[jira] [Updated] (FLINK-11747) Elasticsearch 6 connector - Expose RestHighLevelClient to allow for custom sniffing

["Samir Desai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-11747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Samir Desai updated FLINK-11747:
--------------------------------
    Summary: Elasticsearch 6 connector - Expose RestHighLevelClient to allow for custom sniffing  (was: Elasticsearch6 - Expose RestHighLevelClient to allow for custom sniffing)

> Elasticsearch 6 connector - Expose RestHighLevelClient to allow for custom sniffing
> -----------------------------------------------------------------------------------
>
>                 Key: FLINK-11747
>                 URL: https://issues.apache.org/jira/browse/FLINK-11747
>             Project: Flink
>          Issue Type: Wish
>          Components: ElasticSearch Connector
>            Reporter: Samir Desai
>            Priority: Major
>
> In the Elasticsearch6 connector, the [RestClientFactory|https://github.com/apache/flink/blob/release-1.6/flink-connectors/flink-connector-elasticsearch6/src/main/java/org/apache/flink/streaming/connectors/elasticsearch6/RestClientFactory.java#L31] allows users to customize the {{RestClientBuilder}}. However, certain customizations like adding [Sniffing|https://www.elastic.co/guide/en/elasticsearch/client/java-rest/master/_usage.html] 
> require access to the low-level rest client, which can be obtained through the high level rest client. The {{RestHighLevelClient}} is [instantiated|https://github.com/apache/flink/blob/master/flink-connectors/flink-connector-elasticsearch-base/src/main/java/org/apache/flink/streaming/connectors/elasticsearch/ElasticsearchSinkBase.java#L191] in the api call bridge, and is never exposed to the user.
> To my knowledge, the current Elasticsearch6 connector does not utilize sniffing or provide a way to add it in. The Elasticsearch6 connector should expose some type of access to the RestHighLevelClient to allow for custom sniffing. 



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