testDir, "part-0");

	final RecoverableWriter initWriter = getNewFileSystemWriter();

	final RecoverableWriter.CommitRecoverable recoverable;
	RecoverableFsDataOutputStream stream = null;
	try {
		stream = initWriter.open(path);
		stream.write(testData1.getBytes(StandardCharsets.UTF_8));

		stream.persist();
		stream.persist();

		// and write some more data
		stream.write(testData2.getBytes(StandardCharsets.UTF_8));

		recoverable = stream.closeForCommit().getRecoverable();
	} finally {
		IOUtils.closeQuietly(stream);
	}

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getNewFileSystemWriter();
	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Map<Path, String> files = getFileContentByPath(testDir);
	Assert.assertEquals(1L, files.size());

	for (Map.Entry<Path, String> fileContents : files.entrySet()) {
		Assert.assertEquals("part-0", fileContents.getKey().getName());
		Assert.assertEquals(testData1 + testData2, fileContents.getValue());
	}
}
Example 10
Source File: AbstractRecoverableWriterTest.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path testDir = getBasePathForTest();
	final Path path = new Path(testDir, "part-0");

	final RecoverableWriter initWriter = getNewFileSystemWriter();

	final RecoverableWriter.CommitRecoverable recoverable;
	RecoverableFsDataOutputStream stream = null;
	try {
		stream = initWriter.open(path);
		stream.write(testData1.getBytes(StandardCharsets.UTF_8));

		stream.persist();
		stream.persist();

		// and write some more data
		stream.write(testData2.getBytes(StandardCharsets.UTF_8));

		recoverable = stream.closeForCommit().getRecoverable();
	} finally {
		IOUtils.closeQuietly(stream);
	}

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getNewFileSystemWriter();
	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Map<Path, String> files = getFileContentByPath(testDir);
	Assert.assertEquals(1L, files.size());

	for (Map.Entry<Path, String> fileContents : files.entrySet()) {
		Assert.assertEquals("part-0", fileContents.getKey().getName());
		Assert.assertEquals(testData1 + testData2, fileContents.getValue());
	}
}
Example 11
Source File: HadoopS3RecoverableWriterITCase.java    From Flink-CEPplus with Apache License 2.0 3 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path path = new Path(basePathForTest, "part-0");

	final RecoverableWriter initWriter = getRecoverableWriter();

	final RecoverableFsDataOutputStream stream = initWriter.open(path);
	stream.write(bytesOf(testData1));

	stream.persist();
	stream.persist();

	// and write some more data
	stream.write(bytesOf(testData2));

	final RecoverableWriter.CommitRecoverable recoverable = stream.closeForCommit().getRecoverable();

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();

	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Assert.assertEquals(testData1 + testData2, getContentsOfFile(path));
}
Example 12
Source File: HadoopS3RecoverableWriterITCase.java    From flink with Apache License 2.0 3 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path path = new Path(basePathForTest, "part-0");

	final RecoverableWriter initWriter = getRecoverableWriter();

	final RecoverableFsDataOutputStream stream = initWriter.open(path);
	stream.write(bytesOf(testData1));

	stream.persist();
	stream.persist();

	// and write some more data
	stream.write(bytesOf(testData2));

	final RecoverableWriter.CommitRecoverable recoverable = stream.closeForCommit().getRecoverable();

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();

	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Assert.assertEquals(testData1 + testData2, getContentsOfFile(path));
}
Example 13
Source File: HadoopS3RecoverableWriterITCase.java    From flink with Apache License 2.0 3 votes vote down vote up 
@Test
public void testCommitAfterRecovery() throws Exception {
	final Path path = new Path(basePathForTest, "part-0");

	final RecoverableWriter initWriter = getRecoverableWriter();

	final RecoverableFsDataOutputStream stream = initWriter.open(path);
	stream.write(bytesOf(testData1));

	stream.persist();
	stream.persist();

	// and write some more data
	stream.write(bytesOf(testData2));

	final RecoverableWriter.CommitRecoverable recoverable = stream.closeForCommit().getRecoverable();

	final byte[] serializedRecoverable = initWriter.getCommitRecoverableSerializer().serialize(recoverable);

	// get a new serializer from a new writer to make sure that no pre-initialized state leaks in.
	final RecoverableWriter newWriter = getRecoverableWriter();

	final SimpleVersionedSerializer<RecoverableWriter.CommitRecoverable> deserializer = newWriter.getCommitRecoverableSerializer();
	final RecoverableWriter.CommitRecoverable recoveredRecoverable = deserializer.deserialize(deserializer.getVersion(), serializedRecoverable);

	final RecoverableFsDataOutputStream.Committer committer = newWriter.recoverForCommit(recoveredRecoverable);
	committer.commitAfterRecovery();

	Assert.assertEquals(testData1 + testData2, getContentsOfFile(path));
}