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https://issues.apache.org/jira/browse/SPARK-48622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Xue updated SPARK-48622:
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Description:
SQLConf.caseSensitiveAnalsysis is evaluated for all (existing and added)
columns in an ALTER ADD COLUMN query. For a query on a table with 10k columns
and adding 1 new column, 50% of cpu time is spent in SQLConf.getConf:
was:
SQLConf.caseSensitiveAnalsysis is evaluated for all (existing and added)
columns in an ALTER ADD COLUMN query. For a query on a table with 10k columns
and adding 1 new column, 50% of cpu time is spent in SQLConf.getConf:
!image-2024-06-13-12-50-06-893.png|width=566,height=434!
> 50% cpu time spent on SQLConf.getConf in ALTER ADD COLUMN query
> ---------------------------------------------------------------
>
> Key: SPARK-48622
> URL: https://issues.apache.org/jira/browse/SPARK-48622
> Project: Spark
> Issue Type: Bug
> Components: Optimizer
> Affects Versions: 3.5.1
> Reporter: Andrew Xue
> Priority: Major
>
> SQLConf.caseSensitiveAnalsysis is evaluated for all (existing and added)
> columns in an ALTER ADD COLUMN query. For a query on a table with 10k columns
> and adding 1 new column, 50% of cpu time is spent in SQLConf.getConf:
>
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