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Posted to issues@spark.apache.org by "Tymofii (Jira)" <ji...@apache.org> on 2022/09/06 04:34:00 UTC

[jira] [Updated] (SPARK-40351) Spark Sum increases the precision of DecimalType arguments by 10

     [ https://issues.apache.org/jira/browse/SPARK-40351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tymofii updated SPARK-40351:
----------------------------
    Description: 
Currently in Spark automatically increases Decimal field by 10 (hard coded value) after SUM aggregate operation - [https://github.com/apache/spark/blob/branch-3.2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala#L1877.]

There are a couple of questions:
 # Why was 10 chosen as default one?
 # Does it make sense to allow the user to override this value via configuration? 

  was:
Currently in Spark automatically increases Decimal field by 10 (hard coded value) after SUM aggregate operation - [https://github.com/apache/spark/blob/branch-3.2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala#L1877.]

There are a couple of questions:
 # Why was 10 chosen as default one?
 # Is it make sense to allow the user to override this value via configuration? 


> Spark Sum increases the precision of DecimalType arguments by 10
> ----------------------------------------------------------------
>
>                 Key: SPARK-40351
>                 URL: https://issues.apache.org/jira/browse/SPARK-40351
>             Project: Spark
>          Issue Type: Question
>          Components: Optimizer
>    Affects Versions: 3.2.0
>            Reporter: Tymofii
>            Priority: Minor
>
> Currently in Spark automatically increases Decimal field by 10 (hard coded value) after SUM aggregate operation - [https://github.com/apache/spark/blob/branch-3.2/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala#L1877.]
> There are a couple of questions:
>  # Why was 10 chosen as default one?
>  # Does it make sense to allow the user to override this value via configuration? 



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