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https://issues.apache.org/jira/browse/NIFI-11686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17844380#comment-17844380
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Chris Sampson commented on NIFI-11686:
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[~joewitt] I agree completely.

There was an email from some AWS engineers a long time ago about contributing 
an OpenSearch capability, but that hasn't materialised unfortuantely.

I think a sensible thing would be to:
* test the existing {{ElasticsearchClientServiceImpl}} against OpenSearch to 
see whether it works
* upgrade the Elasticsearch low-level REST client library to the latest 
(currently {{8.13.3}}) and re-test the OpenSearch connectivity (it is assumed 
from some reading/online articles that this may not work, but I for one have 
never confirmed it as I've never had occasion to use OpenSearch)
** if this works, great, just upgrade the library
** if this highlights connectivity problems, raise a ticket/change for 
implementing an OpenSearch-based implementation of the 
{{ElasticsearchClientService}} interface in NiFi (which will likely result in 
some refactoring of common functionality between the two {{Impl}}s)

> Update elasticsearch.client.version to 7.17.10
> ----------------------------------------------
>
>                 Key: NIFI-11686
>                 URL: https://issues.apache.org/jira/browse/NIFI-11686
>             Project: Apache NiFi
>          Issue Type: Improvement
>    Affects Versions: 1.22.0
>            Reporter: Mike R
>            Assignee: Jeyassri Balachandran
>            Priority: Major
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> Update elasticsearch.client.version to 7.17.10



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