public JobStatus getJobStatus(JobID jobid)
          throws IOException {
    RunningJob rj = getJob(jobid);
    if(rj == null) {
      return null;
    }
    return rj.getJobStatus();
  }
Grab a handle to a job that is already known to the JobTracker.

@return Status of the job, or null if not found.
shims/0.23/src/main/java/org/apache/hadoop/mapred/WebHCatJTShim23.java