arunmahadevan commented on a change in pull request #23912: [SPARK-21029][SS]
StreamingQuery should be stopped when the SparkSession is stopped
URL: https://github.com/apache/spark/pull/23912#discussion_r261440283
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File path: sql/core/src/main/scala/org/apache/spark/sql/SparkSession.scala
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@@ -723,6 +725,11 @@ class SparkSession private(
* @since 2.0.0
*/
def stop(): Unit = {
+ if (!stopped.compareAndSet(false, true)) {
+ logInfo("SparkSession already stopped.")
Review comment:
Idea was to prevent multiple invocations of SparkSession.stop to prevent
multiple concurrent invocations of `stopStreamingQueries`. This prints a
session specific message if multiple stop is invoked on the session.
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