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https://issues.apache.org/jira/browse/FLINK-19668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327607#comment-17327607
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Flink Jira Bot commented on FLINK-19668:
----------------------------------------
This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Fix the plan regression by Calcite upgrade to 1.26
> --------------------------------------------------
>
> Key: FLINK-19668
> URL: https://issues.apache.org/jira/browse/FLINK-19668
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.11.3
> Reporter: Danny Chen
> Priority: Major
> Labels: stale-major
>
> See org.apache.flink.table.plan.TimeIndicatorConversionTest.testUnion,
> {code:java}
> @Test
> def testUnion(): Unit = {
> val util = streamTestUtil()
> val t = util.addTable[(Long, Long, Int)]("MyTable", 'rowtime.rowtime,
> 'long, 'int)
> val result = t.unionAll(t).select('rowtime)
> val expected = unaryNode(
> "DataStreamCalc",
> binaryNode(
> "DataStreamUnion",
> streamTableNode(t),
> streamTableNode(t),
> term("all", "true"),
> term("union all", "rowtime, long, int")
> ),
> term("select", "rowtime")
> )
> util.verifyTable(result, expected)
> }
> {code}
> The regression is because the new plan has same cost with the old, thus, the
> old was not picked as the best.
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