davidradl commented on code in PR #27167:
URL: https://github.com/apache/flink/pull/27167#discussion_r2481954063


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flink-table/flink-table-planner/src/test/scala/org/apache/flink/table/planner/plan/stream/sql/DeltaJoinTest.scala:
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@@ -624,6 +624,21 @@ class DeltaJoinTest extends TableTestBase {
       ExplainDetail.PLAN_ADVICE)
   }
 
+  @Test
+  def testLookupTableWithCache(): Unit = {

Review Comment:
   Is there an end to end test we can add to drive this code outside of 
explain? If this issue is explain only ,then we should mention the situations 
that the user can hit this in the Jira or PR text - so people can find it 
easier. 



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