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https://issues.apache.org/jira/browse/HUDI-4946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sivabalan narayanan closed HUDI-4946.
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Resolution: Fixed
> merge into with no preCombineField has dup row in only insert
> -------------------------------------------------------------
>
> Key: HUDI-4946
> URL: https://issues.apache.org/jira/browse/HUDI-4946
> Project: Apache Hudi
> Issue Type: Bug
> Components: spark-sql
> Reporter: KnightChess
> Assignee: KnightChess
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.12.2
>
>
> a table with precombineField use diff merge into sql has different result.
> If merge sql with matchAction will have no dup key result, but when merge sql
> only has insertAction will have dup result if we not set
> `hoodie.combine.before.insert=true`.
> I think merge into for the same table need has consistent behavior.
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