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https://issues.apache.org/jira/browse/HIVE-4226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13619263#comment-13619263
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Eric Hanson commented on HIVE-4226:
-----------------------------------
This sounds like a great addition. We're working to speed up Hive with
vectorized query execution and are thinking ahead about reducing process
overhead by re-using processes and introducing multi-threading. This Jira
should help with that. Please post a list of known issues or a design
discussion if you have one.
> Cleanup non-threadsafe code in Hive
> -----------------------------------
>
> Key: HIVE-4226
> URL: https://issues.apache.org/jira/browse/HIVE-4226
> Project: Hive
> Issue Type: Improvement
> Reporter: Sivaramakrishnan Narayanan
>
> There is some code in Hive that is not threadsafe. These usually bubble up as
> problems in Hive Server. This JIRA tracks fixing (hopefully, all) of these
> issues.
> Some context: we've implemented a multi-tenant (multiple dbs), multi-threaded
> hive server at Qubole (QHS) which is running in production for a couple of
> months now. As part of this effort, we've fixed a number of instances of
> non-threadsafe code. I'm looking to contribute this back to the community.
> Note that there is no new functionality here - just some better hygiene. If
> there are any stress tests that have revealed hive server bugs in the past,
> it will be great if they can be added to the jira.
> Also, this is my first attempt at contributing to Apache, so please forgive
> any mistakes.
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