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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7206) Implementation of DataView to support state access for UDAGG
Date Thu, 20 Jul 2017 12:37:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094615#comment-16094615
] 

ASF GitHub Bot commented on FLINK-7206:
---------------------------------------

Github user wuchong commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4355#discussion_r128493316
  
    --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/AggregationCodeGenerator.scala
---
    @@ -357,6 +423,9 @@ class AggregationCodeGenerator(
                """.stripMargin
     
           if (needMerge) {
    +        if (accConfig.isDefined && accConfig.get.isUseState) {
    +          throw new CodeGenException("Not support merge when use state")
    --- End diff --
    
    Would be better to enrich this. "DataView doesn't support merge when the backend uses
state."


> Implementation of DataView to support state access for UDAGG
> ------------------------------------------------------------
>
>                 Key: FLINK-7206
>                 URL: https://issues.apache.org/jira/browse/FLINK-7206
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>            Reporter: Kaibo Zhou
>            Assignee: Kaibo Zhou
>
> Implementation of MapView and ListView to support state access for UDAGG.



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