Github user gengliangwang commented on a diff in the pull request: https://github.com/apache/spark/pull/20223#discussion_r161006918 --- Diff: core/src/test/java/org/apache/spark/launcher/SparkLauncherSuite.java --- @@ -137,7 +139,9 @@ public void testInProcessLauncher() throws Exception { // Here DAGScheduler is stopped, while SparkContext.clearActiveContext may not be called yet. // Wait for a reasonable amount of time to avoid creating two active SparkContext in JVM. --- End diff -- Here Vanzin is waiting for the active SparkContext being empty.
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