Throw exception with job.getStatus().getFailureInfo() when ExportSnapshot fails

    // Run the MR Job
    if (!job.waitForCompletion(true)) {
      // TODO: Replace the fixed string with job.getStatus().getFailureInfo()
      // when it will be available on all the supported versions.
      throw new ExportSnapshotException("Copy Files Map-Reduce Job failed");
    }