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https://issues.apache.org/jira/browse/FLINK-6091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981087#comment-15981087
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ASF GitHub Bot commented on FLINK-6091:
---------------------------------------
Github user hequn8128 commented on the issue:
https://github.com/apache/flink/pull/3733
Hi @fhueske , the latest commit is a bugfix. It mainly includes the
following contents:
1. request type add `CRow` support in `TableEnvironment`，so we can sink
with `CRow`
2. `getFieldInfo` add `CRow` support in `TableEnvironment`，so we can init a
`Table` from a `DataStream` of `CRow`
3. fix type erasure problem in `TableEnvironment` and
`DataStreamRetractionRules`
Thanks, Hequn
> Implement and turn on the retraction for aggregates
> ---------------------------------------------------
>
> Key: FLINK-6091
> URL: https://issues.apache.org/jira/browse/FLINK-6091
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: Shaoxuan Wang
> Assignee: Hequn Cheng
>
> Implement functions for generating and consuming retract messages for
> different aggregates.
> 1. add delete/add property to Row
> 2. implement functions for generating retract messages for unbounded groupBy
> 3. implement functions for handling retract messages for different aggregates.
> 4. handle retraction messages in CommonCorrelate and CommonCalc (retain
> Delete property).
> Note: Currently, only unbounded groupby generates retraction and it is
> working under unbounded and processing time mode. Hence, retraction is only
> supported for unbounded and processing time aggregations so far. We can add
> more retraction support later.
> supported now: unbounded groupby, unbounded and processing time over window
> unsupported now: group window, event time or bounded over window.
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