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https://issues.apache.org/jira/browse/SPARK-31633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated SPARK-31633:
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Comment: was deleted
(was: User 'dongjoon-hyun' has created a pull request for this issue:
https://github.com/apache/spark/pull/28446)
> Upgrade SLF4J from 1.7.16 to 1.7.30
> -----------------------------------
>
> Key: SPARK-31633
> URL: https://issues.apache.org/jira/browse/SPARK-31633
> Project: Spark
> Issue Type: Bug
> Components: Build
> Affects Versions: 3.0.0
> Reporter: Dongjoon Hyun
> Priority: Major
>
> SLF4J 1.7.23+ is required to enable `slf4j-log4j12` with MDC feature to run
> under Java 9. Also, this will bring all latest bug fixes.
> - http://www.slf4j.org/news.html
> {quote}When running under Java 9, log4j version 1.2.x is unable to correctly
> parse the "java.version" system property. Assuming an inccorect Java version,
> it proceeded to disable its MDC functionality. The slf4j-log4j12 module
> shipping in this release fixes the issue by tweaking MDC internals by
> reflection, allowing log4j to run under Java 9. See also SLF4J-393.
> Fixed issue EventRecodingLogger not saving marker data in the event. This
> issue was reported in SLF4J-379 by Manish Soni with Jonas Neukomm providing
> the relevant PR.
> The slf4j-simple module now uses the latest reference to System.out or
> System.err. In previous releases the reference was set at the beginning and
> re-used. This change fixes SLF4J-389 reported by Igor Polevoy.{quote}
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