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From WangTaoTheTonic <>
Subject Who manage the log4j appender while running spark on yarn?
Date Fri, 19 Dec 2014 08:37:05 GMT
Hi guys, 

I recently ran spark on yarn and found spark didn't set any log4j properties
file in configuration or code. And the log4j logs was writing into stderr
file under ${yarn.nodemanager.log-dirs}/application_${appid}.

I wanna know which side(spark or hadoop) controll the appender? Have found
that related disscussion here:,
but I think spark code has changed a lot since then.

Any one could offer some guide? Thanks.

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