@Override public String toString() {
    return "{" + "id='" + id + '\'' + (startingOffsets != null ? ", startingOffsets=" + startingOffsets : "") + (
        currentOffsets != null ?
            ", currentOffsets=" + currentOffsets :
            "") + ", startTime=" + startTime + ", remainingSeconds=" + remainingSeconds + (lag != null ?
        ", lag=" + lag :
        "") + '}';
  }
Task type used by serializer but does not have any functionality as far i can tell.
druid-handler/src/java/org/apache/hadoop/hive/druid/json/TaskReportData.java