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https://issues.apache.org/jira/browse/SPARK-2007?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017160#comment-14017160
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Issac Buenrostro commented on SPARK-2007:
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This can be solved by changing the name of the local resource pointing to the
log4j configuration (for example to spark.log4j.properties). In a local version
of Spark I have implemented this fix.
Other options would be to name the local resource with the same name as the
original file, or make this name configurable.
> Spark on YARN picks up hadoop log4j.properties even if SPARK_LOG4J_CONF is set
> ------------------------------------------------------------------------------
>
> Key: SPARK-2007
> URL: https://issues.apache.org/jira/browse/SPARK-2007
> Project: Spark
> Issue Type: Bug
> Components: YARN
> Affects Versions: 1.0.0
> Reporter: Issac Buenrostro
>
> When running Spark on YARN, with SPARK_LOG4J_CONF environment variable set,
> containers might still pick up a different log4j configuration.
> spark-yarn will create a local resource in YARN called log4j.properties,
> which is included in the classpath. However, there might be other
> log4j.properties files in the classpath which might be chosen instead.
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