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https://issues.apache.org/jira/browse/HADOOP-17524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324457#comment-17324457
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Akira Ajisaka commented on HADOOP-17524:
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For this feature, there are no compatible way to upgrade to log4j2 because
EventCounter extends org.apache.log4j.AppenderSkelton. The ideal way is to
deprecate in Hadoop 3.4 and remove in Hadoop 4.0, but I think the plan takes
too much time.
> Remove EventCounter and Log counters from JVM Metrics
> -----------------------------------------------------
>
> Key: HADOOP-17524
> URL: https://issues.apache.org/jira/browse/HADOOP-17524
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Akira Ajisaka
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> EventCount is using Log4J 1.x API. We need to remove it to drop Log4J 1.x.
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