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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-23486) LookupFunctions should not check the same function name more than once
Date Sun, 11 Mar 2018 07:05:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-23486?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-23486:
------------------------------------

    Assignee:     (was: 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
>            Priority: Major
>              Labels: starter
>
> For a query invoking the same function multiple times, the current {{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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