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.

          + " 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 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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    replicaInfo.getMetaFile().createNewFile();
    
    replicasMap.add(bpid, new ReplicaWaitingToBeRecovered(
        blocks[RWR].getLocalBlock(), vol, vol.createRbwFile(bpid,
            blocks[RWR].getLocalBlock()).getParentFile()));
    replicasMap.add(bpid, new ReplicaUnderRecovery(new FinalizedReplica(blocks[RUR]
        .getLocalBlock(), vol, vol.getCurrentDir().getParentFile()), 2007));    
    
    return blocks;
  }

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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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