コード例 #1
0
  private void testAppend(String bpid, FsDatasetImpl dataSet, ExtendedBlock[] blocks)
      throws IOException {
    long newGS = blocks[FINALIZED].getGenerationStamp() + 1;
    final FsVolumeImpl v =
        (FsVolumeImpl) dataSet.volumeMap.get(bpid, blocks[FINALIZED].getLocalBlock()).getVolume();
    long available = v.getCapacity() - v.getDfsUsed();
    long expectedLen = blocks[FINALIZED].getNumBytes();
    try {
      v.decDfsUsed(bpid, -available);
      blocks[FINALIZED].setNumBytes(expectedLen + 100);
      dataSet.append(blocks[FINALIZED], newGS, expectedLen);
      Assert.fail("Should not have space to append to an RWR replica" + blocks[RWR]);
    } catch (DiskOutOfSpaceException e) {
      Assert.assertTrue(e.getMessage().startsWith("Insufficient space for appending to "));
    }
    v.decDfsUsed(bpid, available);
    blocks[FINALIZED].setNumBytes(expectedLen);

    newGS = blocks[RBW].getGenerationStamp() + 1;
    dataSet.append(blocks[FINALIZED], newGS, blocks[FINALIZED].getNumBytes()); // successful
    blocks[FINALIZED].setGenerationStamp(newGS);

    try {
      dataSet.append(
          blocks[TEMPORARY],
          blocks[TEMPORARY].getGenerationStamp() + 1,
          blocks[TEMPORARY].getNumBytes());
      Assert.fail("Should not have appended to a temporary replica " + blocks[TEMPORARY]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertEquals(
          ReplicaNotFoundException.UNFINALIZED_REPLICA + blocks[TEMPORARY], e.getMessage());
    }

    try {
      dataSet.append(blocks[RBW], blocks[RBW].getGenerationStamp() + 1, blocks[RBW].getNumBytes());
      Assert.fail("Should not have appended to an RBW replica" + blocks[RBW]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertEquals(
          ReplicaNotFoundException.UNFINALIZED_REPLICA + blocks[RBW], e.getMessage());
    }

    try {
      dataSet.append(blocks[RWR], blocks[RWR].getGenerationStamp() + 1, blocks[RBW].getNumBytes());
      Assert.fail("Should not have appended to an RWR replica" + blocks[RWR]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertEquals(
          ReplicaNotFoundException.UNFINALIZED_REPLICA + blocks[RWR], e.getMessage());
    }

    try {
      dataSet.append(blocks[RUR], blocks[RUR].getGenerationStamp() + 1, blocks[RUR].getNumBytes());
      Assert.fail("Should not have appended to an RUR replica" + blocks[RUR]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertEquals(
          ReplicaNotFoundException.UNFINALIZED_REPLICA + blocks[RUR], e.getMessage());
    }

    try {
      dataSet.append(
          blocks[NON_EXISTENT],
          blocks[NON_EXISTENT].getGenerationStamp(),
          blocks[NON_EXISTENT].getNumBytes());
      Assert.fail("Should not have appended to a non-existent replica " + blocks[NON_EXISTENT]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertEquals(
          ReplicaNotFoundException.NON_EXISTENT_REPLICA + blocks[NON_EXISTENT], e.getMessage());
    }

    newGS = blocks[FINALIZED].getGenerationStamp() + 1;
    dataSet.recoverAppend(blocks[FINALIZED], newGS, blocks[FINALIZED].getNumBytes()); // successful
    blocks[FINALIZED].setGenerationStamp(newGS);

    try {
      dataSet.recoverAppend(
          blocks[TEMPORARY],
          blocks[TEMPORARY].getGenerationStamp() + 1,
          blocks[TEMPORARY].getNumBytes());
      Assert.fail("Should not have appended to a temporary replica " + blocks[TEMPORARY]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertTrue(
          e.getMessage().startsWith(ReplicaNotFoundException.UNFINALIZED_AND_NONRBW_REPLICA));
    }

    newGS = blocks[RBW].getGenerationStamp() + 1;
    dataSet.recoverAppend(blocks[RBW], newGS, blocks[RBW].getNumBytes());
    blocks[RBW].setGenerationStamp(newGS);

    try {
      dataSet.recoverAppend(
          blocks[RWR], blocks[RWR].getGenerationStamp() + 1, blocks[RBW].getNumBytes());
      Assert.fail("Should not have appended to an RWR replica" + blocks[RWR]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertTrue(
          e.getMessage().startsWith(ReplicaNotFoundException.UNFINALIZED_AND_NONRBW_REPLICA));
    }

    try {
      dataSet.recoverAppend(
          blocks[RUR], blocks[RUR].getGenerationStamp() + 1, blocks[RUR].getNumBytes());
      Assert.fail("Should not have appended to an RUR replica" + blocks[RUR]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertTrue(
          e.getMessage().startsWith(ReplicaNotFoundException.UNFINALIZED_AND_NONRBW_REPLICA));
    }

    try {
      dataSet.recoverAppend(
          blocks[NON_EXISTENT],
          blocks[NON_EXISTENT].getGenerationStamp(),
          blocks[NON_EXISTENT].getNumBytes());
      Assert.fail("Should not have appended to a non-existent replica " + blocks[NON_EXISTENT]);
    } catch (ReplicaNotFoundException e) {
      Assert.assertTrue(e.getMessage().startsWith(ReplicaNotFoundException.NON_EXISTENT_REPLICA));
    }
  }