Returns a :class:`SparkJobInfo` object, or None if the job info
        could not be found or was garbage collected.

def getJobInfo(self, jobId):
        """
        Returns a :class:`SparkJobInfo` object, or None if the job info
        could not be found or was garbage collected.
        """
        job = self._jtracker.getJobInfo(jobId)
        if job is not None:
            return SparkJobInfo(jobId, job.stageIds(), str(job.status()))