protected final void stopInfoServer() {
    if (this.infoServer != null) {
      LOG.info("Stop info server");
      try {
        this.infoServer.stop();
      } catch (Exception e) {
        LOG.error("Failed to stop infoServer", e);
      }
    }
  }
Sets the abort state if not already set.
@return True if abortRequested set to True successfully, false if an abort is already in
        progress.
hbase-server/src/main/java/org/apache/hadoop/hbase/HBaseServerBase.java