Github user zsxwing commented on a diff in the pull request: https://github.com/apache/spark/pull/15675#discussion_r86030559 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/streaming/StreamingQuerySuite.scala --- @@ -290,7 +290,10 @@ class StreamingQuerySuite extends StreamTest with BeforeAndAfter with Logging { // A StreamingQueryListener that gets the query status after the first completed trigger val listener = new StreamingQueryListener { @volatile var firstStatus: StreamingQueryStatus = null - override def onQueryStarted(queryStarted: QueryStartedEvent): Unit = { } --- End diff -- nit: please add `@volatile`
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