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https://issues.apache.org/jira/browse/TRAFODION-2696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16105691#comment-16105691
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ASF GitHub Bot commented on TRAFODION-2696:
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Github user asfgit closed the pull request at:
https://github.com/apache/incubator-trafodion/pull/1189
> control query cancel qid fails with error 8031 sometimes
> --------------------------------------------------------
>
> Key: TRAFODION-2696
> URL: https://issues.apache.org/jira/browse/TRAFODION-2696
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-exe
> Affects Versions: any
> Reporter: Selvaganesan Govindarajan
> Assignee: Selvaganesan Govindarajan
> Fix For: 2.2-incubating
>
>
> At times even the long running query fails with the following error message
> *** ERROR[8031] Server declined cancel request for query ID
> MXID11000025653212367983150736000000000000206U3333300_106___SQLCI_DML_LAST__.
> The query is not registered with the cancel broker.
> This error can happen if the ssmp process is restarted after the query start
> executing. When the ssmp is restarted, the posted query started message is
> lost and hence the query can't be cancelled. However, we can minimize this
> failure by avoiding ssmp restarts within the engine whereever possible.
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