[jira] [Commented] (HIVE-26121) Hive transaction rollback should be thread-safe

["Denys Kuzmenko (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-26121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17521579#comment-17521579 ] 

Denys Kuzmenko commented on HIVE-26121:
---------------------------------------

Merged to master.
[~pvary], thank you for the review!

> 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: 1h
>  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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