Cheng Lian created SPARK-23486:
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Summary: LookupFunctions should not check the same function name
more than once
Key: SPARK-23486
URL: https://issues.apache.org/jira/browse/SPARK-23486
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.1, 2.3.0
Reporter: Cheng Lian
For a query invoking the same function multiple times, the currentÂ
{{LookupFunctions}} rule performs a check for each invocation. For users using
Hive metastore as external catalog, this issues unnecessary metastore accesses
and can slow down the analysis phase quite a bit.
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