hbase源码分析-regionserver的abort

public void (String reason, Throwable cause) {
  String msg = "ABORTING region server " + this + ": " + reason;
  if (cause != null) {
    LOG.fatal(msg, cause);
  } else {
    LOG.fatal(msg);
  }
  this.abortRequested = true;
  
  // regionserver crashes.Note that we're implicitly using
  // java.util.HashSet's toString() method to print the coprocessor names.
  LOG.fatal("RegionServer abort: loaded coprocessors are: " +
      CoprocessorHost.getLoadedCoprocessors());
  // Try and dump metrics if abort -- might give clue as to how fatal came about....
  try {
    LOG.info("Dump of metrics as JSON on abort: " + JSONBean.dumpRegionServerMetrics());
  } catch (MalformedObjectNameException | IOException e) {
    LOG.warn("Failed dumping metrics", e);
  }
  // Do our best to report our abort to the master, but this may not work
  try {
    if (cause != null) {
      msg += "nCause:n" + StringUtils.stringifyException(cause);
    }
    // Report to the master but only if we have already registered with the master.
    if (rssStub != null && this.serverName != null) {
      ReportRSFatalErrorRequest.Builder builder =
        ReportRSFatalErrorRequest.newBuilder();
      ServerName sn =
        ServerName.parseVersionedServerName(this.serverName.getVersionedBytes());
      builder.setServer(ProtobufUtil.toServerName(sn));
      builder.setErrorMessage(msg);
      rssStub.reportRSFatalError(null, builder.build());
    }
  } catch (Throwable t) {
    LOG.warn("Unable to report fatal error to master", t);
  }
  stop(reason);
}