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https://issues.apache.org/jira/browse/HIVE-4239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14563440#comment-14563440
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Thejas M Nair commented on HIVE-4239:
-------------------------------------
The jdbc driver does not allow for concurrent compile to happen within a jdbc
session because it has locks around the thrift client calls (actually, its
partly a work in progress).
However, if you consider Hue to be a mainline scenario, then it happens in
mainline scenario. I am not sure about the case with third party odbc drivers.
This change has potential to cause even more issues when that happens. So I
would reccomend having serial compile within a single session for now. I was
wrong when I said the change to make driver.compile syncrhonized would help. We
would actually need to synchronize on current SesionState object.
> Remove lock on compilation stage
> --------------------------------
>
> Key: HIVE-4239
> URL: https://issues.apache.org/jira/browse/HIVE-4239
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2, Query Processor
> Reporter: Carl Steinbach
> Assignee: Sergey Shelukhin
> Attachments: HIVE-4239.patch
>
>
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