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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/04/01 00:47:00 UTC
[jira] [Work logged] (HIVE-27201) Inconsistency between session Hive and thread-local Hive may cause HS2 deadlock

     [ https://issues.apache.org/jira/browse/HIVE-27201?focusedWorklogId=854282&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-854282 ]

ASF GitHub Bot logged work on HIVE-27201:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 01/Apr/23 00:46
            Start Date: 01/Apr/23 00:46
    Worklog Time Spent: 10m 
      Work Description: sonarcloud[bot] commented on PR #4180:
URL: https://github.com/apache/hive/pull/4180#issuecomment-1492762401

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Issue Time Tracking
-------------------

    Worklog Id:     (was: 854282)
    Time Spent: 50m  (was: 40m)

> 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
>          Time Spent: 50m
>  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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