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https://issues.apache.org/jira/browse/FLINK-8690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16463760#comment-16463760
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ASF GitHub Bot commented on FLINK-8690:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/5940#discussion_r186022377
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
@@ -641,7 +641,8 @@ class AggregationCodeGenerator(
| java.util.Map.Entry entry = (java.util.Map.Entry)
mergeIt$i.next();
| Object k = entry.getKey();
--- End diff --
Change this line to `${classOf[Row].getCanonicalName} k =
(${classOf[Row].getCanonicalName}) entry.getKey();`
> Support distinct aggregation on group windowed streaming tables.
> ----------------------------------------------------------------
>
> Key: FLINK-8690
> URL: https://issues.apache.org/jira/browse/FLINK-8690
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Rong Rong
> Assignee: Rong Rong
> Priority: Major
>
> Currently, *FlinkLogicalAggregate / FlinkLogicalWindowAggregate* does not
> allow distinct aggregate.
> We are proposing to reuse distinct aggregate codegen work designed for
> *FlinkLogicalOverAggregate*, to support unbounded distinct aggregation on
> datastream as well.
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