Examples with InMemorySnapshotInfoStore io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore used on opensource projects

Example 1 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleTruncation.

/**
 * Test simple chunk truncation.
 * We failover two times to test correct interaction between snapshot and system logs.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleTruncation() throws Exception {
    @Cleanup CleanupHelper cleanupHelper = new CleanupHelper();
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    int containerId = 42;
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    @Cleanup val garbageCollector1 = new GarbageCollector(containerId, chunkStorage, metadataStoreBeforeCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector1.initialize(new InMemoryTaskQueueManager()).join();
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(2);
    val config = getDefaultConfigBuilder(policy).build();
    // Step 1: Initial set of additions
    SystemJournal systemJournalBefore = new SystemJournal(containerId, chunkStorage, metadataStoreBeforeCrash, garbageCollector1, config, executorService());
    systemJournalBefore.bootstrap(epoch, snapshotInfoStore).join();
    String lastChunk = null;
    long totalBytesWritten = 0;
    for (int i = 0; i < 10; i++) {
        String newChunk = "chunk" + i;
        val h = chunkStorage.createWithContent(newChunk, Math.toIntExact(policy.getMaxLength()), new ByteArrayInputStream(new byte[Math.toIntExact(policy.getMaxLength())])).get();
        totalBytesWritten += policy.getMaxLength();
        systemJournalBefore.commitRecord(SystemJournal.ChunkAddedRecord.builder().segmentName(systemSegmentName).offset(policy.getMaxLength() * i).newChunkName(newChunk).oldChunkName(lastChunk).build()).join();
        lastChunk = newChunk;
    }
    Assert.assertEquals(policy.getMaxLength() * 10, totalBytesWritten);
    // Step 2: First failover, truncate first 5 chunks.
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    @Cleanup val garbageCollector2 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector2.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash, garbageCollector2, config, executorService());
    systemJournalAfter.bootstrap(2, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash, systemSegmentName, policy.getMaxLength(), 10);
    TestUtils.checkSegmentBounds(metadataStoreAfterCrash, systemSegmentName, 0, totalBytesWritten);
    // Truncate first five chunks
    for (int i = 0; i <= 10; i++) {
        val firstChunkIndex = i / policy.getMaxLength();
        systemJournalAfter.commitRecord(SystemJournal.TruncationRecord.builder().segmentName(systemSegmentName).offset(i).firstChunkName("chunk" + firstChunkIndex).startOffset(policy.getMaxLength() * firstChunkIndex).build()).join();
    }
    // Step 3: Second failover, truncate last 5 chunks.
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash2 = getMetadataStore();
    @Cleanup val garbageCollector3 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash2, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector3.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter2 = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash2, garbageCollector3, config, executorService());
    systemJournalAfter2.bootstrap(3, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash2, systemSegmentName, policy.getMaxLength(), 5);
    TestUtils.checkSegmentBounds(metadataStoreAfterCrash2, systemSegmentName, 10, 20);
    // Truncate last five chunks
    for (int i = 10; i <= 20; i++) {
        val firstChunkIndex = i / policy.getMaxLength();
        systemJournalAfter2.commitRecord(SystemJournal.TruncationRecord.builder().segmentName(systemSegmentName).offset(i).firstChunkName("chunk" + firstChunkIndex).startOffset(policy.getMaxLength() * firstChunkIndex).build()).join();
    }
    // Step 4: third failover validate.
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash3 = getMetadataStore();
    @Cleanup val garbageCollector4 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash2, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector4.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter3 = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash3, garbageCollector4, config, executorService());
    systemJournalAfter3.bootstrap(4, snapshotInfoStore).join();
    TestUtils.checkSegmentBounds(metadataStoreAfterCrash3, systemSegmentName, 20, 20);
}

Example 2 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testBootstrapWithTruncate.

