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https://issues.apache.org/jira/browse/FLINK-17961?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124925#comment-17124925
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Chesnay Schepler commented on FLINK-17961:
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There's an ongoing discussion about adding an elasticsearch sink on the mailing 
list, with a design document; primarily aimed at the table API though.

Overall I'm somewhat skeptic given how many different ways there are to read 
data from Elasticsearch; with basic queries only returning a limited number of 
values and pagination/scrolling working slightly differently and partially 
relying on the initial query (after_key).
Unless there's a client that abstracts all these differences it seems difficult 
to implement in a way where users don't have to configure a lot themselves.

> Create an Elasticsearch source
> ------------------------------
>
>                 Key: FLINK-17961
>                 URL: https://issues.apache.org/jira/browse/FLINK-17961
>             Project: Flink
>          Issue Type: New Feature
>          Components: Connectors / ElasticSearch
>            Reporter: Etienne Chauchot
>            Priority: Minor
>
> There is only an Elasticsearch sink available. There are opensource github 
> repos such as [this 
> one|[https://github.com/mnubo/flink-elasticsearch-source-connector]]. Also 
> the apache bahir project does not provide an Elasticsearch source connector 
> for flink either. IMHO I think the project would benefit from having an 
> bundled source connector for ES alongside with the available sink connector.



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