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https://issues.apache.org/jira/browse/FLINK-4820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15748456#comment-15748456
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Robert Metzger commented on FLINK-4820:
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Log4j 2 supports dynamic log level changes. I've filed a separate JIRA for
adding support for Log4j2: FLINK-5339
> Slf4j / log4j version upgrade to support dynamic change of log levels.
> ----------------------------------------------------------------------
>
> Key: FLINK-4820
> URL: https://issues.apache.org/jira/browse/FLINK-4820
> Project: Flink
> Issue Type: Task
> Components: Build System
> Reporter: Zhenzhong Xu
> Assignee: Stephan Ewen
>
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