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https://issues.apache.org/jira/browse/FLINK-7239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17328740#comment-17328740
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Flink Jira Bot commented on FLINK-7239:
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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.
> GroupWindow and OverWindow aggregates do not check correctly for updating
> input
> -------------------------------------------------------------------------------
>
> Key: FLINK-7239
> URL: https://issues.apache.org/jira/browse/FLINK-7239
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.3.1, 1.4.0
> Reporter: Fabian Hueske
> Priority: Major
> Labels: stale-major
>
> The streaming table operators for group-window and over-window aggregates do
> only support append-only input, i.e., no updates.
> However, the {{DataStreamGroupWindowAggregate}} {{DataStreamOverAggregate}}
> RelNodes do only check that the input does not have retraction messages which
> is only one possible encoding of updates.
> We should fix the RelNodes to check if the input is append-only using the
> {{UpdatingPlanChecker}} similar to {{DataStreamWindowJoin}}.
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