Github user aarondav commented on a diff in the pull request:
https://github.com/apache/spark/pull/2609#discussion_r18362788
--- Diff: core/src/main/scala/org/apache/spark/deploy/worker/Worker.scala
---
@@ -202,9 +205,20 @@ private[spark] class Worker(
// Spin up a separate thread (in a future) to do the dir cleanup;
don't tie up worker actor
val cleanupFuture = concurrent.future {
logInfo("Cleaning up oldest application directories in " + workDir
+ " ...")
--- End diff --
Also, perhaps add a logInfo on line 196 above when CLEANUP_ENABLED to say
like "Worker cleanup is enabled, so old application directories will be
deleted." I think this message on startup, plus the message on actual directory
deletion, is ideal.
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