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https://issues.apache.org/jira/browse/PHOENIX-7025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17773847#comment-17773847
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ASF GitHub Bot commented on PHOENIX-7025:
-----------------------------------------

palashc commented on PR #1666:
URL: https://github.com/apache/phoenix/pull/1666#issuecomment-1756417952

   @shahrs87 Lets wait for https://github.com/apache/phoenix/pull/1702 before 
merging this PR. 




> Create a new RPC to validate last ddl timestamp for read requests.
> ------------------------------------------------------------------
>
>                 Key: PHOENIX-7025
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-7025
>             Project: Phoenix
>          Issue Type: Sub-task
>            Reporter: Rushabh Shah
>            Assignee: Palash Chauhan
>            Priority: Major
>
> Introduce a new RPC request from phoenix client to any region server via 
> PhoenixRegionServerEndpoint#validateLastDDLTimestamp. Since the last ddl 
> timestamp cache is maintained by all the regionservers, you can choose any 
> regionserver randomly. In future, we can make this rpc more resilient by 
> sending this rpc to multiple regionservers simultaneously.
> If phoenix client throws StaleMetadataCacheException then invalidate the 
> cache on the client side and retry executeQuery method while fetching the 
> updated metadata from SYSCAT regionserver.



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