Github user mallman closed the pull request at:
https://github.com/apache/spark/pull/14811
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GitHub user mallman opened a pull request:
https://github.com/apache/spark/pull/14811
[SPARK-17231][CORE] Avoid building debug or trace log messages unless
This is simply a backport of #14798 to `branch-2.0`. This backport omits
the change to `ExternalShuffleBlockHandler.java`. In