Package co.cask.tephra

Examples of co.cask.tephra.Transaction

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    long readPointer = dataInput.readLong();
    long writePointer = dataInput.readLong();
    long firstShortInProgress = dataInput.readLong();
    long[] inProgress = readLongArray(dataInput);
    long[] invalids = readLongArray(dataInput);
    return new Transaction(readPointer, writePointer, invalids, inProgress, firstShortInProgress);
  }
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  }

  @Override
  public boolean commitTx() throws Exception {
    Preconditions.checkState(transaction != null, "Commit without starting transaction.");
    Transaction tx = transaction;
    transaction = null;
    List<QueueEntry> entries = Lists.newArrayListWithCapacity(queue.size());
    queue.drainTo(entries);
    lastEnqueueCount = entries.size();
    lastEnqueueBytes = persist(entries, tx);
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    }
  }

  @Override
  public boolean rollbackTx() throws Exception {
    Transaction tx = transaction;
    transaction = null;
    doRollback();
    return true;
  }
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    long readPointer = dataInput.readLong();
    long writePointer = dataInput.readLong();
    long firstShortInProgress = dataInput.readLong();
    long[] inProgress = readLongArray(dataInput);
    long[] invalids = readLongArray(dataInput);
    return new Transaction(readPointer, writePointer, invalids, inProgress, firstShortInProgress);
  }
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public class DequeueScanObserver extends BaseRegionObserver {
  @Override
  public RegionScanner preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan, RegionScanner s)
    throws IOException {
    ConsumerConfig consumerConfig = DequeueScanAttributes.getConsumerConfig(scan);
    Transaction tx = DequeueScanAttributes.getTx(scan);
    byte[] queueRowPrefix = DequeueScanAttributes.getQueueRowPrefix(scan);

    if (consumerConfig == null || tx == null || queueRowPrefix == null) {
      return super.preScannerOpen(e, scan, s);
    }
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public class DequeueScanObserver extends BaseRegionObserver {
  @Override
  public RegionScanner preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan, RegionScanner s)
    throws IOException {
    ConsumerConfig consumerConfig = DequeueScanAttributes.getConsumerConfig(scan);
    Transaction tx = DequeueScanAttributes.getTx(scan);
    byte[] queueRowPrefix = DequeueScanAttributes.getQueueRowPrefix(scan);

    if (consumerConfig == null || tx == null || queueRowPrefix == null) {
      return super.preScannerOpen(e, scan, s);
    }
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     *
     *   read ptr = 5
     *   write ptr = 6
     */

    Transaction tx1 = txManager.startShort();
    assertTrue(txManager.canCommit(tx1, EMPTY_CHANGESET));
    assertTrue(txManager.commit(tx1));

    Transaction tx2 = txManager.startShort();
    assertTrue(txManager.canCommit(tx2, EMPTY_CHANGESET));
    assertTrue(txManager.commit(tx2));

    Transaction tx3 = txManager.startShort();
    Transaction tx4 = txManager.startShort();
    txManager.invalidate(tx4.getWritePointer());

    Transaction tx5 = txManager.startShort();
    assertTrue(txManager.canCommit(tx5, EMPTY_CHANGESET));
    assertTrue(txManager.commit(tx5));

    Transaction tx6 = txManager.startShort();

    Map<byte[], Long> ttls = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
    Filter filter = createFilter(tx6, ttls);

    assertEquals(Filter.ReturnCode.INCLUDE_AND_NEXT_COL,
                 filter.filterKeyValue(newKeyValue("row1", "val1", tx6.getWritePointer())));
    assertEquals(Filter.ReturnCode.INCLUDE_AND_NEXT_COL,
                 filter.filterKeyValue(newKeyValue("row1", "val1", tx5.getWritePointer())));
    assertEquals(Filter.ReturnCode.SKIP,
                 filter.filterKeyValue(newKeyValue("row1", "val1", tx4.getWritePointer())));
    assertEquals(Filter.ReturnCode.SKIP,
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    Map<byte[], Long> ttls = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
    ttls.put(FAM, 10L);
    ttls.put(FAM2, 30L);
    ttls.put(FAM3, 0L);

    Transaction tx = txManager.startShort();
    long now = tx.getVisibilityUpperBound();
    Filter filter = createFilter(tx, ttls);
    assertEquals(Filter.ReturnCode.INCLUDE_AND_NEXT_COL,
                 filter.filterKeyValue(newKeyValue("row1", FAM, "val1", now)));
    assertEquals(Filter.ReturnCode.INCLUDE_AND_NEXT_COL,
                 filter.filterKeyValue(newKeyValue("row1", FAM, "val1", now - 1 * TxConstants.MAX_TX_PER_MS)));
 
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  }

  @Override
  public void preGetOp(ObserverContext<RegionCoprocessorEnvironment> e, Get get, List<Cell> results)
    throws IOException {
    Transaction tx = txCodec.getFromOperation(get);
    if (tx != null) {
      get.setMaxVersions(tx.excludesSize() + 1);
      get.setTimeRange(TxUtils.getOldestVisibleTimestamp(ttlByFamily, tx), TxUtils.getMaxVisibleTimestamp(tx));
      Filter newFilter = Filters.combine(getTransactionFilter(tx), get.getFilter());
      get.setFilter(newFilter);
    }
  }
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  }

  @Override
  public RegionScanner preScannerOpen(ObserverContext<RegionCoprocessorEnvironment> e, Scan scan, RegionScanner s)
    throws IOException {
    Transaction tx = txCodec.getFromOperation(scan);
    if (tx != null) {
      scan.setMaxVersions(tx.excludesSize() + 1);
      scan.setTimeRange(TxUtils.getOldestVisibleTimestamp(ttlByFamily, tx), TxUtils.getMaxVisibleTimestamp(tx));
      Filter newFilter = Filters.combine(getTransactionFilter(tx), scan.getFilter());
      scan.setFilter(newFilter);
    }
    return s;
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Related Classes of co.cask.tephra.Transaction

  • co.cask.cdap.data2.transaction.queue.AbstractQueueProducer
  • co.cask.cdap.data2.transaction.queue.coprocessor.hbase94.DequeueScanObserver
  • co.cask.cdap.data2.transaction.queue.coprocessor.hbase96.DequeueScanObserver
  • co.cask.cdap.data2.transaction.queue.hbase.DequeueScanAttributes
  • co.cask.cdap.explore.service.hive.BaseHiveExploreService
  • co.cask.cdap.hive.datasets.DatasetAccessor
  • co.cask.cdap.internal.app.runtime.batch.MapReduceRuntimeService
  • co.cask.cdap.internal.app.runtime.spark.SparkRuntimeService
  • co.cask.tephra.distributed.ConverterUtils
  • co.cask.tephra.distributed.TransactionServiceClient
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