twalthr commented on a change in pull request #18439:
URL: https://github.com/apache/flink/pull/18439#discussion_r790615977
##########
File path:
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/plan/nodes/exec/common/CommonExecSinkITCase.java
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@@ -426,6 +429,26 @@ public void testNullEnforcer() throws ExecutionException,
InterruptedException {
}
}
+ @Test
+ public void testSelfUnionWatermarkPropagation() throws Exception {
+ DataStream<Integer> dataStream = env.fromElements(1, 2, 3);
+
+ WatermarkOperator operator = new
WatermarkOperator(env.getParallelism());
+ dataStream
+ .union(dataStream)
+ .transform("Watermark Operator", BasicTypeInfo.INT_TYPE_INFO,
operator)
+ .addSink(new DiscardingSink<>());
Review comment:
This might have been a misunderstanding: What I meant with a test on the
table side is an actual table sink, to test the story end to end. Using the
original example from the JIRA issue with `fromValues` and our mock table sink.
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