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https://issues.apache.org/jira/browse/SPARK-11162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14971520#comment-14971520
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Ryan Williams commented on SPARK-11162:
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Makes sense, some googling has left me with the impression that log4j doesn't
support this, so I guess I'll just modify {{log4j.properties}} going forward,
thanks.
Answering my other question from earlier: modifying {{conf/log4j.properties}}
seems to work in yarn-client mode; I guess I'd only tried
{{$SPARK_HOME/log4j.properties}} previously.
> Allow enabling debug logging from the command line
> --------------------------------------------------
>
> Key: SPARK-11162
> URL: https://issues.apache.org/jira/browse/SPARK-11162
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 1.5.1
> Reporter: Ryan Williams
> Priority: Minor
>
> Per [~vanzin] on [the user
> list|http://apache-spark-user-list.1001560.n3.nabble.com/how-to-set-log-level-of-spark-executor-on-YARN-using-yarn-cluster-mode-tp16528p16529.html],
> it would be nice if debug-logging could be enabled from the command line.
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