Jason Dere commented on HIVE-13903:

Hi [~prongs], just trying to get a little background on this one - was the JAR 
being downloaded once per session, or was it getting downloaded every time the 
UDF was being used, even in the same session?

> getFunctionInfo is downloading jar on every call
> ------------------------------------------------
>                 Key: HIVE-13903
>                 URL: https://issues.apache.org/jira/browse/HIVE-13903
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Rajat Khandelwal
>            Assignee: Rajat Khandelwal
>             Fix For: 2.1.0
>         Attachments: HIVE-13903.01.patch, HIVE-13903.01.patch, 
> HIVE-13903.02.patch
> on queries using permanent udfs, the jar file of the udf is downloaded 
> multiple times. Each call originating from Registry.getFunctionInfo. This 
> increases time for the query, especially if that query is just an explain 
> query. The jar should be downloaded once, and not downloaded again if the udf 
> class is accessible in the current thread. 

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