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https://issues.apache.org/jira/browse/HIVE-27201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17716189#comment-17716189
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Zhihua Deng edited comment on HIVE-27201 at 10/10/23 1:14 AM:
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Attach a document to explain the case.
Thank you all for the test, review and merge the PR!
was (Author: dengzh):
Attach a document to elaborate the case.
Thank you all for the test, review and merge the PR!
> 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
> Labels: pull-request-available
> Fix For: 4.0.0-beta-1
>
> Attachments: HIVE-27201.pdf
>
> Time Spent: 7h 20m
> Remaining Estimate: 0h
>
> 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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