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Flink Jira Bot updated FLINK-18701: ----------------------------------- Labels: auto-unassigned stale-major (was: auto-unassigned) I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help the community manage its development. I see this issues has been marked as Major but is unassigned and neither itself nor its Sub-Tasks have been updated for 30 days. I have gone ahead and added a "stale-major" to the issue". If this ticket is a Major, please either assign yourself or give an update. Afterwards, please remove the label or in 7 days the issue will be deprioritized. > NOT NULL constraint is not guaranteed when aggregation split is enabled > ----------------------------------------------------------------------- > > Key: FLINK-18701 > URL: https://issues.apache.org/jira/browse/FLINK-18701 > Project: Flink > Issue Type: Bug > Components: Table SQL / Planner > Affects Versions: 1.11.1 > Reporter: Jark Wu > Priority: Major > Labels: auto-unassigned, stale-major > > Take the following test: > {{org.apache.flink.table.planner.runtime.stream.sql.SplitAggregateITCase#testMinMaxWithRetraction}} > {code:scala} > val t1 = tEnv.sqlQuery( > s""" > |SELECT > | c, MIN(b), MAX(b), COUNT(DISTINCT a) > |FROM( > | SELECT > | a, COUNT(DISTINCT b) as b, MAX(b) as c > | FROM T > | GROUP BY a > |) GROUP BY c > """.stripMargin) > val sink = new TestingRetractSink > t1.toRetractStream[Row].addSink(sink) > env.execute() > println(sink.getRawResults) > {code} > The query schema is > {code:java} > root > |-- c: INT > |-- EXPR$1: BIGINT NOT NULL > |-- EXPR$2: BIGINT NOT NULL > |-- EXPR$3: BIGINT NOT NULL > {code} > This should be correct as the count is never null and thus min/max are never > null, however, we can receive null in the sink. > {code} > List((true,1,null,null,1), (true,2,2,2,1), (false,1,null,null,1), > (true,6,2,2,1), (true,5,1,1,0), (false,5,1,1,0), (true,5,1,1,2), > (true,4,2,2,0), (false,5,1,1,2), (true,5,1,3,2), (false,4,2,2,0), > (false,5,1,3,2), (true,5,1,4,2)) > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)