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

["Song Jun (JIRA)" <ji...@apache.org>]

Song Jun created SPARK-18271:
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             Summary: 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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