sarutak commented on a change in pull request #32652:
URL: https://github.com/apache/spark/pull/32652#discussion_r641897974



##########
File path: 
external/docker-integration-tests/src/test/scala/org/apache/spark/sql/jdbc/DockerJDBCIntegrationSuite.scala
##########
@@ -99,6 +99,8 @@ abstract class DockerJDBCIntegrationSuite extends 
SharedSparkSession with Eventu
   val connectionTimeout = timeout(5.minutes)
   val keepContainer =
     sys.props.getOrElse("spark.test.docker.keepContainer", "false").toBoolean
+  val removePulledImage =
+    sys.props.getOrElse("spark.test.docker.removePulledImage", 
"true").toBoolean

Review comment:
       To avoid behavior change, it would be better to keep it `false` but 
keeping container images in the local repository is side effect and done 
implicitly before this change. So I thought it is better do keep the images 
only if users can explicitly set the property to `false`.
   Any thoughts? @dongjoon-hyun @HyukjinKwon 




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