Examples with TaskStateSnapshot org.apache.flink.runtime.checkpoint.TaskStateSnapshot used on opensource projects

Example 16 with TaskStateSnapshot

use of org.apache.flink.runtime.checkpoint.TaskStateSnapshot in project flink by apache.

the class RocksDBAsyncSnapshotTest method testFullyAsyncSnapshot.

/**
 * This ensures that asynchronous state handles are actually materialized asynchronously.
 *
 * <p>We use latches to block at various stages and see if the code still continues through the
 * parts that are not asynchronous. If the checkpoint is not done asynchronously the test will
 * simply lock forever.
 */
@Test
public void testFullyAsyncSnapshot() throws Exception {
    final OneInputStreamTaskTestHarness<String, String> testHarness = new OneInputStreamTaskTestHarness<>(OneInputStreamTask::new, BasicTypeInfo.STRING_TYPE_INFO, BasicTypeInfo.STRING_TYPE_INFO);
    testHarness.setupOutputForSingletonOperatorChain();
    testHarness.configureForKeyedStream(new KeySelector<String, String>() {

        @Override
        public String getKey(String value) throws Exception {
            return value;
        }
    }, BasicTypeInfo.STRING_TYPE_INFO);
    StreamConfig streamConfig = testHarness.getStreamConfig();
    File dbDir = temporaryFolder.newFolder();
    RocksDBStateBackend backend = new RocksDBStateBackend(new MemoryStateBackend());
    backend.setDbStoragePath(dbDir.getAbsolutePath());
    streamConfig.setStateBackend(backend);
    streamConfig.setStreamOperator(new AsyncCheckpointOperator());
    streamConfig.setOperatorID(new OperatorID());
    final OneShotLatch delayCheckpointLatch = new OneShotLatch();
    final OneShotLatch ensureCheckpointLatch = new OneShotLatch();
    CheckpointResponder checkpointResponderMock = new CheckpointResponder() {

        @Override
        public void acknowledgeCheckpoint(JobID jobID, ExecutionAttemptID executionAttemptID, long checkpointId, CheckpointMetrics checkpointMetrics, TaskStateSnapshot subtaskState) {
            // even though the async checkpoint would not finish
            try {
                delayCheckpointLatch.await();
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
            boolean hasManagedKeyedState = false;
            for (Map.Entry<OperatorID, OperatorSubtaskState> entry : subtaskState.getSubtaskStateMappings()) {
                OperatorSubtaskState state = entry.getValue();
                if (state != null) {
                    hasManagedKeyedState |= state.getManagedKeyedState() != null;
                }
            }
            // should be one k/v state
            assertTrue(hasManagedKeyedState);
            // we now know that the checkpoint went through
            ensureCheckpointLatch.trigger();
        }

        @Override
        public void reportCheckpointMetrics(JobID jobID, ExecutionAttemptID executionAttemptID, long checkpointId, CheckpointMetrics checkpointMetrics) {
        }

        @Override
        public void declineCheckpoint(JobID jobID, ExecutionAttemptID executionAttemptID, long checkpointId, CheckpointException checkpointException) {
        }
    };
    JobID jobID = new JobID();
    ExecutionAttemptID executionAttemptID = new ExecutionAttemptID();
    TestTaskStateManager taskStateManagerTestMock = new TestTaskStateManager(jobID, executionAttemptID, checkpointResponderMock, TestLocalRecoveryConfig.disabled(), new InMemoryStateChangelogStorage(), new HashMap<>(), -1L, new OneShotLatch());
    StreamMockEnvironment mockEnv = new StreamMockEnvironment(testHarness.jobConfig, testHarness.taskConfig, testHarness.memorySize, new MockInputSplitProvider(), testHarness.bufferSize, taskStateManagerTestMock);
    AtomicReference<Throwable> errorRef = new AtomicReference<>();
    mockEnv.setExternalExceptionHandler(errorRef::set);
    testHarness.invoke(mockEnv);
    testHarness.waitForTaskRunning();
    final OneInputStreamTask<String, String> task = testHarness.getTask();
    task.triggerCheckpointAsync(new CheckpointMetaData(42, 17), CheckpointOptions.forCheckpointWithDefaultLocation()).get();
    testHarness.processElement(new StreamRecord<>("Wohoo", 0));
    // now we allow the checkpoint
    delayCheckpointLatch.trigger();
    // wait for the checkpoint to go through
    ensureCheckpointLatch.await();
    testHarness.endInput();
    ExecutorService threadPool = task.getAsyncOperationsThreadPool();
    threadPool.shutdown();
    Assert.assertTrue(threadPool.awaitTermination(60_000, TimeUnit.MILLISECONDS));
    testHarness.waitForTaskCompletion();
    if (errorRef.get() != null) {
        fail("Unexpected exception during execution.");
    }
}

Example 17 with TaskStateSnapshot

use of org.apache.flink.runtime.checkpoint.TaskStateSnapshot in project flink by apache.

the class RestoreStreamTaskTest method testRestore.

