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Posted to issues@spark.apache.org by "Michael Armbrust (JIRA)" <ji...@apache.org> on 2015/09/15 23:01:45 UTC
[jira] [Resolved] (SPARK-4093) Simplify the unwrap/wrap between
HiveUDFs
[ https://issues.apache.org/jira/browse/SPARK-4093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Armbrust resolved SPARK-4093.
-------------------------------------
Resolution: Won't Fix
As we implement more functions natively this is no longer an important issue.
> Simplify the unwrap/wrap between HiveUDFs
> -----------------------------------------
>
> Key: SPARK-4093
> URL: https://issues.apache.org/jira/browse/SPARK-4093
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Cheng Hao
> Priority: Minor
>
> Currently, the nested Hive UDFs invoking will cause extra overhead in "unwrapping" / "wrapping" data.
> e.g.
> SELECT cos(sin(a)) FROM t;
> We can reuse the ObjectInspector & output result of nested Hive UDF(sin), and avoid the extra data "unwrap" and "wrap".
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