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https://issues.apache.org/jira/browse/SPARK-23486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-23486:
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Assignee: Apache Spark
> 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
> Assignee: Apache Spark
> Priority: Major
> Labels: starter
>
> 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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