@Test
public void testRestore() throws Exception {
    OperatorID headOperatorID = new OperatorID(42L, 42L);
    OperatorID tailOperatorID = new OperatorID(44L, 44L);
    JobManagerTaskRestore restore = createRunAndCheckpointOperatorChain(headOperatorID, new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.empty());
    TaskStateSnapshot stateHandles = restore.getTaskStateSnapshot();
    assertEquals(2, stateHandles.getSubtaskStateMappings().size());
    createRunAndCheckpointOperatorChain(headOperatorID, new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.of(restore));
    assertEquals(new HashSet<>(Arrays.asList(headOperatorID, tailOperatorID)), RESTORED_OPERATORS.keySet());
    assertThat(new HashSet<>(RESTORED_OPERATORS.values()), contains(restore.getRestoreCheckpointId()));
}

Example 18 with TaskStateSnapshot

use of org.apache.flink.runtime.checkpoint.TaskStateSnapshot in project flink by apache.

the class RestoreStreamTaskTest method testRestoreWithoutState.

@Test
public void testRestoreWithoutState() throws Exception {
    OperatorID headOperatorID = new OperatorID(42L, 42L);
    OperatorID tailOperatorID = new OperatorID(44L, 44L);
    JobManagerTaskRestore restore = createRunAndCheckpointOperatorChain(headOperatorID, new StatelessOperator(), tailOperatorID, new CounterOperator(), Optional.empty());
    TaskStateSnapshot stateHandles = restore.getTaskStateSnapshot();
    assertEquals(2, stateHandles.getSubtaskStateMappings().size());
    createRunAndCheckpointOperatorChain(headOperatorID, new StatelessOperator(), tailOperatorID, new CounterOperator(), Optional.of(restore));
    assertEquals(new HashSet<>(Arrays.asList(headOperatorID, tailOperatorID)), RESTORED_OPERATORS.keySet());
    assertThat(new HashSet<>(RESTORED_OPERATORS.values()), contains(restore.getRestoreCheckpointId()));
}

Example 19 with TaskStateSnapshot

use of org.apache.flink.runtime.checkpoint.TaskStateSnapshot in project flink by apache.

the class RestoreStreamTaskTest method testRestoreHeadWithNewId.

@Test
public void testRestoreHeadWithNewId() throws Exception {
    OperatorID tailOperatorID = new OperatorID(44L, 44L);
    JobManagerTaskRestore restore = createRunAndCheckpointOperatorChain(new OperatorID(42L, 42L), new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.empty());
    TaskStateSnapshot stateHandles = restore.getTaskStateSnapshot();
    assertEquals(2, stateHandles.getSubtaskStateMappings().size());
    createRunAndCheckpointOperatorChain(new OperatorID(4242L, 4242L), new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.of(restore));
    assertEquals(Collections.singleton(tailOperatorID), RESTORED_OPERATORS.keySet());
    assertThat(new HashSet<>(RESTORED_OPERATORS.values()), contains(restore.getRestoreCheckpointId()));
}

Example 20 with TaskStateSnapshot

use of org.apache.flink.runtime.checkpoint.TaskStateSnapshot in project flink by apache.

the class RestoreStreamTaskTest method testRestoreAfterScaleUp.

@Test
public void testRestoreAfterScaleUp() throws Exception {
    OperatorID headOperatorID = new OperatorID(42L, 42L);
    OperatorID tailOperatorID = new OperatorID(44L, 44L);
    JobManagerTaskRestore restore = createRunAndCheckpointOperatorChain(headOperatorID, new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.empty());
    TaskStateSnapshot stateHandles = restore.getTaskStateSnapshot();
    assertEquals(2, stateHandles.getSubtaskStateMappings().size());
    // test empty state in case of scale up
    OperatorSubtaskState emptyHeadOperatorState = OperatorSubtaskState.builder().build();
    stateHandles.putSubtaskStateByOperatorID(headOperatorID, emptyHeadOperatorState);
    createRunAndCheckpointOperatorChain(headOperatorID, new CounterOperator(), tailOperatorID, new CounterOperator(), Optional.of(restore));
    assertEquals(new HashSet<>(Arrays.asList(headOperatorID, tailOperatorID)), RESTORED_OPERATORS.keySet());
    assertThat(new HashSet<>(RESTORED_OPERATORS.values()), contains(restore.getRestoreCheckpointId()));
}