@Override
    public void run() {
      try {
        doRun();
      } catch (Throwable t) {
        LOG.error("Exiting thread", t);
        controller.writerThreadError(t);
      }
    }
Set status message in {@link MonitoredTask} instance that is set in this OutputSink
@param msg message to update the status with
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/OutputSink.java