[jira] [Created] (FLINK-4885) Improve the Elasticsearch configuration flexibility

[Shang Yuanchun (Jira)]

Mike Dias created FLINK-4885:
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             Summary: Improve the Elasticsearch configuration flexibility
                 Key: FLINK-4885
                 URL: https://issues.apache.org/jira/browse/FLINK-4885
             Project: Flink
          Issue Type: Improvement
          Components: Streaming Connectors
            Reporter: Mike Dias
            Priority: Minor


Right now, it's only possible to use Elasticsearch 2.x through {{TransportClient}} due a missing constructor. We can improve the Elasticsearch configuration flexibility with the following actions:
 - Add the missing constructor that was present in Elasticsearch 1.x.
 - Add another constructor that receives an already configured instance of {{Client}} by the user.



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