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https://issues.apache.org/jira/browse/KYLIN-1992?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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hongbin ma resolved KYLIN-1992.
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Resolution: Fixed
> Clear ThreadLocal Contexts when query failed before scaning HBase
> -----------------------------------------------------------------
>
> Key: KYLIN-1992
> URL: https://issues.apache.org/jira/browse/KYLIN-1992
> Project: Kylin
> Issue Type: Bug
> Reporter: kangkaisen
> Assignee: kangkaisen
> Priority: Minor
> Fix For: v1.5.4
>
> Attachments: KYLIN-1992.patch
>
>
> currently, we call `OLAPContext.clearThreadLocalContexts()` function before
> scaning HBase.
> if query failed before scaning HBase, we would get wrong `realization` of the
> query in the log possibly.
> Because the thread pool of Tomcat multiplexed the thread and didn't clear
> ThreadLocal variable.
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