How to use

ExitStatus

in

org.apache.hadoop.hdfs.server.balancer

 @Override
 public int run(String[] args) throws Exception {
  final long startTime = Time.monotonicNow();
  final Configuration conf = getConf();
  try {
   final Map<URI, List<Path>> map = getNameNodePathsToMove(conf, args);
   return Mover.run(map, conf);
  } catch (IOException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.IO_EXCEPTION.getExitCode();
  } catch (InterruptedException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.INTERRUPTED.getExitCode();
  } catch (ParseException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } catch (IllegalArgumentException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } finally {
   System.out.format("%-24s ", DateFormat.getDateTimeInstance().format(new Date()));
   System.out.println("Mover took " + StringUtils.formatTime(Time.monotonicNow()-startTime));
  }
 }
}

/**
 * Parse arguments and then run Balancer.
 * 
 * @param args command specific arguments.
 * @return exit code. 0 indicates success, non-zero indicates failure.
 */
@Override
public int run(String[] args) {
 final long startTime = Time.monotonicNow();
 final Configuration conf = getConf();
 try {
  checkReplicationPolicyCompatibility(conf);
  final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
  return Balancer.run(namenodes, parse(args), conf);
 } catch (IOException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.IO_EXCEPTION.getExitCode();
 } catch (InterruptedException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.INTERRUPTED.getExitCode();
 } finally {
  System.out.format("%-24s ",
    DateFormat.getDateTimeInstance().format(new Date()));
  System.out.println("Balancing took "
    + time2Str(Time.monotonicNow() - startTime));
 }
}

    return r.getExitCode();
 return ExitStatus.SUCCESS.getExitCode();
} finally {
 for (NameNodeConnector nnc : connectors) {

    } else if (r.exitStatus != ExitStatus.SUCCESS) {
     return r.exitStatus.getExitCode();
return ExitStatus.SUCCESS.getExitCode();

 @Override
 public int run(String[] args) throws Exception {
  final long startTime = Time.monotonicNow();
  final Configuration conf = getConf();
  try {
   final Map<URI, List<Path>> map = getNameNodePathsToMove(conf, args);
   return Mover.run(map, conf);
  } catch (IOException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.IO_EXCEPTION.getExitCode();
  } catch (InterruptedException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.INTERRUPTED.getExitCode();
  } catch (ParseException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } catch (IllegalArgumentException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } finally {
   System.out.format("%-24s ", DateFormat.getDateTimeInstance().format(new Date()));
   System.out.println("Mover took " + StringUtils.formatTime(Time.monotonicNow()-startTime));
  }
 }
}

 @Override
 public int run(String[] args) throws Exception {
  final long startTime = Time.monotonicNow();
  final Configuration conf = getConf();
  try {
   final Map<URI, List<Path>> map = getNameNodePathsToMove(conf, args);
   return Mover.run(map, conf);
  } catch (IOException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.IO_EXCEPTION.getExitCode();
  } catch (InterruptedException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.INTERRUPTED.getExitCode();
  } catch (ParseException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } catch (IllegalArgumentException e) {
   System.out.println(e + ".  Exiting ...");
   return ExitStatus.ILLEGAL_ARGUMENTS.getExitCode();
  } finally {
   System.out.format("%-24s ", DateFormat.getDateTimeInstance().format(new Date()));
   System.out.println("Mover took " + StringUtils.formatTime(Time.monotonicNow()-startTime));
  }
 }
}

/**
 * Parse arguments and then run Balancer.
 * 
 * @param args command specific arguments.
 * @return exit code. 0 indicates success, non-zero indicates failure.
 */
@Override
public int run(String[] args) {
 final long startTime = Time.monotonicNow();
 final Configuration conf = getConf();
 try {
  checkReplicationPolicyCompatibility(conf);
  final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
  return Balancer.run(namenodes, parse(args), conf);
 } catch (IOException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.IO_EXCEPTION.getExitCode();
 } catch (InterruptedException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.INTERRUPTED.getExitCode();
 } finally {
  System.out.format("%-24s ",
    DateFormat.getDateTimeInstance().format(new Date()));
  System.out.println("Balancing took "
    + time2Str(Time.monotonicNow() - startTime));
 }
}

   } else if (r != ExitStatus.IN_PROGRESS) {
    return r.getExitCode();
 return ExitStatus.SUCCESS.getExitCode();
} finally {
 for (NameNodeConnector nnc : connectors) {

   } else if (r != ExitStatus.IN_PROGRESS) {
    return r.getExitCode();
 return ExitStatus.SUCCESS.getExitCode();
} finally {
 for (NameNodeConnector nnc : connectors) {

