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https://issues.apache.org/jira/browse/HIVE-26121?focusedWorklogId=753989&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-753989
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ASF GitHub Bot logged work on HIVE-26121:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/Apr/22 11:30
            Start Date: 07/Apr/22 11:30
    Worklog Time Spent: 10m 
      Work Description: pvary commented on PR #3181:
URL: https://github.com/apache/hive/pull/3181#issuecomment-1091622189

   I have missed this before, but do we really need to synchronize 
`DriverTxnHandler.endTransactionAndCleanup` and 
`DbTxnManager.java.stopHeartbeat` too?
   
   Otherwise LGTM




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

    Worklog Id:     (was: 753989)
    Time Spent: 40m  (was: 0.5h)

> Hive transaction rollback should be thread-safe
> -----------------------------------------------
>
>                 Key: HIVE-26121
>                 URL: https://issues.apache.org/jira/browse/HIVE-26121
>             Project: Hive
>          Issue Type: Task
>            Reporter: Denys Kuzmenko
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> When Hive query is being interrupted via cancel request, both the background 
> pool thread (HiveServer2-Background) executing the query and the HttpHandler 
> thread (HiveServer2-Handler) running the HiveSession.cancelOperation logic 
> will eventually trigger the below method:
> {code}
> DriverTxnHandler.endTransactionAndCleanup(boolean commit)
> {code}
> Since this method could be invoked concurrently we need to synchronize access 
> to it, so that only 1 thread would attempt to abort the transaction and stop 
> the heartbeat.



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