Package co.cask.tephra.persist

Examples of co.cask.tephra.persist.TransactionSnapshot

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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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  }

  @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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  }

  @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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    String localTestDir = "/tmp/transactionDataJanitorTest";
    conf.set(TxConstants.Manager.CFG_TX_SNAPSHOT_DIR, localTestDir);
    conf.set(TxConstants.Persist.CFG_TX_SNAPHOT_CODEC_CLASSES, DefaultSnapshotCodec.class.getName());

    // write an initial transaction snapshot
    TransactionSnapshot snapshot =
      TransactionSnapshot.copyFrom(
        System.currentTimeMillis(), V[6] - 1, V[7], invalidSet,
        // this will set visibility upper bound to V[6]
        Maps.newTreeMap(ImmutableSortedMap.of(V[6], new TransactionManager.InProgressTx(V[6] - 1, Long.MAX_VALUE))),
        new HashMap<Long, Set<ChangeId>>(), new TreeMap<Long, Set<ChangeId>>());
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  public void testTransactionStateCache() throws Exception {
    TransactionStateCache cache = new TransactionStateCache();
    cache.setConf(conf);
    cache.startAndWait();
    // verify that the transaction snapshot read matches what we wrote in setupBeforeClass()
    TransactionSnapshot cachedSnapshot = cache.getLatestState();
    assertNotNull(cachedSnapshot);
    assertEquals(invalidSet, cachedSnapshot.getInvalid());
    cache.stopAndWait();
  }
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    Transaction txPreReset = client.startShort();
    long currentTs = System.currentTimeMillis();
    client.resetState();

    TransactionSnapshot snapshot = stateStorage.getLatestSnapshot();
    Assert.assertTrue(snapshot.getTimestamp() >= currentTs);
    Assert.assertEquals(0, snapshot.getInvalid().size());
    Assert.assertEquals(0, snapshot.getInProgress().size());
    Assert.assertEquals(0, snapshot.getCommittingChangeSets().size());
    Assert.assertEquals(0, snapshot.getCommittedChangeSets().size());

    // confirm that transaction IDs are not reset
    Transaction txPostReset = client.startShort();
    Assert.assertTrue("New tx ID should be greater than last ID before reset",
                      txPostReset.getWritePointer() > txPreReset.getWritePointer());
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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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