Examples with LogSegmentMetadata org.apache.distributedlog.LogSegmentMetadata used on opensource projects

Example 6 with LogSegmentMetadata

use of org.apache.distributedlog.LogSegmentMetadata in project bookkeeper by apache.

the class LogSegmentMetadataStoreUpdater method updateLastRecord.

@Override
public CompletableFuture<LogSegmentMetadata> updateLastRecord(LogSegmentMetadata segment, LogRecordWithDLSN record) {
    DLSN dlsn = record.getDlsn();
    checkState(!segment.isInProgress(), "Updating last dlsn for an inprogress log segment isn't supported.");
    checkArgument(segment.isDLSNinThisSegment(dlsn), "DLSN " + dlsn + " doesn't belong to segment " + segment);
    final LogSegmentMetadata newSegment = segment.mutator().setLastDLSN(dlsn).setLastTxId(record.getTransactionId()).setRecordCount(record).build();
    return updateSegmentMetadata(newSegment);
}

Example 7 with LogSegmentMetadata

use of org.apache.distributedlog.LogSegmentMetadata in project bookkeeper by apache.

the class LogSegmentMetadataStoreUpdater method setLogSegmentTruncated.

@Override
public LogSegmentMetadata setLogSegmentTruncated(Transaction<Object> txn, LogSegmentMetadata segment) {
    final LogSegmentMetadata newSegment = segment.mutator().setTruncationStatus(LogSegmentMetadata.TruncationStatus.TRUNCATED).build();
    addNewSegmentAndDeleteOldSegment(txn, newSegment, segment);
    return newSegment;
}

Example 8 with LogSegmentMetadata

use of org.apache.distributedlog.LogSegmentMetadata in project bookkeeper by apache.

the class LogSegmentMetadataStoreUpdater method setLogSegmentPartiallyTruncated.

@Override
public LogSegmentMetadata setLogSegmentPartiallyTruncated(Transaction<Object> txn, LogSegmentMetadata segment, DLSN minActiveDLSN) {
    final LogSegmentMetadata newSegment = segment.mutator().setTruncationStatus(LogSegmentMetadata.TruncationStatus.PARTIALLY_TRUNCATED).setMinActiveDLSN(minActiveDLSN).build();
    addNewSegmentAndDeleteOldSegment(txn, newSegment, segment);
    return newSegment;
}

Example 9 with LogSegmentMetadata

use of org.apache.distributedlog.LogSegmentMetadata in project bookkeeper by apache.

the class TestBKLogSegmentEntryReader method testMaxPrefetchEntriesSmallBatch.

@Test(timeout = 60000)
public void testMaxPrefetchEntriesSmallBatch() throws Exception {
    DistributedLogConfiguration confLocal = new DistributedLogConfiguration();
    confLocal.addConfiguration(conf);
    confLocal.setOutputBufferSize(0);
    confLocal.setPeriodicFlushFrequencyMilliSeconds(0);
    confLocal.setImmediateFlushEnabled(false);
    confLocal.setNumPrefetchEntriesPerLogSegment(2);
    confLocal.setMaxPrefetchEntriesPerLogSegment(10);
    DistributedLogManager dlm = createNewDLM(confLocal, runtime.getMethodName());
    generateCompletedLogSegments(dlm, confLocal, 1, 20);
    List<LogSegmentMetadata> segments = dlm.getLogSegments();
    assertEquals(segments.size() + " log segments found, expected to be only one", 1, segments.size());
    BKLogSegmentEntryReader reader = createEntryReader(segments.get(0), 0, confLocal);
    reader.start();
    // wait for the read ahead entries to become available
    while (reader.readAheadEntries.size() < 10) {
        TimeUnit.MILLISECONDS.sleep(10);
    }
    long txId = 1L;
    long entryId = 0L;
    assertEquals(10, reader.readAheadEntries.size());
    assertEquals(10, reader.getNextEntryId());
    assertFalse(reader.hasCaughtUpOnInprogress());
    // read first entry
    Entry.Reader entryReader = Utils.ioResult(reader.readNext(1)).get(0);
    LogRecordWithDLSN record = entryReader.nextRecord();
    while (null != record) {
        if (!record.isControl()) {
            DLMTestUtil.verifyLogRecord(record);
            assertEquals(txId, record.getTransactionId());
            ++txId;
        }
        DLSN dlsn = record.getDlsn();
        assertEquals(1L, dlsn.getLogSegmentSequenceNo());
        assertEquals(entryId, dlsn.getEntryId());
        record = entryReader.nextRecord();
    }
    ++entryId;
    assertEquals(2L, txId);
    // wait for the read ahead entries to become 10 again
    while (reader.readAheadEntries.size() < 10) {
        TimeUnit.MILLISECONDS.sleep(10);
    }
    assertEquals(10, reader.readAheadEntries.size());
    assertEquals(11, reader.getNextEntryId());
    assertFalse(reader.hasCaughtUpOnInprogress());
    Utils.close(reader);
}

