we found sending event thread of opentsdb emitter will cause cpu occupy 100%, as follow. And format this extension's code to pass code style check. [#6247](https://github.com/apache/incubator-druid/issues/6247)  
[ Full content available at: https://github.com/apache/incubator-druid/pull/6254 ] This message was relayed via gitbox.apache.org for [email protected]
