[jira] [Commented] (HIVE-20351) GenericUDFNamedStruct should constant fold at compile time

["Gopal V (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-20351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16575177#comment-16575177 ] 

Gopal V commented on HIVE-20351:
--------------------------------

For some reason, I left a comment about named_structs in the original commit.

{code}
           && oi instanceof StandardConstantStructObjectInspector) {
         // do not fold named_struct, only struct()
         ConstantObjectInspector coi = (ConstantObjectInspector) oi;
{code}

Can you try running this is in a query (i.e submit via Tez and see) - if I'm not wrong some bit in Kryo breaks.

> GenericUDFNamedStruct should constant fold at compile time
> ----------------------------------------------------------
>
>                 Key: HIVE-20351
>                 URL: https://issues.apache.org/jira/browse/HIVE-20351
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Mykhailo Kysliuk
>            Assignee: Mykhailo Kysliuk
>            Priority: Minor
>         Attachments: HIVE-20351.1.patch
>
>
> Reproduced at hive-3.0.
> When we run hive query:
> {code:java}
> select named_struct('Total','Total') from test;
> {code}
> We could see the ERROR at hiveserver logs:
> {code:java}
> 2018-05-25T15:18:13,182 ERROR [main] optimizer.ConstantPropagateProcFactory: Unable to evaluate org.apache.hadoop.hive.ql.udf.generic.GenericUDFNamedStruct@a0bf272. Return value unrecoginizable.
> {code}
> This error is harmless because all results are correct. But named_struct constant values should be processed correctly.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)