[jira] [Commented] (FLINK-10117) REST API for Queryable State

["Eron Wright (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-10117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595795#comment-16595795 ] 

Eron Wright  commented on FLINK-10117:
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Note that the SSL feature for Queryable State (FLINK-5029) will treat the existing endpoints as 'internal' communication, which means that the client must possess the internal cluster keypair.   That's an obvious usability issue that might best be addressed by this enhancement (FLINK-10117).

> REST API for Queryable State
> ----------------------------
>
>                 Key: FLINK-10117
>                 URL: https://issues.apache.org/jira/browse/FLINK-10117
>             Project: Flink
>          Issue Type: Improvement
>          Components: Queryable State, REST
>    Affects Versions: 1.6.0
>            Reporter: Elias Levy
>            Priority: Major
>
> At the moment, queryable state requires a JVM based client that can make use of the Java queryable state client API in flink-queryable-state-client artifact.  In addition, the client requires a state descriptor matching the queried state, which tightly couples the Flink job and query state clients.
> I propose that queryable state become accessible via a REST API.  FLINK-7040 mentions this possibility, but does not specify work towards that goal.
> I suggest that to enable queryable state over REST, users define JSON serializers via the state descriptors.  
> This would allow queryable state clients to be developed in any language, not require them to use a Flink client library, and permit them to be loosely coupled with the job, as they could generically parse the returned JSON.
>  



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