[jira] [Commented] (SPARK-18271) hash udf in HiveSessionCatalog.hiveFunctions seq is redundant

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15636120#comment-15636120 ] 

Apache Spark commented on SPARK-18271:
--------------------------------------

User 'windpiger' has created a pull request for this issue:
https://github.com/apache/spark/pull/15766

> hash udf in HiveSessionCatalog.hiveFunctions seq is redundant
> -------------------------------------------------------------
>
>                 Key: SPARK-18271
>                 URL: https://issues.apache.org/jira/browse/SPARK-18271
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.1
>            Reporter: Song Jun
>            Priority: Minor
>
> when lookupfunction in HiveSessionCatalog, first look up in spark's build-in functionRegistry, if it not existed, then look up the Hive'S build-in functions which are listed in Seq(hiveFunctions).
> But the [hash] function is already in spark's build-in functionRegistry list, so it will never to go to look up in Hive's hiveFunctions list, so the [hash] function which is in Hive's hiveFunctions is redundant, we can remove it.



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