Package co.cask.tephra.persist

Examples of co.cask.tephra.persist.TransactionSnapshot

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  }

  @Override
  public InternalScanner preFlush(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                  InternalScanner scanner) throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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  }

  @Override
  public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                    InternalScanner scanner) throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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  @Override
  public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                    InternalScanner scanner, CompactionRequest request)
    throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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      Collection<Long> invalid = decodeInvalid(decoder);
      NavigableMap<Long, TransactionManager.InProgressTx> inProgress = decodeInProgress(decoder);
      NavigableMap<Long, Set<ChangeId>> committing = decodeChangeSets(decoder);
      NavigableMap<Long, Set<ChangeId>> committed = decodeChangeSets(decoder);

      return new TransactionSnapshot(timestamp, readPointer, writePointer, invalid, inProgress,
                                     committing, committed);
    } catch (IOException e) {
      LOG.error("Unable to deserialize transaction state: ", e);
      throw Throwables.propagate(e);
    }
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      }
    }
  }

  private void executeViewMode() {
    TransactionSnapshot snapshot = null;
    if (hostname != null && portNumber != null) {
      // Take new snapshot and download it
      snapshot = takeSnapshot();
    } else if (existingFilename != null) {
      // Retrieve saved snapshot
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    try {
      System.out.println("Retrieving snapshot from file " + existingFilename);
      File snapshotFile = new File(existingFilename);
      FileInputStream fis = new FileInputStream(snapshotFile);
      try {
        TransactionSnapshot snapshot = codecProvider.decode(fis);
        System.out.println("Snapshot retrieved, timestamp is " + snapshot.getTimestamp() + " ms.");
        return snapshot;
      } finally {
        fis.close();
      }
    } catch (IOException e) {
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                         url.toURI() + ", timestamp is " + System.currentTimeMillis() + " ms");
      int responseCode = connection.getResponseCode();
      if (responseCode == 200) {
        // Retrieve and deserialize the snapshot
        InputStream input = connection.getInputStream();
        TransactionSnapshot snapshot;
        try {
          snapshot = codecProvider.decode(input);
        } finally {
          input.close();
        }
        System.out.println("Snapshot taken and retrieved properly, snapshot timestamp is " +
                           snapshot.getTimestamp() + " ms");

        if (persistingFilename != null) {
          // Persist the snapshot on disk for future queries and debugging
          File outputFile = new File(persistingFilename);
          OutputStream out = new FileOutputStream(outputFile);
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  }

  @Override
  public InternalScanner preFlush(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                  InternalScanner scanner) throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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  }

  @Override
  public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                    InternalScanner scanner, ScanType scanType) throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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  @Override
  public InternalScanner preCompact(ObserverContext<RegionCoprocessorEnvironment> e, Store store,
                                    InternalScanner scanner, ScanType scanType, CompactionRequest request)
    throws IOException {
    TransactionSnapshot snapshot = cache.getLatestState();
    if (snapshot != null) {
      return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner, snapshot.getVisibilityUpperBound());
    }
    return new IncrementSummingScanner(region, BATCH_UNLIMITED, scanner);
  }
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Related Classes of co.cask.tephra.persist.TransactionSnapshot

  • co.cask.cdap.data2.increment.hbase94.IncrementHandler
  • co.cask.cdap.data2.increment.hbase96.IncrementHandler
  • co.cask.cdap.data2.transaction.snapshot.AbstractSnapshotCodec
  • co.cask.cdap.data2.transaction.TransactionManagerDebuggerMain
  • co.cask.tephra.coprocessor.TransactionStateCache
  • co.cask.tephra.hbase94.coprocessor.TransactionProcessorTest
  • co.cask.tephra.hbase96.coprocessor.TransactionProcessorTest
  • co.cask.tephra.hbase98.coprocessor.TransactionProcessorTest
  • co.cask.tephra.snapshot.DefaultSnapshotCodec
  • co.cask.tephra.TransactionManager
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