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Posted to issues@flink.apache.org by "Sergey Nuyanzin (Jira)" <ji...@apache.org> on 2022/01/19 09:53:00 UTC

[jira] [Commented] (FLINK-25699) Use HashMap for MAP value constructors

    [ https://issues.apache.org/jira/browse/FLINK-25699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478500#comment-17478500 ] 

Sergey Nuyanzin commented on FLINK-25699:
-----------------------------------------

Hi [~twalthr]
Am I correct that this issue is related to your comment in Map to Map casting PR here https://github.com/apache/flink/pull/18287#discussion_r786612124

If yes and if you don't mind I would pick this issue

> Use HashMap for MAP value constructors
> --------------------------------------
>
>                 Key: FLINK-25699
>                 URL: https://issues.apache.org/jira/browse/FLINK-25699
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / Runtime
>            Reporter: Timo Walther
>            Priority: Major
>
> Currently, the usage of maps is inconsistent. It is not ensured that duplicate keys get eliminated. For CAST and output conversion this is solved. However, we should have a similar implementation in MAP value constructor like in CAST.



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