Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/1222#discussion_r15477287
--- Diff:
core/src/main/scala/org/apache/spark/deploy/history/FsHistoryProvider.scala ---
@@ -87,8 +94,12 @@ private[history] class FsHistoryProvider(conf:
SparkConf) extends ApplicationHis
}
checkForLogs()
- logCheckingThread.setDaemon(true)
- logCheckingThread.start()
+
+ // Treat 0 as "disable the background thread", mostly for testing.
+ if (UPDATE_INTERVAL_MS > 0) {
--- End diff --
Doesn't an interval of 0 technically mean it's constantly checking? It
might make sense to make the test value MAX_INTEGER or something huge
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