Examples of org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown()

Package org.apache.hadoop.hdfs.server.datanode

Class org.apache.hadoop.hdfs.server.datanode.DataNode

Examples of org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown()

org.apache.hadoop.hdfs.server.datanode.DataNode.shutdown()
Shut down this instance of the datanode. Returns only after shutdown is complete. This method can only be called by the offerService thread. Otherwise, deadlock might occur.

    DataNode dn = dnprop.datanode;
    LOG.info("MiniDFSCluster Stopping DataNode " +
                       dn.getMachineName() +
                       " from a total of " + (dataNodes.size() + 1) + 
                       " datanodes.");
    dn.shutdown();
    numDataNodes--;
    return dnprop;
  }


  /*

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      dn = DataNode.createDataNode(new String[]{}, conf);
    } catch(IOException e) {
      // expecting exception here
    }
    if(dn != null)
      dn.shutdown();
    assertNull("Data-node startup should have failed.", dn);


    // 2. Test "file:" schema and no schema (path-only). Both should work.
    String dnDir1 = fileAsURI(dataDir).toString() + "1";
    String dnDir2 = makeURI("file", "localhost",

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   */
  public void shutdownDataNodes() {
    for (int i = dataNodes.size()-1; i >= 0; i--) {
      System.out.println("Shutting down DataNode " + i);
      DataNode dn = dataNodes.remove(i).datanode;
      dn.shutdown();
      numDataNodes--;
    }
  }


  /**

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    DataNode dn = dnprop.datanode;
    System.out.println("MiniDFSCluster Stopping DataNode " + 
                       dn.dnRegistration.getName() +
                       " from a total of " + (dataNodes.size() + 1) + 
                       " datanodes.");
    dn.shutdown();
    numDataNodes--;
    return dnprop;
  }


  /*

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    } catch(IOException e) {
      if (e instanceof java.net.BindException)
        return false;
      throw e;
    } finally {
      if(dn != null) dn.shutdown();
    }
    return true;
  }


  /**

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    DatanodeRegistration reg = cluster.getDataNodes().get(0)
        .getDatanodeRegistration();
    waitForDatanodeState(reg.getStorageID(), true, 20000);


    // Shutdown and wait for datanode to be marked dead
    dn.shutdown();
    waitForDatanodeState(reg.getStorageID(), false, 20000);


    DatanodeProtocol dnp = cluster.getNameNode();
    Block block = new Block(0);
    Block[] blocks = new Block[] { block };

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   */
  public void shutdownDataNodes() {
    for (int i = dataNodes.size()-1; i >= 0; i--) {
      LOG.info("Shutting down DataNode " + i);
      DataNode dn = dataNodes.remove(i).datanode;
      dn.shutdown();
      numDataNodes--;
    }
  }


  /**

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    DataNode dn = dnprop.datanode;
    System.out.println("MiniDFSCluster Stopping DataNode " + 
                       dn.dnRegistration.getName() +
                       " from a total of " + (dataNodes.size() + 1) + 
                       " datanodes.");
    dn.shutdown();
    numDataNodes--;
    return dnprop;
  }


  /*

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      dn = DataNode.createDataNode(new String[]{}, conf);
    } catch(IOException e) {
      // expecting exception here
    }
    if(dn != null)
      dn.shutdown();
    assertNull("Data-node startup should have failed.", dn);


    // 2. Test "file:" schema and no schema (path-only). Both should work.
    String dnDir1 = fileAsURI(dataDir).toString() + "1";
    String dnDir2 = makeURI("file", "localhost",

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  public void shutdownDataNode(int index, boolean remove) {
    System.out.println("Shutting down DataNode " + index);
    DataNode dn = remove ? dataNodes.remove(index).datanode : dataNodes
        .get(index).datanode;
    dn.shutdown();
    numDataNodes--;
  }


  public synchronized void shutdownNameNode() {
    checkSingleNameNode();

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