Package org.apache.hadoop.hdfs.server.namenode

Examples of org.apache.hadoop.hdfs.server.namenode.FSNamesystem.writeLock()

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          dnDs.getDfsUsed(), dnDs.getRemaining(), dnDs.getNamespaceUsed(),
          dnDs.getXceiverCount());
     
      newDS.isAlive = true;
      // Overwrite NN maps with new descriptor.
      namesystem.writeLock();
      namesystem.clusterMap.remove(dnDs);
      namesystem.resolveNetworkLocation(newDS);
      namesystem.unprotectedAddDatanode(newDS);
      namesystem.clusterMap.add(newDS);
      namesystem.writeUnlock();
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          dnDs.getDfsUsed(), dnDs.getRemaining(), dnDs.getNamespaceUsed(),
          dnDs.getXceiverCount());
     
      newDS.isAlive = true;
      // Overwrite NN maps with new descriptor.
      namesystem.writeLock();
      namesystem.clusterMap.remove(dnDs);
      namesystem.resolveNetworkLocation(newDS);
      namesystem.unprotectedAddDatanode(newDS);
      namesystem.clusterMap.add(newDS);
      namesystem.writeUnlock();
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    // txid -> list of images -> each image described by a property map
    final Map<Long, List<Map<String, String>>> outputMap
      = new HashMap<Long, List<Map<String, String>>>();
    Map<File, StorageLocationType> images = null;

    fsn.writeLock();
    try {
      // for now, we support only the latest checkpoint
      lastCheckpointTxId = fsimage.storage.getMostRecentCheckpointTxId();
      images = fsimage.storage.getImages(lastCheckpointTxId);
    } finally {
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