[GitHub] [spark] Kimahriman commented on pull request #41195: [SPARK-43534][BUILD] Add log4j-1.2-api and log4j-slf4j2-impl to classpath if active hadoop-provided

["Kimahriman (via GitHub)" <gi...@apache.org>]

Kimahriman commented on PR #41195:
URL: https://github.com/apache/spark/pull/41195#issuecomment-1552245794

   Maybe similar reason I made https://github.com/apache/spark/pull/37694 a while ago? Basically Spark logging setup assumes log4j2, but with hadoop provided you get 1.x from Hadoop. So you get weird logging behavior. We just have both providers in the class path and slf seems to pick the 2.x one


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