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Posted to issues@spark.apache.org by "Hyukjin Kwon (Jira)" <ji...@apache.org> on 2020/05/06 03:42:00 UTC

[jira] [Created] (SPARK-31647) Deprecate 'spark.sql.optimizer.metadataOnly'

Hyukjin Kwon created SPARK-31647:
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             Summary: Deprecate 'spark.sql.optimizer.metadataOnly'
                 Key: SPARK-31647
                 URL: https://issues.apache.org/jira/browse/SPARK-31647
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Hyukjin Kwon
            Assignee: Hyukjin Kwon


This optimization can cause a potential correctness issue, see also SPARK-26709.
Also, it seems difficult to extend the optimization. Basically you should whitelist all available functions.

Seems we should rather deprecate and remove this.



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