Examples of org.apache.hadoop.util.ProcfsBasedProcessTree$SigKillThread

org.apache.hadoop.util.ProcfsBasedProcessTree
Helper thread class that kills process-tree with SIGKILL in background

      }


      TaskAttemptID tid = task.getTask().getTaskID();
      if (processTreeInfoMap.containsKey(tid)) {
        ProcessTreeInfo ptInfo = processTreeInfoMap.get(tid);
        ProcfsBasedProcessTree pTree = ptInfo.getProcessTree();
        memoryStillInUsage -= pTree.getCumulativeVmem();
        tasksToKill.add(tid);
      }
      // Exclude this task from next search because it is already
      // considered.
      tasksToExclude.add(tid);

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   * @param tid the task attempt ID of the task
   * @return rss memory usage in bytes. 0 if the process tree is not available
   */
  private long getTaskCumulativeRssmem(TaskAttemptID tid) {
      ProcessTreeInfo ptInfo = processTreeInfoMap.get(tid);
      ProcfsBasedProcessTree pTree = ptInfo.getProcessTree();
      return pTree == null ? 0 : pTree.getCumulativeVmem();
  }

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  private void killTask(TaskAttemptID tid, String msg, boolean wasFailure) {
    // Kill the task and mark it as killed.
    taskTracker.cleanUpOverMemoryTask(tid, wasFailure, msg);
    // Now destroy the ProcessTree, remove it from monitoring map.
    ProcessTreeInfo ptInfo = processTreeInfoMap.get(tid);
    ProcfsBasedProcessTree pTree = ptInfo.getProcessTree();
    try {
      LinuxSystemCall.killProcessGroup(Integer.parseInt(ptInfo.getPID()));
    } catch (java.io.IOException e) {
      LOG.error("Could not kill process group " + ptInfo.getPID(), e);
    }

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