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https://issues.apache.org/jira/browse/HIVE-10893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14569533#comment-14569533
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Sergey Shelukhin commented on HIVE-10893:
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There's certain difficulty of exposing it from service module to exec module;
still, should be pretty easy to add in HS2 class, startHiveServer2, etc.
> Expose a global isHS2 check
> ---------------------------
>
> Key: HIVE-10893
> URL: https://issues.apache.org/jira/browse/HIVE-10893
> Project: Hive
> Issue Type: Bug
> Reporter: Sergey Shelukhin
> Priority: Minor
>
> Currently, HS2 flag can only be checked via SessionState. That's fragile
> (SessionState can be null and it's not clear when the flag is set, you have
> to read the code and ascertain it would be set early enough in init for your
> purposes), and also unnecessary because you are either in HS2 or not - global
> flag should suffice
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