Examples of org.apache.hadoop.util.Daemon

org.apache.hadoop.util.Daemon
A thread that has called {@link Thread#setDaemon(boolean) } with true.

   */
  public void processMisReplicatedBlocks() {
    assert namesystem.hasWriteLock();
    stopReplicationInitializer();
    neededReplications.clear();
    replicationQueuesInitializer = new Daemon() {


      @Override
      public void run() {
        try {
          processMisReplicatesAsync();

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    // start daemon only if not already started
    if (isDaemonStarted() == true) {
      return;
    }
    
    daemon = new Daemon(new Runnable() {
      @Override
      public void run() {
        try {
          PeerCache.this.run();
        } catch(InterruptedException e) {

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      if (nonSequentialWriteInMemory.get() >= DUMP_WRITE_WATER_MARK) {
        if (LOG.isDebugEnabled()) {
          LOG.debug("Asking dumper to dump...");
        }
        if (dumpThread == null) {
          dumpThread = new Daemon(new Dumper());
          dumpThread.start();
        } else {
          this.notifyAll();          
        }
      }

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        return;
      }
      // start monitor
      reached = now();
      if (smmthread == null) {
        smmthread = new Daemon(new SafeModeMonitor());
        smmthread.start();
        reportStatus("STATE* Safe mode extension entered.", true);
      }


      // check if we are ready to initialize replication queues

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    writeLock();
    try {
      setBlockTotal();
      blockManager.activate(conf);


      this.lmthread = new Daemon(leaseManager.new Monitor());
      lmthread.start();
      this.nnrmthread = new Daemon(new NameNodeResourceMonitor());
      nnrmthread.start();
    } finally {
      writeUnlock();
    }

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        reportStatus("STATE* Safe mode ON.", false);
        return;
      }
      // start monitor
      reached = now();
      smmthread = new Daemon(new SafeModeMonitor());
      smmthread.start();
      reportStatus("STATE* Safe mode extension entered.", true);


      // check if we are ready to initialize replication queues
      if (canInitializeReplQueues() && !isPopulatingReplQueues()) {

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  private Daemon decommissionthread = null;


  void activate(final Configuration conf) {
    final DecommissionManager dm = new DecommissionManager(namesystem, blockManager);
    this.decommissionthread = new Daemon(dm.new Monitor(
        conf.getInt(DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_INTERVAL_KEY, 
                    DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_INTERVAL_DEFAULT),
        conf.getInt(DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_KEY, 
                    DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_DEFAULT)));
    decommissionthread.start();

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                                        -1) * 1000L);
    if (isAccessTokenEnabled) {
      accessTokenHandler = new BlockTokenSecretManager(true,
          accessKeyUpdateInterval, accessTokenLifetime);
    }
    this.hbthread = new Daemon(new HeartbeatMonitor());
    this.lmthread = new Daemon(leaseManager.new Monitor());
    this.replmon = new ReplicationMonitor();
    this.replthread = new Daemon(replmon);
    hbthread.start();
    lmthread.start();
    replthread.start();


    this.hostsReader = new HostsFileReader(conf.get("dfs.hosts",""),
                                           conf.get("dfs.hosts.exclude",""));
    this.dnthread = new Daemon(new DecommissionManager(this).new Monitor(
        conf.getInt("dfs.namenode.decommission.interval", 30),
        conf.getInt("dfs.namenode.decommission.nodes.per.interval", 5)));
    dnthread.start();


    this.dnsToSwitchMapping = ReflectionUtils.newInstance(

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        reportStatus("STATE* Safe mode ON.", false);
        return;
      }
      // start monitor
      reached = now();
      smmthread = new Daemon(new SafeModeMonitor());
      smmthread.start();
      reportStatus("STATE* Safe mode extension entered.", true);
    }

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      LOG.debug("Running " + GenericTestUtils.getMethodName());
    }
    DataNode spyDN = spy(dn);
    doThrow(new RecoveryInProgressException("Replica recovery is in progress")).
       when(spyDN).initReplicaRecovery(any(RecoveringBlock.class));
    Daemon d = spyDN.recoverBlocks("fake NN", initRecoveringBlocks());
    d.join();
    verify(spyDN, never()).syncBlock(
        any(RecoveringBlock.class), anyListOf(BlockRecord.class));
  }

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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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