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From WangTaoTheTonic <>
Subject Re: Who manage the log4j appender while running spark on yarn?
Date Tue, 23 Dec 2014 02:41:23 GMT
After some discussions with Hadoop guys, I got how the mechanism works.
If we don't add -Dlog4j.configuration into java options to the container(AM
or executors), they will use any) under container's
classpath(extraClasspath plus yarn.application.classpath).

If we wanna custom our log4j configuration, we should add
in spark-defaults.conf file.

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