Examples of org.apache.hadoop.hbase.Chore

org.apache.hadoop.hbase.Chore
Chore is a task performed on a period in hbase. The chore is run in its own thread. This base abstract class provides while loop and sleeping facility. If an unhandled exception, the threads exit is logged. Implementers just need to add checking if there is work to be done and if so, do it. Its the base of most of the chore threads in hbase.
Don't subclass Chore if the task relies on being woken up for something to do, such as an entry being added to a queue, etc.

  private static Thread getAndStartBalancerChore(final HMaster master) {
    String name = master.getServerName() + "-BalancerChore";
    int balancerPeriod =
      master.getConfiguration().getInt("hbase.balancer.period", 300000);
    // Start up the load balancer chore
    Chore chore = new Chore(name, balancerPeriod, master) {
      @Override
      protected void chore() {
        master.balance();
      }
    };
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartBalancerChore(final HMaster master) {
    String name = master.getServerName() + "-BalancerChore";
    int balancerPeriod =
      master.getConfiguration().getInt("hbase.balancer.period", 300000);
    // Start up the load balancer chore
    Chore chore = new Chore(name, balancerPeriod, master) {
      @Override
      protected void chore() {
        master.balance();
      }
    };
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartClusterStatusChore(HMaster master) {
    if (master == null || master.balancer == null) {
      return null;
    }
    Chore chore = new ClusterStatusChore(master, master.balancer);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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    return Threads.setDaemonThreadRunning(chore.getThread());
  }


  private static Thread getAndStartBalancerChore(final HMaster master) {
    // Start up the load balancer chore
    Chore chore = new BalancerChore(master);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartBalancerChore(final HMaster master) {
    String name = master.getServerName() + "-BalancerChore";
    int balancerPeriod =
      master.getConfiguration().getInt("hbase.balancer.period", 300000);
    // Start up the load balancer chore
    Chore chore = new Chore(name, balancerPeriod, master) {
      @Override
      protected void chore() {
        master.balance();
      }
    };
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartClusterStatusChore(FMaster master) {
    if (master == null || master.balancer == null) {
      return null;
    }
    Chore chore = new ClusterStatusChore(master, master.balancer);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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    return Threads.setDaemonThreadRunning(chore.getThread());
  }


  private static Thread getAndStartBalancerChore(final FMaster master) {
    // Start up the load balancer chore
    Chore chore = new BalancerChore(master);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartClusterStatusChore(HMaster master) {
    if (master == null || master.balancer == null) {
      return null;
    }
    Chore chore = new ClusterStatusChore(master, master.balancer);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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    return Threads.setDaemonThreadRunning(chore.getThread());
  }


  private static Thread getAndStartBalancerChore(final HMaster master) {
    // Start up the load balancer chore
    Chore chore = new BalancerChore(master);
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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  private static Thread getAndStartBalancerChore(final HMaster master) {
    String name = master.getServerName() + "-BalancerChore";
    int balancerPeriod =
      master.getConfiguration().getInt("hbase.balancer.period", 300000);
    // Start up the load balancer chore
    Chore chore = new Chore(name, balancerPeriod, master) {
      @Override
      protected void chore() {
        master.balance();
      }
    };
    return Threads.setDaemonThreadRunning(chore.getThread());
  }

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