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https://issues.apache.org/jira/browse/HIVE-25107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17346072#comment-17346072
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László Bodor commented on HIVE-25107:
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PR merged, thanks for the inputs [~pgaref], [~zmatyus]!
> Classpath logging should be on DEBUG level
> ------------------------------------------
>
> Key: HIVE-25107
> URL: https://issues.apache.org/jira/browse/HIVE-25107
> Project: Hive
> Issue Type: Improvement
> Reporter: László Bodor
> Assignee: László Bodor
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> This is since HIVE-21584
> I have a *72M* llap executor log file, then I grepped for only "thread class
> path", piped into a separate file and a result was a *22M* file...1/3-1/4 of
> the file was classpath info which is not usable for most of the time. This
> overwhelming amount of classpath info is not needed, assuming that classpath
> issues are reproducible with more or less effort, user should be responsible
> for turning on this expensive logging on demand. Not to mention performance
> implications which cannot be ignored beyond a certain amount of log messages.
> https://github.com/apache/hive/commit/a234475faa2cab2606f2a74eb9ca071f006998e2#diff-44b2ff3a3c4a6cfcaed0fcb40b74031844f8586e40a6f8261637e5ebcd558b73R4577
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