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Posted to issues@spark.apache.org by "Zhenhua Wang (Jira)" <ji...@apache.org> on 2019/12/24 02:35:00 UTC

[jira] [Created] (SPARK-30339) Avoid to fail twice in function lookup

Zhenhua Wang created SPARK-30339:
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             Summary: Avoid to fail twice in function lookup
                 Key: SPARK-30339
                 URL: https://issues.apache.org/jira/browse/SPARK-30339
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.4.5, 3.0.0
            Reporter: Zhenhua Wang


Currently if function lookup fails, spark will give it a second change by casting decimal type to double type. But for cases where decimal type doesn't exist, it's meaningless to lookup again and causes extra cost like unnecessary metastore access.



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