/**
 * Tests two failures with truncates and zombie stores writing junk data.
 *
 * @param initialGarbageThatIsTruncated Garbage to write that is later truncated away.
 * @param garbageAfterFailure           Garbage to write from the first zombie instance.
 * @param validWriteBeforeFailure       First part of the valid data written before the failure.
 * @param validWriteAfterFailure        Second part of the valid data written after the failure.
 * @param maxLength                     Max length for the segment policy.
 * @throws Exception Throws exception in case of any error.
 */
private void testBootstrapWithTruncate(String initialGarbageThatIsTruncated, String garbageAfterFailure, String validWriteBeforeFailure, String validWriteAfterFailure, int maxLength) throws Exception {
    @Cleanup CleanupHelper cleanupHelper = new CleanupHelper();
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    int containerId = 42;
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(maxLength);
    val config = getDefaultConfigBuilder(policy).build();
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    long offset = 0;
    // Epoch 1
    @Cleanup ChunkedSegmentStorage segmentStorage1 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreBeforeCrash, executorService(), config);
    segmentStorage1.initialize(epoch);
    segmentStorage1.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage1.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage1);
    checkSystemSegmentsLayout(segmentStorage1);
    // Simulate some writes to system segment, this should cause some new chunks being added.
    val h = segmentStorage1.openWrite(systemSegmentName).join();
    val b1 = validWriteBeforeFailure.getBytes();
    byte[] garbage1 = initialGarbageThatIsTruncated.getBytes();
    int garbage1Length = garbage1.length;
    segmentStorage1.write(h, offset, new ByteArrayInputStream(garbage1), garbage1Length, null).join();
    offset += garbage1Length;
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
    offset += b1.length;
    segmentStorage1.truncate(h, garbage1Length, null).join();
    // Epoch 2
    epoch++;
    @Cleanup ChunkedSegmentStorage segmentStorage2 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
    segmentStorage2.initialize(epoch);
    segmentStorage2.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    segmentStorage2.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage2);
    checkSystemSegmentsLayout(segmentStorage2);
    val h2 = segmentStorage2.openWrite(systemSegmentName).join();
    // Write Junk Data to both system segment and journal file.
    val innerGarbageBytes = garbageAfterFailure.getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(innerGarbageBytes), innerGarbageBytes.length, null).join();
    val b2 = validWriteAfterFailure.getBytes();
    segmentStorage2.write(h2, offset, new ByteArrayInputStream(b2), b2.length, null).join();
    offset += b2.length;
    val info = segmentStorage2.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(b1.length + b2.length + garbage1Length, info.getLength());
    Assert.assertEquals(garbage1Length, info.getStartOffset());
    byte[] out = new byte[b1.length + b2.length];
    val hr = segmentStorage2.openRead(systemSegmentName).join();
    segmentStorage2.read(hr, garbage1Length, out, 0, b1.length + b2.length, null).join();
    Assert.assertEquals(validWriteBeforeFailure + validWriteAfterFailure, new String(out));
}

Example 3 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleBootstrapWithOneFailover.

/**
 * Tests a scenario when there is only one fail over.
 * The test adds a few chunks to the system segments and then fails over.
 * The new instance should read the journal log file and recreate the layout of system segments.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleBootstrapWithOneFailover() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    int containerId = 42;
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    int maxLength = 8;
    long epoch = 1;
    val policy = new SegmentRollingPolicy(maxLength);
    val config = getDefaultConfigBuilder(policy).build();
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    // Init
    long offset = 0;
    // Start container with epoch 1
    @Cleanup ChunkedSegmentStorage segmentStorage1 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreBeforeCrash, executorService(), config);
    segmentStorage1.initialize(epoch);
    segmentStorage1.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage1.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage1);
    checkSystemSegmentsLayout(segmentStorage1);
    // Simulate some writes to system segment, this should cause some new chunks being added.
    val h = segmentStorage1.openWrite(systemSegmentName).join();
    val b1 = "Hello".getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b1), b1.length, null).join();
    offset += b1.length;
    val b2 = " World".getBytes();
    segmentStorage1.write(h, offset, new ByteArrayInputStream(b2), b2.length, null).join();
    offset += b2.length;
    // Step 2
    // Start container with epoch 2
    epoch++;
    @Cleanup ChunkedSegmentStorage segmentStorage2 = new ChunkedSegmentStorage(containerId, chunkStorage, metadataStoreAfterCrash, executorService(), config);
    segmentStorage2.initialize(epoch);
    segmentStorage2.getGarbageCollector().initialize(new InMemoryTaskQueueManager()).join();
    // Bootstrap
    segmentStorage2.bootstrap(snapshotInfoStore, null).join();
    deleteGarbage(segmentStorage2);
    checkSystemSegmentsLayout(segmentStorage2);
    // Validate
    val info = segmentStorage2.getStreamSegmentInfo(systemSegmentName, null).join();
    Assert.assertEquals(b1.length + b2.length, info.getLength());
    byte[] out = new byte[b1.length + b2.length];
    val hr = segmentStorage2.openRead(systemSegmentName).join();
    segmentStorage2.read(hr, 0, out, 0, b1.length + b2.length, null).join();
    Assert.assertEquals("Hello World", new String(out));
}

Example 4 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleChunkAddition.

