Package co.cask.tephra

Examples of co.cask.tephra.Transaction

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  }

  @Override
  public void preGet(ObserverContext<RegionCoprocessorEnvironment> e, Get get, List<KeyValue> results)
    throws IOException {
    Transaction tx = txCodec.getFromOperation(get);
    if (tx != null) {
      if (LOG.isTraceEnabled()) {
        LOG.trace("Applying filter to GET for transaction " + tx.getWritePointer());
      }
      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 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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      }
      return null;
    }

    // construct a dummy transaction from the latest snapshot
    Transaction dummyTx = TxUtils.createDummyTransaction(snapshot);
    Scan scan = new Scan();
    // does not current support max versions setting per family
    scan.setMaxVersions(dummyTx.excludesSize() + 1);
    scan.setFilter(new IncludeInProgressFilter(dummyTx.getVisibilityUpperBound(),
                                               snapshot.getInvalid(),
                                               getTransactionFilter(dummyTx)));

    return new StoreScanner(store, store.getScanInfo(), scan, scanners,
                            type, store.getSmallestReadPoint(), earliestPutTs);
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    long[] inProgress = new long[tx.inProgress.size()];
    i = 0;
    for (Long txid : tx.inProgress) {
      inProgress[i++] = txid;
    }
    return new Transaction(tx.readPointer, tx.writePointer,
                                                             invalids, inProgress, tx.getFirstShort());
  }
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   * this can still be useful for filtering data according to the snapshot's state.  Instead of the actual
   * write pointer from the snapshot, however, we use {@code Long.MAX_VALUE} to avoid mis-identifying any cells as
   * being written by this transaction (and therefore visible).
   */
  public static Transaction createDummyTransaction(TransactionSnapshot snapshot) {
    return new Transaction(snapshot.getReadPointer(), Long.MAX_VALUE,
                           Longs.toArray(snapshot.getInvalid()),
                           Longs.toArray(snapshot.getInProgress().keySet()),
                           TxUtils.getFirstShortInProgress(snapshot.getInProgress()));
  }
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  @Override
  public Transaction startShort() {
    long wp = currentTxPointer++;
    // NOTE: -1 here is because we have logic that uses (readpointer + 1) as a "exclusive stop key" in some datasets
    return new Transaction(
      Long.MAX_VALUE - 1, wp, new long[0], new long[0],
      Transaction.NO_TX_IN_PROGRESS);
  }
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      if (generator.compareAndSet(wp, advanced)) {
        wp = advanced;
      }
    }
    // NOTE: -1 here is because we have logic that uses (readpointer + 1) as a "exclusive stop key" in some datasets
    return new Transaction(
      Long.MAX_VALUE - 1, wp, new long[0], new long[0],
      Transaction.NO_TX_IN_PROGRESS);
  }
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  • 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
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  • co.cask.cdap.internal.app.runtime.spark.SparkRuntimeService
  • co.cask.tephra.distributed.ConverterUtils
  • co.cask.tephra.distributed.TransactionServiceClient
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