Package org.apache.hadoop.util

Examples of org.apache.hadoop.util.Daemon

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      int ret = secondary.processArgs(argv);
      System.exit(ret);
    }

    // Create a never ending deamon
    Daemon checkpointThread = new Daemon(new SecondaryNameNode(tconf));
    checkpointThread.start();
  }
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  /** should be called before this object is used */
  public synchronized void startThreads() throws IOException {
    updateCurrentKey();
    running = true;
    tokenRemoverThread = new Daemon(new ExpiredTokenRemover());
    tokenRemoverThread.start();
  }
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       * updates its block keys
       */
      this.keyUpdaterInterval = blockKeyUpdateInterval / 4;
      LOG.info("Balancer will update its block keys every "
          + keyUpdaterInterval / (60 * 1000) + " minute(s)");
      this.keyupdaterthread = new Daemon(new BlockKeyUpdater());
      this.shouldRun = true;
      this.keyupdaterthread.start();
    }
  }
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      // write data chunk header
      if (!finalized) {
        BlockMetadataHeader.writeHeader(checksumOut, checksum);
      }
      if (clientName.length() > 0) {
        responder = new Daemon(datanode.threadGroup,
                               new PacketResponder(this, block, mirrIn,
                                                   replyOut, numTargets,
                                                   Thread.currentThread()));
        responder.start(); // start thread to processes reponses
      }
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                                     tmpPort);
    this.dnRegistration.setName(machineName + ":" + tmpPort);
    LOG.info("Opened info server at " + tmpPort);
     
    this.threadGroup = new ThreadGroup("dataXceiverServer");
    this.dataXceiverServer = new Daemon(threadGroup,
        new DataXceiverServer(ss, conf, this));
    this.threadGroup.setDaemon(true); // auto destroy when empty

    this.blockReportInterval =
      conf.getLong("dfs.blockreport.intervalMsec", BLOCKREPORT_INTERVAL);
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        // start block scanner
        if (blockScanner != null && blockScannerThread == null &&
            upgradeManager.isUpgradeCompleted()) {
          LOG.info("Starting Periodic block scanner.");
          blockScannerThread = new Daemon(blockScanner);
          blockScannerThread.start();
        }
           
        //
        // There is no work to do;  sleep until hearbeat timer elapses,
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        }
        LOG.info(dnRegistration + " Starting thread to transfer block " +
                 block + " to " + xfersBuilder);                      
      }

      new Daemon(new DataTransfer(xferTargets, block, this)).start();
    }
  }
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  public BlockRecoveryInfo startBlockRecovery(Block block) throws IOException {
    return data.startBlockRecovery(block.getBlockId());
  }

  public Daemon recoverBlocks(final Block[] blocks, final DatanodeInfo[][] targets) {
    Daemon d = new Daemon(threadGroup, new Runnable() {
      /** Recover a list of blocks. It is run by the primary datanode. */
      public void run() {
        for(int i = 0; i < blocks.length; i++) {
          try {
            logRecoverBlock("NameNode", blocks[i], targets[i]);
            recoverBlock(blocks[i], false, targets[i], true);
          } catch (IOException e) {
            LOG.warn("recoverBlocks FAILED, blocks[" + i + "]=" + blocks[i], e);
          }
        }
      }
    });
    d.start();
    return d;
  }
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      int ret = secondary.processArgs(argv);
      System.exit(ret);
    }

    // Create a never ending deamon
    Daemon checkpointThread = new Daemon(new SecondaryNameNode(tconf));
    checkpointThread.start();
  }
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  /** should be called before this object is used */
  public void startThreads() throws IOException {
    updateCurrentKey();
    synchronized (this) {
      running = true;
      tokenRemoverThread = new Daemon(new ExpiredTokenRemover());
      tokenRemoverThread.start();
    }
  }
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Related Classes of org.apache.hadoop.util.Daemon

  • io.fabric8.hadoop.hdfs.SecondaryNameNodeFactory
  • io.fabric8.hadoop.mapred.TaskTrackerFactory
  • org.apache.hadoop.corona.SessionDriver
  • org.apache.hadoop.dfs.BlockCrcUpgradeObjectNamenode
  • org.apache.hadoop.dfs.DataStorage
  • org.apache.hadoop.dfs.SecondaryNameNode
  • org.apache.hadoop.dfs.UpgradeManagerDatanode
  • org.apache.hadoop.hdfs.DFSClient$BlockLocationRenewal
  • org.apache.hadoop.hdfs.DFSClient$LeaseChecker
  • org.apache.hadoop.hdfs.LeaseRenewer
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