Github user zjureel commented on the issue:
https://github.com/apache/flink/pull/4675
@rmetzger @tzulitai I create this PR and try to fix
[https://issues.apache.org/jira/browse/FLINK-7386(https://issues.apache.org/jira/browse/FLINK-7386).
In the PR I do some things as follows:
1. Add `createRequestIndex` method in `ElasticsearchApiCallBridge`, then we
can use this method to create different `RequestIndexer` instance.
2. Add flink-connector-elasticsearch5.3 project and create
`BulkProcessorIndexer`. `ActionRequest` will be converted to `DocWriteRequest`
in the `BulkProcessorIndexer` in the project.
What do you think? Please have a look when you're free, thanks
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