/**
 * Parse arguments and then run Balancer.
 * 
 * @param args command specific arguments.
 * @return exit code. 0 indicates success, non-zero indicates failure.
 */
@Override
public int run(String[] args) {
 final long startTime = Time.monotonicNow();
 final Configuration conf = getConf();
 try {
  checkReplicationPolicyCompatibility(conf);
  final Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
  return Balancer.run(namenodes, parse(args), conf);
 } catch (IOException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.IO_EXCEPTION.getExitCode();
 } catch (InterruptedException e) {
  System.out.println(e + ".  Exiting ...");
  return ExitStatus.INTERRUPTED.getExitCode();
 } finally {
  System.out.format("%-24s ",
    DateFormat.getDateTimeInstance().format(new Date()));
  System.out.println("Balancing took "
    + time2Str(Time.monotonicNow() - startTime));
 }
}

   } else if (r.exitStatus != ExitStatus.SUCCESS) {
    return r.exitStatus.getExitCode();
return ExitStatus.SUCCESS.getExitCode();

   } else if (r.exitStatus != ExitStatus.SUCCESS) {
    return r.exitStatus.getExitCode();
return ExitStatus.SUCCESS.getExitCode();

private void runMover() throws Exception {
 Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
 Map<URI, List<Path>> nnMap = Maps.newHashMap();
 for (URI nn : namenodes) {
  nnMap.put(nn, null);
 }
 int result = Mover.run(nnMap, conf);
 Assert.assertEquals(ExitStatus.SUCCESS.getExitCode(), result);
}

private void runBalancerCanFinish(Configuration conf,
  long totalUsedSpace, long totalCapacity) throws Exception {
 waitForHeartBeat(totalUsedSpace, totalCapacity);
 // start rebalancing
 Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
 final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
 Assert.assertTrue(r == ExitStatus.SUCCESS.getExitCode() ||
   (r == ExitStatus.NO_MOVE_PROGRESS.getExitCode()));
 waitForHeartBeat(totalUsedSpace, totalCapacity);
 LOG.info("Rebalancing with default factor.");
}

private void runBalancer(Configuration conf,
  long totalUsedSpace, long totalCapacity, Balancer.Parameters p,
  int excludedNodes) throws Exception {
 waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
 // start rebalancing
 Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
 final int r = runBalancer(namenodes, p, conf);
 if (conf.getInt(DFSConfigKeys.DFS_DATANODE_BALANCE_MAX_NUM_CONCURRENT_MOVES_KEY, 
   DFSConfigKeys.DFS_DATANODE_BALANCE_MAX_NUM_CONCURRENT_MOVES_DEFAULT) ==0) {
  assertEquals(ExitStatus.NO_MOVE_PROGRESS.getExitCode(), r);
  return;
 } else {
  assertEquals(ExitStatus.SUCCESS.getExitCode(), r);
 }
 waitForHeartBeat(totalUsedSpace, totalCapacity, client, cluster);
 LOG.info("  .");
 waitForBalancer(totalUsedSpace, totalCapacity, client, cluster, p, excludedNodes);
}

   } else if (r.exitStatus != ExitStatus.SUCCESS) {
    return r.exitStatus.getExitCode();
   } else {
    if (iteration > 0) {
return ExitStatus.SUCCESS.getExitCode();

private void runBalancer(Configuration conf,
  long totalUsedSpace, long totalCapacity) throws Exception {
 waitForHeartBeat(totalUsedSpace, totalCapacity);
 // start rebalancing
 Collection<URI> namenodes = DFSUtil.getInternalNsRpcUris(conf);
 final int r = Balancer.run(namenodes, Balancer.Parameters.DEFAULT, conf);
 assertEquals(ExitStatus.SUCCESS.getExitCode(), r);
 waitForHeartBeat(totalUsedSpace, totalCapacity);
 LOG.info("Rebalancing with default factor.");
 waitForBalancer(totalUsedSpace, totalCapacity);
}

  "-p", "/foo/bar", "/foo2");
int result = Mover.run(map, test.conf);
Assert.assertEquals(ExitStatus.SUCCESS.getExitCode(), result);

Assert.assertEquals(ExitStatus.SUCCESS.getExitCode(), r);

 int exitCode = tool.run(args); // start balancing
 assertEquals("Exit status code mismatches",
   ExitStatus.IO_EXCEPTION.getExitCode(), exitCode);
   ExitStatus.SUCCESS.getExitCode(), exitCode);
} finally {
 cluster.shutdown();