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Posted to issues@hive.apache.org by "Zhihua Deng (Jira)" <ji...@apache.org> on 2023/03/31 09:17:00 UTC

[jira] [Assigned] (HIVE-27201) Inconsistency between session Hive and thread-local Hive may cause HS2 deadlock

     [ https://issues.apache.org/jira/browse/HIVE-27201?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhihua Deng reassigned HIVE-27201:
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> Inconsistency between session Hive and thread-local Hive may cause HS2 deadlock
> -------------------------------------------------------------------------------
>
>                 Key: HIVE-27201
>                 URL: https://issues.apache.org/jira/browse/HIVE-27201
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>            Reporter: Zhihua Deng
>            Assignee: Zhihua Deng
>            Priority: Major
>
> The HiveServer2’s server handler can switch to process the operation from other session, in such case, the Hive cached in ThreadLocal is not the same as the Hive in SessionState, and can be referenced by another session. 
> If the two handlers swap their sessions to process the DatabaseMetaData request, and the HiveMetastoreClientFactory obtains the Hive via Hive.get(), then there is a chance that the deadlock can happen.



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