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

["Mykhailo Kysliuk (JIRA)" <ji...@apache.org>]

Mykhailo Kysliuk created HIVE-20351:
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             Summary: 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


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 not harmless because all results are correct. But named_struct constant values should be processed correctly.




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