KnightChess created HUDI-4946:
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Summary: 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
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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