Example 10 with LogSegmentMetadata

use of org.apache.distributedlog.LogSegmentMetadata in project bookkeeper by apache.

the class TestBKLogSegmentEntryReader method testReadEntriesFromInprogressSegment.

@Test(timeout = 60000)
public void testReadEntriesFromInprogressSegment() throws Exception {
    DistributedLogConfiguration confLocal = new DistributedLogConfiguration();
    confLocal.addConfiguration(conf);
    confLocal.setOutputBufferSize(0);
    confLocal.setPeriodicFlushFrequencyMilliSeconds(0);
    confLocal.setImmediateFlushEnabled(false);
    confLocal.setNumPrefetchEntriesPerLogSegment(20);
    confLocal.setMaxPrefetchEntriesPerLogSegment(20);
    DistributedLogManager dlm = createNewDLM(confLocal, runtime.getMethodName());
    AsyncLogWriter writer = createInprogressLogSegment(dlm, confLocal, 5);
    List<LogSegmentMetadata> segments = dlm.getLogSegments();
    assertEquals(segments.size() + " log segments found, expected to be only one", 1, segments.size());
    BKLogSegmentEntryReader reader = createEntryReader(segments.get(0), 0, confLocal);
    reader.start();
    long expectedLastAddConfirmed = 8L;
    // wait until sending out all prefetch requests
    while (reader.readAheadEntries.size() < expectedLastAddConfirmed + 2) {
        TimeUnit.MILLISECONDS.sleep(10);
    }
    assertEquals(expectedLastAddConfirmed + 2, reader.getNextEntryId());
    long txId = 1L;
    long entryId = 0L;
    while (true) {
        Entry.Reader entryReader = Utils.ioResult(reader.readNext(1)).get(0);
        LogRecordWithDLSN record = entryReader.nextRecord();
        while (null != record) {
            if (!record.isControl()) {
                DLMTestUtil.verifyLogRecord(record);
                assertEquals(txId, record.getTransactionId());
                ++txId;
            }
            DLSN dlsn = record.getDlsn();
            assertEquals(1L, dlsn.getLogSegmentSequenceNo());
            assertEquals(entryId, dlsn.getEntryId());
            record = entryReader.nextRecord();
        }
        ++entryId;
        if (entryId == expectedLastAddConfirmed + 1) {
            break;
        }
    }
    assertEquals(6L, txId);
    CompletableFuture<List<Entry.Reader>> nextReadFuture = reader.readNext(1);
    // write another record to commit previous writes
    Utils.ioResult(writer.write(DLMTestUtil.getLogRecordInstance(txId)));
    // the long poll will be satisfied
    List<Entry.Reader> nextReadEntries = Utils.ioResult(nextReadFuture);
    assertEquals(1, nextReadEntries.size());
    assertTrue(reader.hasCaughtUpOnInprogress());
    Entry.Reader entryReader = nextReadEntries.get(0);
    LogRecordWithDLSN record = entryReader.nextRecord();
    assertNotNull(record);
    assertTrue(record.isControl());
    assertNull(entryReader.nextRecord());
    // once the read is advanced, we will prefetch next record
    while (reader.getNextEntryId() <= entryId) {
        TimeUnit.MILLISECONDS.sleep(10);
    }
    assertEquals(entryId + 2, reader.getNextEntryId());
    assertEquals(1, reader.readAheadEntries.size());
    Utils.close(reader);
    Utils.close(writer);
}