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Posted to issues@spark.apache.org by "Cheng Lian (JIRA)" <ji...@apache.org> on 2018/02/22 01:19:00 UTC

[jira] [Updated] (SPARK-23486) LookupFunctions should not check the same function name more than once

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

Cheng Lian updated SPARK-23486:
-------------------------------
    Labels: starter  (was: )

> 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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