Andrew Xue created SPARK-48622:
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Summary: 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
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!
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