Java Code Examples for org.apache.flink.runtime.state.CheckpointStorage#initializeLocationForCheckpoint()

The following examples show how to use org.apache.flink.runtime.state.CheckpointStorage#initializeLocationForCheckpoint() . 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: AbstractFileCheckpointStorageTestBase.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
@Test
public void writeToAlreadyExistingCheckpointFails() throws Exception {
	final byte[] data = {8, 8, 4, 5, 2, 6, 3};
	final long checkpointId = 177;

	final CheckpointStorage storage = createCheckpointStorage(randomTempPath());
	final CheckpointStorageLocation loc = storage.initializeLocationForCheckpoint(checkpointId);

	// write to the metadata file for the checkpoint

	try (CheckpointMetadataOutputStream out = loc.createMetadataOutputStream()) {
		out.write(data);
		out.closeAndFinalizeCheckpoint();
	}

	// create another writer to the metadata file for the checkpoint
	try {
		loc.createMetadataOutputStream();
		fail("this should fail with an exception");
	}
	catch (IOException ignored) {}
}
Example 2
Source File: AbstractFileCheckpointStorageTestBase.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void writeToAlreadyExistingCheckpointFails() throws Exception {
	final byte[] data = {8, 8, 4, 5, 2, 6, 3};
	final long checkpointId = 177;

	final CheckpointStorage storage = createCheckpointStorage(randomTempPath());
	final CheckpointStorageLocation loc = storage.initializeLocationForCheckpoint(checkpointId);

	// write to the metadata file for the checkpoint

	try (CheckpointMetadataOutputStream out = loc.createMetadataOutputStream()) {
		out.write(data);
		out.closeAndFinalizeCheckpoint();
	}

	// create another writer to the metadata file for the checkpoint
	try {
		loc.createMetadataOutputStream();
		fail("this should fail with an exception");
	}
	catch (IOException ignored) {}
}
Example 3
Source File: AbstractFileCheckpointStorageTestBase.java    From flink with Apache License 2.0 6 votes vote down vote up 
@Test
public void writeToAlreadyExistingCheckpointFails() throws Exception {
	final byte[] data = {8, 8, 4, 5, 2, 6, 3};
	final long checkpointId = 177;

	final CheckpointStorage storage = createCheckpointStorage(randomTempPath());
	storage.initializeBaseLocations();
	final CheckpointStorageLocation loc = storage.initializeLocationForCheckpoint(checkpointId);

	// write to the metadata file for the checkpoint

	try (CheckpointMetadataOutputStream out = loc.createMetadataOutputStream()) {
		out.write(data);
		out.closeAndFinalizeCheckpoint();
	}

	// create another writer to the metadata file for the checkpoint
	try {
		loc.createMetadataOutputStream();
		fail("this should fail with an exception");
	}
	catch (IOException ignored) {}
}
Example 4
Source File: AbstractFileCheckpointStorageTestBase.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
/**
 * Validates that multiple checkpoints from different jobs with the same checkpoint ID do not
 * interfere with each other.
 */
@Test
public void testPersistMultipleMetadataOnlyCheckpoints() throws Exception {
	final FileSystem fs = FileSystem.getLocalFileSystem();
	final Path checkpointDir = new Path(tmp.newFolder().toURI());

	final long checkpointId = 177;

	final CheckpointStorage storage1 = createCheckpointStorage(checkpointDir);
	final CheckpointStorage storage2 = createCheckpointStorage(checkpointDir);

	final CheckpointStorageLocation loc1 = storage1.initializeLocationForCheckpoint(checkpointId);
	final CheckpointStorageLocation loc2 = storage2.initializeLocationForCheckpoint(checkpointId);

	final byte[] data1 = {77, 66, 55, 99, 88};
	final byte[] data2 = {1, 3, 2, 5, 4};

	final CompletedCheckpointStorageLocation completedLocation1;
	try (CheckpointMetadataOutputStream out = loc1.createMetadataOutputStream()) {
		out.write(data1);
		completedLocation1 = out.closeAndFinalizeCheckpoint();
	}
	final String result1 = completedLocation1.getExternalPointer();

	final CompletedCheckpointStorageLocation completedLocation2;
	try (CheckpointMetadataOutputStream out = loc2.createMetadataOutputStream()) {
		out.write(data2);
		completedLocation2 = out.closeAndFinalizeCheckpoint();
	}
	final String result2 = completedLocation2.getExternalPointer();

	// check that this went to a file, but in a nested directory structure

	// one directory per storage
	FileStatus[] files = fs.listStatus(checkpointDir);
	assertEquals(2, files.length);

	// in each per-storage directory, one for the checkpoint
	FileStatus[] job1Files = fs.listStatus(files[0].getPath());
	FileStatus[] job2Files = fs.listStatus(files[1].getPath());
	assertTrue(job1Files.length >= 1);
	assertTrue(job2Files.length >= 1);

	assertTrue(fs.exists(new Path(result1, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));
	assertTrue(fs.exists(new Path(result2, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));

