Examples with LocalRecoveryDirectoryProvider org.apache.flink.runtime.state.LocalRecoveryDirectoryProvider used on opensource projects

Example 1 with LocalRecoveryDirectoryProvider

use of org.apache.flink.runtime.state.LocalRecoveryDirectoryProvider in project flink by apache.

the class RocksIncrementalSnapshotStrategy method prepareLocalSnapshotDirectory.

@Nonnull
private SnapshotDirectory prepareLocalSnapshotDirectory(long checkpointId) throws IOException {
    if (localRecoveryConfig.isLocalRecoveryEnabled()) {
        // create a "permanent" snapshot directory for local recovery.
        LocalRecoveryDirectoryProvider directoryProvider = localRecoveryConfig.getLocalStateDirectoryProvider().orElseThrow(LocalRecoveryConfig.localRecoveryNotEnabled());
        File directory = directoryProvider.subtaskSpecificCheckpointDirectory(checkpointId);
        if (!directory.exists() && !directory.mkdirs()) {
            throw new IOException("Local state base directory for checkpoint " + checkpointId + " does not exist and could not be created: " + directory);
        }
        // introduces an extra directory because RocksDB wants a non-existing directory for
        // native checkpoints.
        // append localDirectoryName here to solve directory collision problem when two stateful
        // operators chained in one task.
        File rdbSnapshotDir = new File(directory, localDirectoryName);
        if (rdbSnapshotDir.exists()) {
            FileUtils.deleteDirectory(rdbSnapshotDir);
        }
        Path path = rdbSnapshotDir.toPath();
        // create a "permanent" snapshot directory because local recovery is active.
        try {
            return SnapshotDirectory.permanent(path);
        } catch (IOException ex) {
            try {
                FileUtils.deleteDirectory(directory);
            } catch (IOException delEx) {
                ex = ExceptionUtils.firstOrSuppressed(delEx, ex);
            }
            throw ex;
        }
    } else {
        // create a "temporary" snapshot directory because local recovery is inactive.
        File snapshotDir = new File(instanceBasePath, "chk-" + checkpointId);
        return SnapshotDirectory.temporary(snapshotDir);
    }
}

Example 2 with LocalRecoveryDirectoryProvider

use of org.apache.flink.runtime.state.LocalRecoveryDirectoryProvider in project flink by apache.

the class StreamOperatorSnapshotRestoreTest method testOperatorStatesSnapshotRestoreInternal.

private void testOperatorStatesSnapshotRestoreInternal(final int mode) throws Exception {
    // -------------------------------------------------------------------------- snapshot
    StateBackend stateBackend;
    FsStateBackend fsstateBackend = createStateBackendInternal();
    switch(stateBackendEnum) {
        case FILE:
            stateBackend = fsstateBackend;
            break;
        case ROCKSDB_FULLY_ASYNC:
            stateBackend = new RocksDBStateBackend(fsstateBackend, TernaryBoolean.FALSE);
            break;
        case ROCKSDB_INCREMENTAL:
            stateBackend = new RocksDBStateBackend(fsstateBackend, TernaryBoolean.TRUE);
            break;
        default:
            throw new IllegalStateException(String.format("Do not support statebackend type %s", stateBackendEnum));
    }
    TestOneInputStreamOperator op = new TestOneInputStreamOperator(false);
    JobID jobID = new JobID();
    JobVertexID jobVertexID = new JobVertexID();
    int subtaskIdx = 0;
    LocalRecoveryDirectoryProvider directoryProvider = mode == ONLY_JM_RECOVERY ? null : new LocalRecoveryDirectoryProviderImpl(temporaryFolder.newFolder(), jobID, jobVertexID, subtaskIdx);
    LocalRecoveryConfig localRecoveryConfig = new LocalRecoveryConfig(directoryProvider);
    MockEnvironment mockEnvironment = new MockEnvironmentBuilder().setJobID(jobID).setJobVertexID(jobVertexID).setTaskName("test").setManagedMemorySize(1024L * 1024L).setInputSplitProvider(new MockInputSplitProvider()).setBufferSize(1024 * 1024).setTaskStateManager(new TestTaskStateManager(localRecoveryConfig)).setMaxParallelism(MAX_PARALLELISM).setSubtaskIndex(subtaskIdx).setUserCodeClassLoader(getClass().getClassLoader()).build();
    KeyedOneInputStreamOperatorTestHarness<Integer, Integer, Integer> testHarness = new KeyedOneInputStreamOperatorTestHarness<>(op, (KeySelector<Integer, Integer>) value -> value, TypeInformation.of(Integer.class), mockEnvironment);
    testHarness.setStateBackend(stateBackend);
    testHarness.open();
    for (int i = 0; i < 10; ++i) {
        testHarness.processElement(new StreamRecord<>(i));
    }
    OperatorSnapshotFinalizer snapshotWithLocalState = testHarness.snapshotWithLocalState(1L, 1L);
    testHarness.close();
    // -------------------------------------------------------------------------- restore
    op = new TestOneInputStreamOperator(true);
    testHarness = new KeyedOneInputStreamOperatorTestHarness<>(op, (KeySelector<Integer, Integer>) value -> value, TypeInformation.of(Integer.class), MAX_PARALLELISM, 1, /* num subtasks */
    0);
    testHarness.setTimeServiceManagerProvider(new InternalTimeServiceManager.Provider() {

        @Override
        public <K> InternalTimeServiceManager<K> create(CheckpointableKeyedStateBackend<K> keyedStatedBackend, ClassLoader userClassloader, KeyContext keyContext, ProcessingTimeService processingTimeService, Iterable<KeyGroupStatePartitionStreamProvider> rawKeyedStates) throws IOException {
            return null;
        }
    });
    testHarness.setStateBackend(stateBackend);
    OperatorSubtaskState jobManagerOwnedState = snapshotWithLocalState.getJobManagerOwnedState();
    OperatorSubtaskState taskLocalState = snapshotWithLocalState.getTaskLocalState();
    // We check if local state was created when we enabled local recovery
    Assert.assertTrue(mode > ONLY_JM_RECOVERY == (taskLocalState != null && taskLocalState.hasState()));
    if (mode == TM_REMOVE_JM_RECOVERY) {
        jobManagerOwnedState.getManagedKeyedState().discardState();
    } else if (mode == JM_REMOVE_TM_RECOVERY) {
        taskLocalState.getManagedKeyedState().discardState();
    }
    testHarness.initializeState(jobManagerOwnedState, taskLocalState);
    testHarness.open();
    for (int i = 0; i < 10; ++i) {
        testHarness.processElement(new StreamRecord<>(i));
    }
    testHarness.close();
}