Examples of org.apache.hadoop.hdfs.protocol.BlockListAsLongs

org.apache.hadoop.hdfs.protocol.BlockListAsLongs
This class provides an interface for accessing list of blocks that has been implemented as long[]. This class is usefull for block report. Rather than send block reports as a Block[] we can send it as a long[].

      blockStateChangeLog.debug("*BLOCK* NameNode.blockReport: "
           + "from " + nodeReg + ", reports.length=" + reports.length);
    }
    final BlockManager bm = namesystem.getBlockManager(); 
    for(StorageBlockReport r : reports) {
      final BlockListAsLongs blocks = new BlockListAsLongs(r.getBlocks());
      bm.processReport(nodeReg, r.getStorage(), poolId, blocks);
    }


    if (nn.getFSImage().isUpgradeFinalized() && !nn.isStandbyState())
      return new FinalizeCommand(poolId);

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        if (b.isFinalized()) {
          blocks.add(b.theBlock);
        }
      }
    }
    return new BlockListAsLongs(blocks, null);
  }

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    boolean corruptedLen = false;


    int reportIndex = 0;
    for(Map.Entry<DatanodeStorage, BlockListAsLongs> kvPair : perVolumeBlockLists.entrySet()) {
      DatanodeStorage dnStorage = kvPair.getKey();
      BlockListAsLongs blockList = kvPair.getValue();


      // Walk the list of blocks until we find one each to corrupt the
      // generation stamp and length, if so requested.
      for (int i = 0; i < blockList.getNumberOfBlocks(); ++i) {
        if (corruptOneBlockGs && !corruptedGs) {
          blockList.corruptBlockGSForTesting(i, rand);
          LOG.info("Corrupted the GS for block ID " + i);
          corruptedGs = true;
        } else if (corruptOneBlockLen && !corruptedLen) {
          blockList.corruptBlockLengthForTesting(i, rand);
          LOG.info("Corrupted the length for block ID " + i);
          corruptedLen = true;
        } else {
          break;
        }
      }


      reports[reportIndex++] =
          new StorageBlockReport(dnStorage, blockList.getBlockListAsLongs());
    }


    return reports;
  }

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        new StorageBlockReport[perVolumeBlockLists.size()];


    int reportIndex = 0;
    for(Map.Entry<DatanodeStorage, BlockListAsLongs> kvPair : perVolumeBlockLists.entrySet()) {
        DatanodeStorage dnStorage = kvPair.getKey();
        BlockListAsLongs blockList = kvPair.getValue();
        reports[reportIndex++] =
            new StorageBlockReport(dnStorage, blockList.getBlockListAsLongs());
    }
    
    cluster.getNameNodeRpc().blockReport(dnR, bpid, reports);


    // verify number of blocks and files...

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      dnRegistration = nameNodeProto.registerDatanode(dnRegistration);
      //first block reports
      storage = new DatanodeStorage(DatanodeStorage.generateUuid());
      final StorageBlockReport[] reports = {
          new StorageBlockReport(storage,
              new BlockListAsLongs(null, null).getBlockListAsLongs())
      };
      nameNodeProto.blockReport(dnRegistration, 
          nameNode.getNamesystem().getBlockPoolId(), reports);
    }

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    void formBlockReport() {
      // fill remaining slots with blocks that do not exist
      for(int idx = blocks.size()-1; idx >= nrBlocks; idx--)
        blocks.set(idx, new Block(blocks.size() - idx, 0, 0));
      blockReportList = new BlockListAsLongs(blocks,null).getBlockListAsLongs();
    }

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    assert added : "Delimiting block cannot be present in the node";
    int headIndex = 0; //currently the delimiter is in the head of the list
    int curIndex;


    if (newReport == null)
      newReport = new BlockListAsLongs();
    // scan the report and process newly reported blocks
    BlockReportIterator itBR = newReport.getBlockReportIterator();
    while(itBR.hasNext()) {
      Block iblk = itBR.next();
      ReplicaState iState = itBR.getCurrentReplicaState();

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    // that have been reported from those that have not
    BlockInfo delimiter = new BlockInfo(new Block(), 1);
    boolean added = dn.addBlock(delimiter);
    assert added : "Delimiting block cannot be present in the node";
    if(newReport == null)
      newReport = new BlockListAsLongs();
    // scan the report and process newly reported blocks
    BlockReportIterator itBR = newReport.getBlockReportIterator();
    while(itBR.hasNext()) {
      Block iblk = itBR.next();
      ReplicaState iState = itBR.getCurrentReplicaState();

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  public BlockListAsLongs getBlockReport(String bpid) {
    int size =  volumeMap.size(bpid);
    ArrayList<ReplicaInfo> finalized = new ArrayList<ReplicaInfo>(size);
    ArrayList<ReplicaInfo> uc = new ArrayList<ReplicaInfo>();
    if (size == 0) {
      return new BlockListAsLongs(finalized, uc);
    }
    
    synchronized(this) {
      for (ReplicaInfo b : volumeMap.replicas(bpid)) {
        switch(b.getState()) {
        case FINALIZED:
          finalized.add(b);
          break;
        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.";
        }
      }
      return new BlockListAsLongs(finalized, uc);
    }
  }

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  @Override // DatanodeProtocol
  public DatanodeCommand blockReport(DatanodeRegistration nodeReg,
      String poolId, long[] blocks) throws IOException {
    verifyRequest(nodeReg);
    BlockListAsLongs blist = new BlockListAsLongs(blocks);
    if(stateChangeLog.isDebugEnabled()) {
      stateChangeLog.debug("*BLOCK* NameNode.blockReport: "
           + "from " + nodeReg.getName() + " " + blist.getNumberOfBlocks()
           + " blocks");
    }


    namesystem.getBlockManager().processReport(nodeReg, poolId, blist);
    if (nn.getFSImage().isUpgradeFinalized())

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