Package com.orientechnologies.orient.core.storage.impl.local.paginated.wal

Examples of com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OLogSequenceNumber

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        OCacheEntry cacheEntry = content.get(index);
        if (cacheEntry != null)
          return cacheEntry;

        ODirectMemoryPointer directMemoryPointer = new ODirectMemoryPointer(new byte[pageSize + 2 * ODurablePage.PAGE_PADDING]);
        OCachePointer cachePointer = new OCachePointer(directMemoryPointer, new OLogSequenceNumber(0, 0));
        cachePointer.incrementReferrer();

        cacheEntry = new OCacheEntry(id, index, cachePointer, false);

        OCacheEntry oldCacheEntry = content.putIfAbsent(index, cacheEntry);
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            index = lastIndex + 1;
          }

          final ODirectMemoryPointer directMemoryPointer = new ODirectMemoryPointer(new byte[pageSize + 2
              * ODurablePage.PAGE_PADDING]);
          final OCachePointer cachePointer = new OCachePointer(directMemoryPointer, new OLogSequenceNumber(0, 0));
          cachePointer.incrementReferrer();

          cacheEntry = new OCacheEntry(id, index, cachePointer, false);

          OCacheEntry oldCacheEntry = content.putIfAbsent(index, cacheEntry);
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*/
@Test
public class SBTreeValuePageTest {
  public void fillPageDataTest() throws Exception {
    ODirectMemoryPointer pointerOne = new ODirectMemoryPointer(ODurablePage.MAX_PAGE_SIZE_BYTES + ODurablePage.PAGE_PADDING);
    OCachePointer cachePointerOne = new OCachePointer(pointerOne, new OLogSequenceNumber(0, 0));
    cachePointerOne.incrementReferrer();

    OCacheEntry cacheEntryOne = new OCacheEntry(0, 0, cachePointerOne, false);
    OSBTreeValuePage valuePageOne = new OSBTreeValuePage(cacheEntryOne, ODurablePage.TrackMode.NONE, true);

    byte[] data = new byte[ODurablePage.MAX_PAGE_SIZE_BYTES + 100];
    Random random = new Random();
    random.nextBytes(data);

    int offset = valuePageOne.fillBinaryContent(data, 0);
    Assert.assertEquals(offset, OSBTreeValuePage.MAX_BINARY_VALUE_SIZE);

    ODirectMemoryPointer pointerTwo = new ODirectMemoryPointer(ODurablePage.MAX_PAGE_SIZE_BYTES);
    OCachePointer cachePointerTwo = new OCachePointer(pointerTwo, new OLogSequenceNumber(0, 0));
    cachePointerTwo.incrementReferrer();

    OCacheEntry cacheEntryTwo = new OCacheEntry(0, 0, cachePointerTwo, false);
    OSBTreeValuePage valuePageTwo = new OSBTreeValuePage(cacheEntryTwo, ODurablePage.TrackMode.NONE, true);
    offset = valuePageTwo.fillBinaryContent(data, offset);
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    cachePointerTwo.decrementReferrer();
  }

  public void testFreeListPointer() throws Exception {
    ODirectMemoryPointer pointer = new ODirectMemoryPointer(ODurablePage.MAX_PAGE_SIZE_BYTES + ODurablePage.PAGE_PADDING);
    OCachePointer cachePointer = new OCachePointer(pointer, new OLogSequenceNumber(0, 0));
    cachePointer.incrementReferrer();

    OCacheEntry cacheEntry = new OCacheEntry(0, 0, cachePointer, false);
    OSBTreeValuePage valuePage = new OSBTreeValuePage(cacheEntry, ODurablePage.TrackMode.NONE, true);
    valuePage.setNextFreeListPage(124);
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        writeAheadLog.flush();

        if (configuration != null)
          configuration.synch();

        final OLogSequenceNumber lastLSN = writeAheadLog.logFullCheckpointStart();
        diskCache.flushBuffer();
        writeAheadLog.logFullCheckpointEnd();
        writeAheadLog.flush();

        writeAheadLog.cutTill(lastLSN);
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    if (iClusterId > clusters.size() - 1)
      throw new IllegalArgumentException("Cluster segment #" + iClusterId + " does not exist in database '" + name + "'");
  }

  private List<OLogSequenceNumber> readOperationUnit(OLogSequenceNumber startLSN, OOperationUnitId unitId) throws IOException {
    final OLogSequenceNumber beginSequence = writeAheadLog.begin();

    if (startLSN == null)
      startLSN = beginSequence;

    if (startLSN.compareTo(beginSequence) < 0)
      startLSN = beginSequence;

    List<OLogSequenceNumber> operationUnit = new ArrayList<OLogSequenceNumber>();

    OLogSequenceNumber lsn = startLSN;
    while (lsn != null) {
      OWALRecord record = writeAheadLog.read(lsn);
      if (!(record instanceof OOperationUnitRecord)) {
        lsn = writeAheadLog.next(lsn);
        continue;
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      return;
    }

