Github user 397090770 commented on the issue: https://github.com/apache/flink/pull/3869 @tzulitai Thank you for your review very much. The current structuring of the ES output format as follow: ![elasticsearch_flink](https://cloud.githubusercontent.com/assets/5170878/26194858/69c36264-3bec-11e7-9f52-db329414dae4.png) as you can see, both `ElasticsearchSinkBase` for batch and `ElasticsearchSinkBase` for stream need `ActionRequestFailureHandler`, `RequestIndexer` ect, so I move those class to a different package, and do you have any suggestions? Thank you.
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