@Override
    public String toString() {
      return ("last_update = " + last_update + " last_version = " + last_version
        + " cur_worker_name = " + cur_worker_name + " status = " + status + " incarnation = "
        + incarnation + " resubmits = " + unforcedResubmits.get() + " batch = " + batch);
    }
in memory state of an active task.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/SplitLogManager.java