    OLogManager.instance().info(this, "Looking for last checkpoint...");

    OLogSequenceNumber lastCheckPoint;
    try {
      lastCheckPoint = writeAheadLog.getLastCheckpoint();
    } catch (OWALPageBrokenException e) {
      lastCheckPoint = null;
    }

    if (lastCheckPoint == null) {
      OLogManager.instance().info(this, "Checkpoints are absent, the restore will start from the beginning.");
      restoreFromBegging();
      return;
    }

    OWALRecord checkPointRecord;
    try {
      checkPointRecord = writeAheadLog.read(lastCheckPoint);
    } catch (OWALPageBrokenException e) {
      checkPointRecord = null;
    }

    if (checkPointRecord == null) {
      OLogManager.instance().info(this, "Checkpoints are absent, the restore will start from the beginning.");
      restoreFromBegging();
      return;
    }

    if (checkPointRecord instanceof OFuzzyCheckpointStartRecord) {
      OLogManager.instance().info(this, "Found FUZZY checkpoint.");

      boolean fuzzyCheckPointIsComplete = checkFuzzyCheckPointIsComplete(lastCheckPoint);
      if (!fuzzyCheckPointIsComplete) {
        OLogManager.instance().warn(this, "FUZZY checkpoint is not complete.");

        OLogSequenceNumber previousCheckpoint = ((OFuzzyCheckpointStartRecord) checkPointRecord).getPreviousCheckpoint();
        checkPointRecord = null;

        if (previousCheckpoint != null)
          checkPointRecord = writeAheadLog.read(previousCheckpoint);

        if (checkPointRecord != null) {
          OLogManager.instance().warn(this, "Restore will start from the previous checkpoint.");
          restoreFromCheckPoint((OAbstractCheckPointStartRecord) checkPointRecord);
        } else {
          OLogManager.instance().warn(this, "Restore will start from the beginning.");
          restoreFromBegging();
        }
      } else
        restoreFromCheckPoint((OAbstractCheckPointStartRecord) checkPointRecord);

      return;
    }

    if (checkPointRecord instanceof OFullCheckpointStartRecord) {
      OLogManager.instance().info(this, "FULL checkpoint found.");
      boolean fullCheckPointIsComplete = checkFullCheckPointIsComplete(lastCheckPoint);
      if (!fullCheckPointIsComplete) {
        OLogManager.instance().warn(this, "FULL checkpoint has not completed.");

        OLogSequenceNumber previousCheckpoint = ((OFullCheckpointStartRecord) checkPointRecord).getPreviousCheckpoint();
        checkPointRecord = null;
        if (previousCheckpoint != null)
          checkPointRecord = writeAheadLog.read(previousCheckpoint);

        if (checkPointRecord != null) {
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  }

  private boolean checkFullCheckPointIsComplete(OLogSequenceNumber lastCheckPoint) throws IOException {
    try {
      OLogSequenceNumber lsn = writeAheadLog.next(lastCheckPoint);

      while (lsn != null) {
        OWALRecord walRecord = writeAheadLog.read(lsn);
        if (walRecord instanceof OCheckpointEndRecord)
          return true;
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    return false;
  }

  private boolean checkFuzzyCheckPointIsComplete(OLogSequenceNumber lastCheckPoint) throws IOException {
    try {
      OLogSequenceNumber lsn = writeAheadLog.next(lastCheckPoint);

      while (lsn != null) {
        OWALRecord walRecord = writeAheadLog.read(lsn);
        if (walRecord instanceof OFuzzyCheckpointEndRecord)
          return true;
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  private void restoreFromFullCheckPoint(OFullCheckpointStartRecord checkPointRecord) throws IOException {
    OLogManager.instance().info(this, "Data restore procedure from full checkpoint is started. Restore is performed from LSN %s",
        checkPointRecord.getLsn());

    final OLogSequenceNumber lsn = writeAheadLog.next(checkPointRecord.getLsn());
    restoreFrom(lsn);
  }
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Related Classes of com.orientechnologies.orient.core.storage.impl.local.paginated.wal.OLogSequenceNumber

  • com.orientechnologies.orient.core.index.hashindex.local.cache.LRUListTest
  • com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache
  • com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache$PeriodicFlushTask
  • com.orientechnologies.orient.core.index.hashindex.local.cache.WOWCacheTest
  • com.orientechnologies.orient.core.index.sbtree.local.ONullBucketTest
  • com.orientechnologies.orient.core.index.sbtree.local.SBTreeLeafBucketTest
  • com.orientechnologies.orient.core.index.sbtree.local.SBTreeNonLeafBucketTest
  • com.orientechnologies.orient.core.index.sbtree.local.SBTreeValuePageTest
  • com.orientechnologies.orient.core.index.sbtreebonsai.local.OSBTreeBonsaiLeafBucketTest
  • com.orientechnologies.orient.core.index.sbtreebonsai.local.OSBTreeBonsaiNonLeafBucketTest
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