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https://issues.apache.org/jira/browse/SPARK-16784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15960922#comment-15960922
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Torsten Scholak commented on SPARK-16784:
-----------------------------------------
I having this exact problem. I need to be able to change the log settings
depending on the job and/or the application. The method illustrated above, i.e.
specifying
spark.driver.extraJavaOptions=-Dlog4j.configuration=log4j.properties,
spark.executor.extraJavaOptions=-Dlog4j.configuration=log4j.properties
using spark-submit with "--files log4j.properties" does indeed NOT work.
However, I was surprised to find it suggested as solution on stackoverflow
(http://stackoverflow.com/questions/28454080/how-to-log-using-log4j-to-local-file-system-inside-a-spark-application-that-runs),
since it is in direct contradiction to issue described in this ticket.
[~jbacon] have you created a follow-up ticket?
> Configurable log4j settings
> ---------------------------
>
> Key: SPARK-16784
> URL: https://issues.apache.org/jira/browse/SPARK-16784
> Project: Spark
> Issue Type: Improvement
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Michael Gummelt
>
> I often want to change the logging configuration on a single spark job. This
> is easy in client mode. I just modify log4j.properties. It's difficult in
> cluster mode, because I need to modify the log4j.properties in the
> distribution in which the driver runs. I'd like a way of setting this
> dynamically, such as a java system property. Some brief searching showed
> that log4j doesn't seem to accept such a property, but I'd like to open up
> this idea for further comment. Maybe we can find a solution.
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