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https://issues.apache.org/jira/browse/KYLIN-1992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15460754#comment-15460754
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kangkaisen commented on KYLIN-1992:
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Thanks for your comment.
Firstly, this minor issue could be reproduced stably. we could make a
continuous and successful query go through while loop, in the meantime，we could
make a failed query with syntax error . In this way, we will get wrong
`Realization Names` in the failed query log and the `Realization Names`
belong to the successful query.
Secondly, most of failed query had this issue failed because the sql parsed
wrong and didn't start to scan HBase.
Thirdly, I am sorry for I did't consider the integration query tests.
> 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
> 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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