Examples of org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery

Package org.apache.hadoop.hdfs.server.datanode

Examples of org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery

org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery
This class represents replicas that are under block recovery It has a recovery id that is equal to the generation stamp that the replica will be bumped to after recovery The recovery id is used to handle multiple concurrent block recoveries. A recovery with higher recovery id preempts recoveries with a lower id.

    case RBW:
      return new ReplicaBeingWritten((ReplicaBeingWritten)r);
    case RWR:
      return new ReplicaWaitingToBeRecovered((ReplicaWaitingToBeRecovered)r);
    case RUR:
      return new ReplicaUnderRecovery((ReplicaUnderRecovery)r);
    case TEMPORARY:
      return new ReplicaInPipeline((ReplicaInPipeline)r);
    }
    return null;
  }

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        case RBW:
        case RWR:
          uc.add(b);
          break;
        case RUR:
          ReplicaUnderRecovery rur = (ReplicaUnderRecovery)b;
          uc.add(rur.getOriginalReplica());
          break;
        case TEMPORARY:
          break;
        default:
          assert false : "Illegal ReplicaInfo state.";

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          + " replica.getGenerationStamp() >= recoveryId = " + recoveryId
          + ", block=" + block + ", replica=" + replica);
    }


    //check RUR
    final ReplicaUnderRecovery rur;
    if (replica.getState() == ReplicaState.RUR) {
      rur = (ReplicaUnderRecovery)replica;
      if (rur.getRecoveryID() >= recoveryId) {
        throw new RecoveryInProgressException(
            "rur.getRecoveryID() >= recoveryId = " + recoveryId
            + ", block=" + block + ", rur=" + rur);
      }
      final long oldRecoveryID = rur.getRecoveryID();
      rur.setRecoveryID(recoveryId);
      LOG.info("initReplicaRecovery: update recovery id for " + block
          + " from " + oldRecoveryID + " to " + recoveryId);
    }
    else {
      rur = new ReplicaUnderRecovery(replica, recoveryId);
      map.add(bpid, rur);
      LOG.info("initReplicaRecovery: changing replica state for "
          + block + " from " + replica.getState()
          + " to " + rur.getState());
    }
    return rur.createInfo();
  }

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      final long recoveryid = gs + 1;
      final ReplicaRecoveryInfo recoveryInfo = FsDatasetImpl.initReplicaRecovery(
          bpid, map, blocks[0], recoveryid);
      assertEquals(originalInfo, recoveryInfo);


      final ReplicaUnderRecovery updatedInfo = (ReplicaUnderRecovery)map.get(bpid, b);
      Assert.assertEquals(originalInfo.getBlockId(), updatedInfo.getBlockId());
      Assert.assertEquals(recoveryid, updatedInfo.getRecoveryID());


      //recover one more time 
      final long recoveryid2 = gs + 2;
      final ReplicaRecoveryInfo recoveryInfo2 = FsDatasetImpl.initReplicaRecovery(bpid, map, blocks[0], recoveryid2);
      assertEquals(originalInfo, recoveryInfo2);


      final ReplicaUnderRecovery updatedInfo2 = (ReplicaUnderRecovery)map.get(bpid, b);
      Assert.assertEquals(originalInfo.getBlockId(), updatedInfo2.getBlockId());
      Assert.assertEquals(recoveryid2, updatedInfo2.getRecoveryID());
      
      //case RecoveryInProgressException
      try {
        FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid);
        Assert.fail();

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      final ReplicaRecoveryInfo recoveryInfo = FsDatasetImpl
          .initReplicaRecovery(bpid, map, blocks[0], recoveryid,
              DFSConfigKeys.DFS_DATANODE_XCEIVER_STOP_TIMEOUT_MILLIS_DEFAULT);
      assertEquals(originalInfo, recoveryInfo);


      final ReplicaUnderRecovery updatedInfo = (ReplicaUnderRecovery)map.get(bpid, b);
      Assert.assertEquals(originalInfo.getBlockId(), updatedInfo.getBlockId());
      Assert.assertEquals(recoveryid, updatedInfo.getRecoveryID());


