Java Code Examples for org.apache.flink.api.common.state.OperatorStateStore#getSerializableListState()

The following examples show how to use org.apache.flink.api.common.state.OperatorStateStore#getSerializableListState() . 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: RollingSink.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
	Preconditions.checkArgument(this.restoredBucketStates == null,
		"The " + getClass().getSimpleName() + " has already been initialized.");

	try {
		initFileSystem();
	} catch (IOException e) {
		LOG.error("Error while creating FileSystem when initializing the state of the RollingSink.", e);
		throw new RuntimeException("Error while creating FileSystem when initializing the state of the RollingSink.", e);
	}

	if (this.refTruncate == null) {
		this.refTruncate = reflectTruncate(fs);
	}

	OperatorStateStore stateStore = context.getOperatorStateStore();
	restoredBucketStates = stateStore.getSerializableListState("rolling-states");

	int subtaskIndex = getRuntimeContext().getIndexOfThisSubtask();
	if (context.isRestored()) {
		LOG.info("Restoring state for the {} (taskIdx={}).", getClass().getSimpleName(), subtaskIndex);

		for (BucketState bucketState : restoredBucketStates.get()) {
			handleRestoredBucketState(bucketState);
		}

		if (LOG.isDebugEnabled()) {
			LOG.debug("{} (taskIdx= {}) restored {}", getClass().getSimpleName(), subtaskIndex, bucketState);
		}
	} else {
		LOG.info("No state to restore for the {} (taskIdx= {}).", getClass().getSimpleName(), subtaskIndex);
	}
}
Example 2
Source File: BucketingSink.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
	Preconditions.checkArgument(this.restoredBucketStates == null, "The operator has already been initialized.");

	try {
		initFileSystem();
	} catch (IOException e) {
		LOG.error("Error while creating FileSystem when initializing the state of the BucketingSink.", e);
		throw new RuntimeException("Error while creating FileSystem when initializing the state of the BucketingSink.", e);
	}

	if (this.refTruncate == null) {
		this.refTruncate = reflectTruncate(fs);
	}

	OperatorStateStore stateStore = context.getOperatorStateStore();
	restoredBucketStates = stateStore.getSerializableListState("bucket-states");

	int subtaskIndex = getRuntimeContext().getIndexOfThisSubtask();
	if (context.isRestored()) {
		LOG.info("Restoring state for the {} (taskIdx={}).", getClass().getSimpleName(), subtaskIndex);

		for (State<T> recoveredState : restoredBucketStates.get()) {
			handleRestoredBucketState(recoveredState);
			if (LOG.isDebugEnabled()) {
				LOG.debug("{} idx {} restored {}", getClass().getSimpleName(), subtaskIndex, recoveredState);
			}
		}
	} else {
		LOG.info("No state to restore for the {} (taskIdx={}).", getClass().getSimpleName(), subtaskIndex);
	}
}
Example 3
Source File: BucketingSink.java    From flink with Apache License 2.0 5 votes vote down vote up 
@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
	Preconditions.checkArgument(this.restoredBucketStates == null, "The operator has already been initialized.");

	try {
		initFileSystem();
	} catch (IOException e) {
		LOG.error("Error while creating FileSystem when initializing the state of the BucketingSink.", e);
		throw new RuntimeException("Error while creating FileSystem when initializing the state of the BucketingSink.", e);
	}

	if (this.refTruncate == null) {
		this.refTruncate = reflectTruncate(fs);
	}

	OperatorStateStore stateStore = context.getOperatorStateStore();
	restoredBucketStates = stateStore.getSerializableListState("bucket-states");

	int subtaskIndex = getRuntimeContext().getIndexOfThisSubtask();
	if (context.isRestored()) {
		LOG.info("Restoring state for the {} (taskIdx={}).", getClass().getSimpleName(), subtaskIndex);

		for (State<T> recoveredState : restoredBucketStates.get()) {
			handleRestoredBucketState(recoveredState);
			if (LOG.isDebugEnabled()) {
				LOG.debug("{} idx {} restored {}", getClass().getSimpleName(), subtaskIndex, recoveredState);
			}
		}
	} else {
		LOG.info("No state to restore for the {} (taskIdx={}).", getClass().getSimpleName(), subtaskIndex);
	}
}
Example 4
Source File: BucketingSinkMigrationTest.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
/**
 * The actual paths in this depend on the binary checkpoint so it you update this the paths
 * here have to be updated as well.
 */
@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
	OperatorStateStore stateStore = context.getOperatorStateStore();

	ListState<State<T>> restoredBucketStates = stateStore.getSerializableListState("bucket-states");

	if (context.isRestored()) {

		for (State<T> states : restoredBucketStates.get()) {
			for (String bucketPath : states.bucketStates.keySet()) {
				BucketState state = states.getBucketState(new Path(bucketPath));
				String current = state.currentFile;
				long validLength = state.currentFileValidLength;

				Assert.assertEquals(expectedBucketFilesPrefix + "4", current);
				Assert.assertEquals(6, validLength);

				List<String> pendingFiles = state.pendingFiles;
				assertTrue(pendingFiles.isEmpty());

				final Map<Long, List<String>> pendingFilesPerCheckpoint = state.pendingFilesPerCheckpoint;
				Assert.assertEquals(1, pendingFilesPerCheckpoint.size());

				for (Map.Entry<Long, List<String>> entry: pendingFilesPerCheckpoint.entrySet()) {
					long checkpoint = entry.getKey();
					List<String> files = entry.getValue();

					Assert.assertEquals(0L, checkpoint);
					Assert.assertEquals(4, files.size());

					for (int i = 0; i < 4; i++) {
						Assert.assertEquals(
								expectedBucketFilesPrefix + i,
								files.get(i));
					}
				}
			}
		}
	}

	initializeCalled = true;
	super.initializeState(context);
}
Example 5
Source File: BucketingSinkMigrationTest.java    From flink with Apache License 2.0 4 votes vote down vote up 
/**
 * The actual paths in this depend on the binary checkpoint so it you update this the paths
 * here have to be updated as well.
 */
@Override
public void initializeState(FunctionInitializationContext context) throws Exception {
	OperatorStateStore stateStore = context.getOperatorStateStore();

	ListState<State<T>> restoredBucketStates = stateStore.getSerializableListState("bucket-states");

	if (context.isRestored()) {

		for (State<T> states : restoredBucketStates.get()) {
			for (String bucketPath : states.bucketStates.keySet()) {
				BucketState state = states.getBucketState(new Path(bucketPath));
				String current = state.currentFile;
				long validLength = state.currentFileValidLength;

				Assert.assertEquals(expectedBucketFilesPrefix + "4", current);
				Assert.assertEquals(6, validLength);

				List<String> pendingFiles = state.pendingFiles;
				assertTrue(pendingFiles.isEmpty());

				final Map<Long, List<String>> pendingFilesPerCheckpoint = state.pendingFilesPerCheckpoint;
				Assert.assertEquals(1, pendingFilesPerCheckpoint.size());

				for (Map.Entry<Long, List<String>> entry: pendingFilesPerCheckpoint.entrySet()) {
					long checkpoint = entry.getKey();
					List<String> files = entry.getValue();

					Assert.assertEquals(0L, checkpoint);
					Assert.assertEquals(4, files.size());

					for (int i = 0; i < 4; i++) {
						Assert.assertEquals(
								expectedBucketFilesPrefix + i,
								files.get(i));
					}
				}
			}
		}
	}

	initializeCalled = true;
	super.initializeState(context);
}