Examples of org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException

Package org.apache.hadoop.hdfs.server.protocol

Examples of org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException

org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException
This exception is thrown when a datanode tries to register or communicate with the namenode when it does not appear on the list of included nodes, or has been specifically excluded.

    }


    // Check if this datanode should actually be shutdown instead.
    if (shouldNodeShutdown(node)) {
      setDatanodeDead(node);
      throw new DisallowedDatanodeException(node);
    }
    
    // To minimize startup time, we discard any second (or later) block reports
    // that we receive while still in startup phase.
    if (isInStartupSafeMode() && !node.firstBlockReport()) {

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    }


    // Check if this datanode should actually be shutdown instead.
    if (shouldNodeShutdown(node)) {
      setDatanodeDead(node);
      throw new DisallowedDatanodeException(node);
    }


    // get the deletion hint node
    DatanodeDescriptor delHintNode = null;
    if(delHint!=null && delHint.length()!=0) {

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      dnAddress = nodeReg.getHost();
    }      


    // check if the datanode is allowed to be connect to the namenode
    if (!verifyNodeRegistration(nodeReg, dnAddress)) {
      throw new DisallowedDatanodeException(nodeReg);
    }


    String hostName = nodeReg.getHost();
      
    // update the datanode's name with ip:port

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        }
          
        // Check if this datanode should actually be shutdown instead. 
        if (nodeinfo != null && shouldNodeShutdown(nodeinfo)) {
          setDatanodeDead(nodeinfo);
          throw new DisallowedDatanodeException(nodeinfo);
        }


        if (nodeinfo == null || !nodeinfo.isAlive) {
          return new DatanodeCommand[]{DatanodeCommand.REGISTER};
        }

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    }


    // Check if this datanode should actually be shutdown instead.
    if (shouldNodeShutdown(node)) {
      setDatanodeDead(node);
      throw new DisallowedDatanodeException(node);
    }
    
    //
    // Modify the (block-->datanode) map, according to the difference
    // between the old and new block report.

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    }


    // Check if this datanode should actually be shutdown instead.
    if (shouldNodeShutdown(node)) {
      setDatanodeDead(node);
      throw new DisallowedDatanodeException(node);
    }


    // decrement number of blocks scheduled to this datanode.
    node.decBlocksScheduled();

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    }      


    // Checks if the node is not on the hosts list.  If it is not, then
    // it will be disallowed from registering. 
    if (!inHostsList(nodeReg, dnAddress)) {
      throw new DisallowedDatanodeException(nodeReg);
    }


    String hostName = nodeReg.getHost();
      
    // update the datanode's name with ip:port

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        }
        
        // Check if this datanode should actually be shutdown instead. 
        if (nodeinfo != null && nodeinfo.isDisallowed()) {
          setDatanodeDead(nodeinfo);
          throw new DisallowedDatanodeException(nodeinfo);
        }
         
        if (nodeinfo == null || !nodeinfo.isAlive) {
          return new DatanodeCommand[]{DatanodeCommand.REGISTER};
        }

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      String ip = dnAddress.getHostAddress();
      if (!isNameResolved(dnAddress)) {
        // Reject registration of unresolved datanode to prevent performance
        // impact of repetitive DNS lookups later.
        LOG.warn("Unresolved datanode registration from " + ip);
        throw new DisallowedDatanodeException(nodeReg);
      }
      // update node registration with the ip and hostname from rpc request
      nodeReg.setIpAddr(ip);
      nodeReg.setPeerHostName(hostname);
    }
    
    try {
      nodeReg.setExportedKeys(blockManager.getBlockKeys());
  
      // Checks if the node is not on the hosts list.  If it is not, then
      // it will be disallowed from registering. 
      if (!hostFileManager.isIncluded(nodeReg)) {
        throw new DisallowedDatanodeException(nodeReg);
      }
        
      NameNode.stateChangeLog.info("BLOCK* registerDatanode: from "
          + nodeReg + " storage " + nodeReg.getStorageID());

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        }
        
        // Check if this datanode should actually be shutdown instead. 
        if (nodeinfo != null && nodeinfo.isDisallowed()) {
          setDatanodeDead(nodeinfo);
          throw new DisallowedDatanodeException(nodeinfo);
        }


        if (nodeinfo == null || !nodeinfo.isAlive) {
          return new DatanodeCommand[]{RegisterCommand.REGISTER};
        }

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Related Classes of org.apache.hadoop.hdfs.server.protocol.DisallowedDatanodeException

org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager

org.apache.hadoop.hdfs.server.namenode.FSNamesystem

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