      //recover one more time 
      final long recoveryid2 = gs + 2;
      final ReplicaRecoveryInfo recoveryInfo2 = FsDatasetImpl
          .initReplicaRecovery(bpid, map, blocks[0], recoveryid2,
              DFSConfigKeys.DFS_DATANODE_XCEIVER_STOP_TIMEOUT_MILLIS_DEFAULT);
      assertEquals(originalInfo, recoveryInfo2);


      final ReplicaUnderRecovery updatedInfo2 = (ReplicaUnderRecovery)map.get(bpid, b);
      Assert.assertEquals(originalInfo.getBlockId(), updatedInfo2.getBlockId());
      Assert.assertEquals(recoveryid2, updatedInfo2.getRecoveryID());
      
      //case RecoveryInProgressException
      try {
        FsDatasetImpl.initReplicaRecovery(bpid, map, b, recoveryid,
            DFSConfigKeys.DFS_DATANODE_XCEIVER_STOP_TIMEOUT_MILLIS_DEFAULT);

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    case RBW:
      return new ReplicaBeingWritten((ReplicaBeingWritten)r);
    case RWR:
      return new ReplicaWaitingToBeRecovered((ReplicaWaitingToBeRecovered)r);
    case RUR:
      return new ReplicaUnderRecovery((ReplicaUnderRecovery)r);
    case TEMPORARY:
      return new ReplicaInPipeline((ReplicaInPipeline)r);
    }
    return null;
  }

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        case RBW:
        case RWR:
          uc.add(b);
          break;
        case RUR:
          ReplicaUnderRecovery rur = (ReplicaUnderRecovery)b;
          uc.add(rur.getOriginalReplica());
          break;
        case TEMPORARY:
          break;
        default:
          assert false : "Illegal ReplicaInfo state.";

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          + " replica.getGenerationStamp() >= recoveryId = " + recoveryId
          + ", block=" + block + ", replica=" + replica);
    }


    //check RUR
    final ReplicaUnderRecovery rur;
    if (replica.getState() == ReplicaState.RUR) {
      rur = (ReplicaUnderRecovery)replica;
      if (rur.getRecoveryID() >= recoveryId) {
        throw new RecoveryInProgressException(
            "rur.getRecoveryID() >= recoveryId = " + recoveryId
            + ", block=" + block + ", rur=" + rur);
      }
      final long oldRecoveryID = rur.getRecoveryID();
      rur.setRecoveryID(recoveryId);
      LOG.info("initReplicaRecovery: update recovery id for " + block
          + " from " + oldRecoveryID + " to " + recoveryId);
    }
    else {
      rur = new ReplicaUnderRecovery(replica, recoveryId);
      map.add(bpid, rur);
      LOG.info("initReplicaRecovery: changing replica state for "
          + block + " from " + replica.getState()
          + " to " + rur.getState());
    }
    return rur.createInfo();
  }

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    case RBW:
      return new ReplicaBeingWritten((ReplicaBeingWritten)r);
    case RWR:
      return new ReplicaWaitingToBeRecovered((ReplicaWaitingToBeRecovered)r);
    case RUR:
      return new ReplicaUnderRecovery((ReplicaUnderRecovery)r);
    case TEMPORARY:
      return new ReplicaInPipeline((ReplicaInPipeline)r);
    }
    return null;
  }

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        case RBW:
        case RWR:
          uc.add(b);
          break;
        case RUR:
          ReplicaUnderRecovery rur = (ReplicaUnderRecovery)b;
          uc.add(rur.getOriginalReplica());
          break;
        case TEMPORARY:
          break;
        default:
          assert false : "Illegal ReplicaInfo state.";

View Full Code Here

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Related Classes of org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery

org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl

org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestInterDatanodeProtocol

org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.TestWriteToReplica

org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo

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