	// check that both storages can resolve each others contents
	validateContents(storage1.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage1.resolveCheckpoint(result2).getMetadataHandle(), data2);
	validateContents(storage2.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage2.resolveCheckpoint(result2).getMetadataHandle(), data2);
}
Example 5
Source File: AbstractFileCheckpointStorageTestBase.java    From flink with Apache License 2.0 4 votes vote down vote up 
/**
 * Validates that multiple checkpoints from different jobs with the same checkpoint ID do not
 * interfere with each other.
 */
@Test
public void testPersistMultipleMetadataOnlyCheckpoints() throws Exception {
	final FileSystem fs = FileSystem.getLocalFileSystem();
	final Path checkpointDir = new Path(tmp.newFolder().toURI());

	final long checkpointId = 177;

	final CheckpointStorage storage1 = createCheckpointStorage(checkpointDir);
	final CheckpointStorage storage2 = createCheckpointStorage(checkpointDir);

	final CheckpointStorageLocation loc1 = storage1.initializeLocationForCheckpoint(checkpointId);
	final CheckpointStorageLocation loc2 = storage2.initializeLocationForCheckpoint(checkpointId);

	final byte[] data1 = {77, 66, 55, 99, 88};
	final byte[] data2 = {1, 3, 2, 5, 4};

	final CompletedCheckpointStorageLocation completedLocation1;
	try (CheckpointMetadataOutputStream out = loc1.createMetadataOutputStream()) {
		out.write(data1);
		completedLocation1 = out.closeAndFinalizeCheckpoint();
	}
	final String result1 = completedLocation1.getExternalPointer();

	final CompletedCheckpointStorageLocation completedLocation2;
	try (CheckpointMetadataOutputStream out = loc2.createMetadataOutputStream()) {
		out.write(data2);
		completedLocation2 = out.closeAndFinalizeCheckpoint();
	}
	final String result2 = completedLocation2.getExternalPointer();

	// check that this went to a file, but in a nested directory structure

	// one directory per storage
	FileStatus[] files = fs.listStatus(checkpointDir);
	assertEquals(2, files.length);

	// in each per-storage directory, one for the checkpoint
	FileStatus[] job1Files = fs.listStatus(files[0].getPath());
	FileStatus[] job2Files = fs.listStatus(files[1].getPath());
	assertTrue(job1Files.length >= 1);
	assertTrue(job2Files.length >= 1);

	assertTrue(fs.exists(new Path(result1, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));
	assertTrue(fs.exists(new Path(result2, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));

	// check that both storages can resolve each others contents
	validateContents(storage1.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage1.resolveCheckpoint(result2).getMetadataHandle(), data2);
	validateContents(storage2.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage2.resolveCheckpoint(result2).getMetadataHandle(), data2);
}
Example 6
Source File: AbstractFileCheckpointStorageTestBase.java    From flink with Apache License 2.0 4 votes vote down vote up 
/**
 * Validates that multiple checkpoints from different jobs with the same checkpoint ID do not
 * interfere with each other.
 */
@Test
public void testPersistMultipleMetadataOnlyCheckpoints() throws Exception {
	final FileSystem fs = FileSystem.getLocalFileSystem();
	final Path checkpointDir = new Path(tmp.newFolder().toURI());

	final long checkpointId = 177;

	final CheckpointStorage storage1 = createCheckpointStorage(checkpointDir);
	storage1.initializeBaseLocations();
	final CheckpointStorage storage2 = createCheckpointStorage(checkpointDir);
	storage2.initializeBaseLocations();

	final CheckpointStorageLocation loc1 = storage1.initializeLocationForCheckpoint(checkpointId);
	final CheckpointStorageLocation loc2 = storage2.initializeLocationForCheckpoint(checkpointId);

	final byte[] data1 = {77, 66, 55, 99, 88};
	final byte[] data2 = {1, 3, 2, 5, 4};

	final CompletedCheckpointStorageLocation completedLocation1;
	try (CheckpointMetadataOutputStream out = loc1.createMetadataOutputStream()) {
		out.write(data1);
		completedLocation1 = out.closeAndFinalizeCheckpoint();
	}
	final String result1 = completedLocation1.getExternalPointer();

	final CompletedCheckpointStorageLocation completedLocation2;
	try (CheckpointMetadataOutputStream out = loc2.createMetadataOutputStream()) {
		out.write(data2);
		completedLocation2 = out.closeAndFinalizeCheckpoint();
	}
	final String result2 = completedLocation2.getExternalPointer();

	// check that this went to a file, but in a nested directory structure

	// one directory per storage
	FileStatus[] files = fs.listStatus(checkpointDir);
	assertEquals(2, files.length);

	// in each per-storage directory, one for the checkpoint
	FileStatus[] job1Files = fs.listStatus(files[0].getPath());
	FileStatus[] job2Files = fs.listStatus(files[1].getPath());
	assertTrue(job1Files.length >= 1);
	assertTrue(job2Files.length >= 1);

	assertTrue(fs.exists(new Path(result1, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));
	assertTrue(fs.exists(new Path(result2, AbstractFsCheckpointStorage.METADATA_FILE_NAME)));

	// check that both storages can resolve each others contents
	validateContents(storage1.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage1.resolveCheckpoint(result2).getMetadataHandle(), data2);
	validateContents(storage2.resolveCheckpoint(result1).getMetadataHandle(), data1);
	validateContents(storage2.resolveCheckpoint(result2).getMetadataHandle(), data2);
}