/**
 * Test simple chunk addition.
 * We failover two times to test correct interaction between snapshot and system logs.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleChunkAddition() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    int containerId = 42;
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    @Cleanup val garbageCollector1 = new GarbageCollector(containerId, chunkStorage, metadataStoreBeforeCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector1.initialize(new InMemoryTaskQueueManager()).join();
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(2);
    val config = getDefaultConfigBuilder(policy).build();
    // Inital set of additions
    SystemJournal systemJournalBefore = new SystemJournal(containerId, chunkStorage, metadataStoreBeforeCrash, garbageCollector1, config, executorService());
    systemJournalBefore.bootstrap(epoch, snapshotInfoStore).join();
    String lastChunk = null;
    long totalBytesWritten = 0;
    for (int i = 0; i < 10; i++) {
        String newChunk = "chunk" + i;
        val h = chunkStorage.createWithContent(newChunk, Math.toIntExact(policy.getMaxLength()), new ByteArrayInputStream(new byte[Math.toIntExact(policy.getMaxLength())])).get();
        totalBytesWritten += policy.getMaxLength();
        systemJournalBefore.commitRecord(SystemJournal.ChunkAddedRecord.builder().segmentName(systemSegmentName).offset(policy.getMaxLength() * i).newChunkName(newChunk).oldChunkName(lastChunk).build()).join();
        lastChunk = newChunk;
    }
    Assert.assertEquals(policy.getMaxLength() * 10, totalBytesWritten);
    // Failover
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    @Cleanup val garbageCollector2 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector2.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash, garbageCollector2, config, executorService());
    systemJournalAfter.bootstrap(epoch + 1, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash, systemSegmentName, policy.getMaxLength(), 10);
    TestUtils.checkSegmentBounds(metadataStoreAfterCrash, systemSegmentName, 0, totalBytesWritten);
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash2 = getMetadataStore();
    @Cleanup val garbageCollector3 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash2, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector3.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter2 = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash2, garbageCollector3, config, executorService());
    systemJournalAfter2.bootstrap(epoch + 2, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash2, systemSegmentName, policy.getMaxLength(), 10);
}

Example 5 with InMemorySnapshotInfoStore

use of io.pravega.segmentstore.storage.mocks.InMemorySnapshotInfoStore in project pravega by pravega.

the class SystemJournalTests method testSimpleOperationSequence.

/**
 * Test simple series of operations.
 *
 * @throws Exception Throws exception in case of any error.
 */
@Test
public void testSimpleOperationSequence() throws Exception {
    @Cleanup ChunkStorage chunkStorage = getChunkStorage();
    @Cleanup ChunkMetadataStore metadataStoreBeforeCrash = getMetadataStore();
    int containerId = 42;
    val data = new InMemorySnapshotInfoStore();
    val snapshotInfoStore = new SnapshotInfoStore(containerId, snapshotId -> data.setSnapshotId(containerId, snapshotId), () -> data.getSnapshotId(containerId));
    @Cleanup val garbageCollector1 = new GarbageCollector(containerId, chunkStorage, metadataStoreBeforeCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector1.initialize(new InMemoryTaskQueueManager()).join();
    String systemSegmentName = SystemJournal.getChunkStorageSystemSegments(containerId)[0];
    long epoch = 1;
    val policy = new SegmentRollingPolicy(2);
    val config = getDefaultConfigBuilder(policy).build();
    // Inital set of additions
    SystemJournal systemJournalBefore = new SystemJournal(containerId, chunkStorage, metadataStoreBeforeCrash, garbageCollector1, config, executorService());
    systemJournalBefore.bootstrap(epoch, snapshotInfoStore).join();
    String lastChunk = null;
    long totalBytesWritten = 0;
    for (int i = 0; i < 10; i++) {
        String newChunk = "chunk" + i;
        val h = chunkStorage.createWithContent(newChunk, Math.toIntExact(policy.getMaxLength()), new ByteArrayInputStream(new byte[Math.toIntExact(policy.getMaxLength())])).get();
        totalBytesWritten += policy.getMaxLength();
        systemJournalBefore.commitRecord(SystemJournal.ChunkAddedRecord.builder().segmentName(systemSegmentName).offset(policy.getMaxLength() * i).newChunkName(newChunk).oldChunkName(lastChunk).build()).join();
        lastChunk = newChunk;
    }
    Assert.assertEquals(policy.getMaxLength() * 10, totalBytesWritten);
    // Failover
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash = getMetadataStore();
    @Cleanup val garbageCollector2 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector2.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash, garbageCollector2, config, executorService());
    systemJournalAfter.bootstrap(epoch + 1, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash, systemSegmentName, policy.getMaxLength(), 10);
    TestUtils.checkSegmentBounds(metadataStoreAfterCrash, systemSegmentName, 0, totalBytesWritten);
    @Cleanup ChunkMetadataStore metadataStoreAfterCrash2 = getMetadataStore();
    @Cleanup val garbageCollector3 = new GarbageCollector(containerId, chunkStorage, metadataStoreAfterCrash2, ChunkedSegmentStorageConfig.DEFAULT_CONFIG, executorService());
    garbageCollector3.initialize(new InMemoryTaskQueueManager()).join();
    SystemJournal systemJournalAfter2 = new SystemJournal(containerId, chunkStorage, metadataStoreAfterCrash2, garbageCollector3, config, executorService());
    systemJournalAfter2.bootstrap(epoch + 2, snapshotInfoStore).join();
    TestUtils.checkSegmentLayout(metadataStoreAfterCrash2, systemSegmentName, policy.getMaxLength(), 10);
}