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

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

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      namesystem.writeLock();
      namesystem.clusterMap.remove(dnDs);
      namesystem.resolveNetworkLocation(newDS);
      namesystem.unprotectedAddDatanode(newDS);
      namesystem.clusterMap.add(newDS);
      namesystem.writeUnlock();
      // Overwrite DN map with new registration.
      node.setRegistrationName(node.getMachineName());
    }
  }
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      namesystem.writeLock();
      namesystem.clusterMap.remove(dnDs);
      namesystem.resolveNetworkLocation(newDS);
      namesystem.unprotectedAddDatanode(newDS);
      namesystem.clusterMap.add(newDS);
      namesystem.writeUnlock();
      // Overwrite DN map with new registration.
      node.setRegistrationName(node.getMachineName());
    }
  }
 
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    try {
      // for now, we support only the latest checkpoint
      lastCheckpointTxId = fsimage.storage.getMostRecentCheckpointTxId();
      images = fsimage.storage.getImages(lastCheckpointTxId);
    } finally {
      fsn.writeUnlock();
    }
   
    // for each image, construct its properties
    List<Map<String, String>> imageList = new ArrayList<Map<String, String>>();
    for(File f : images.keySet()) {
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