@Override
  public Map<String, Object> toMap() {
    Map<String, Object> map = new HashMap<>();
    map.put("description", getDescription());
    map.put("status", getStatus());
    map.put("state", getState());
    map.put("starttimems", getStartTime());
    map.put("statustimems", getCompletionTimestamp());
    map.put("statetimems", getCompletionTimestamp());
    return map;
  }
Force the completion timestamp backwards so that it expires now.
hbase-server/src/main/java/org/apache/hadoop/hbase/monitoring/MonitoredTaskImpl.java