Github user liorchaga commented on the pull request:
https://github.com/apache/spark/pull/4998#issuecomment-78499766
We are using log4j 2.x in our executor code. I tried adding log4j 2.x
dependencies using spark.executor.extraClassPath, but then we have both log4j
1.2 and 2.x in our classpath (1.2 is shaded in spark-assembly).
Maybe I'm missing something here, but as I understand I must exclude the
log4j 1.2 dependencies to get it working properly.
We don't mind having a profile for just excluding the log4j 1.2
dependencies, and than adding the 2.x jars with extraClassPath, if that is more
acceptable.
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