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https://issues.apache.org/jira/browse/HIVE-11488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15020671#comment-15020671
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Aihua Xu commented on HIVE-11488:
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[~leftylev] Probably we need to add the doc to how to configure logging, but
seems we don't have a section for that since it's kind of general doc for
log4j. But for MDC logging, we need to mention that we should use %X{queryId}
and %X{sessionId} to print out queryId and sessionId.
> Add sessionId and queryId info to HS2 log
> -----------------------------------------
>
> Key: HIVE-11488
> URL: https://issues.apache.org/jira/browse/HIVE-11488
> Project: Hive
> Issue Type: New Feature
> Components: Logging
> Affects Versions: 2.0.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Attachments: HIVE-11488.2.patch, HIVE-11488.3.patch, HIVE-11488.patch
>
>
> Session is critical for a multi-user system like Hive. Currently Hive doesn't
> log seessionId to the log file, which sometimes make debugging and analysis
> difficult when multiple activities are going on at the same time and the log
> from different sessions are mixed together.
> Currently, Hive already has the sessionId saved in SessionState and also
> there is another sessionId in SessionHandle (Seems not used and I'm still
> looking to understand it). Generally we should have one sessionId from the
> beginning in the client side and server side. Seems we have some work on that
> side first.
> The sessionId then can be added to log4j supported mapped diagnostic context
> (MDC) and can be configured to output to log file through the log4j property.
> MDC is per thread, so we need to add sessionId to the HS2 main thread and
> then it will be inherited by the child threads.
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