fix flake

Author: jose-torres

external/kafka-0-10-sql/src/test/scala/org/apache/spark/sql/kafka010/KafkaContinuousSourceSuite.scala

@@ -18,7 +18,7 @@
 package org.apache.spark.sql.kafka010
 
 import org.apache.spark.sql.Dataset
-import org.apache.spark.sql.execution.datasources.v2.StreamingDataSourceV2Relation
+import org.apache.spark.sql.execution.datasources.v2.DataSourceV2ScanExec
 import org.apache.spark.sql.streaming.Trigger
 
 // Run tests in KafkaSourceSuiteBase in continuous execution mode.
@@ -60,10 +60,10 @@ class KafkaContinuousSourceTopicDeletionSuite extends KafkaContinuousTest {
         testUtils.createTopic(topic2, partitions = 5)
         eventually(timeout(streamingTimeout)) {
           assert(
-            query.lastExecution.logical.collectFirst {
-              case r: StreamingDataSourceV2Relation
-                  if r.readSupport.isInstanceOf[KafkaContinuousReadSupport] =>
-                r.scanConfigBuilder.build().asInstanceOf[KafkaContinuousScanConfig]
+            query.lastExecution.executedPlan.collectFirst {
+              case scan: DataSourceV2ScanExec
+                if scan.readSupport.isInstanceOf[KafkaContinuousReadSupport] =>
+                scan.scanConfig.asInstanceOf[KafkaContinuousScanConfig]
             }.exists { config =>
               // Ensure the new topic is present and the old topic is gone.
               config.knownPartitions.exists(_.topic == topic2)