Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/22337#discussion_r215490599
--- Diff:
external/flume/src/test/scala/org/apache/spark/streaming/flume/FlumePollingStreamSuite.scala
---
@@ -58,6 +58,7 @@ class FlumePollingStreamSuite extends SparkFunSuite with
BeforeAndAfterAll with
_sc.stop()
_sc = null
}
--- End diff --
It seems that we need `try` for `_sc.stop()`.
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