Github user ksakellis commented on a diff in the pull request:
https://github.com/apache/spark/pull/4192#discussion_r23629409
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnAllocator.scala ---
@@ -60,6 +62,9 @@ private[yarn] class YarnAllocator(
import YarnAllocator._
+ // RackResolver logs an INFO message whenever it resolves a rack, which
is way too often.
+ Logger.getLogger(classOf[RackResolver]).setLevel(Level.WARN)
--- End diff --
Well, I disagree. A user will get very frustrated if they are debugging an
issue and they can't turn on the logging. Can you add a check:
Logger.getLogger(classOf[RackResolver]).getLevel() != null at least you won't
be overriding the logging level if it is set.
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