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https://issues.apache.org/jira/browse/HIVE-20351?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16584001#comment-16584001
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Mykhailo Kysliuk commented on HIVE-20351:
-----------------------------------------
[~gopalv]
When we run query
{code}
select x, to_json(named_struct('Total', 1.0)), named_struct('Total', 1.0) from
test order by x;
{code}
We are getting the next error:
{code}
FAILED: SemanticException [Error 10014]: Line 1:10 Wrong arguments '1.0': Don't
know how to handle object inspector
org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableConstantHiveDecimalObjectInspector@35d4fecf
{code}
This happens at to_json function(with and without fix). If we put integer value
at parameters everything works fine.
Single named_struct UDF works fine with all of argument types. No errors at
logs anymore.
> 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, HIVE-20351.2.patch,
> HIVE-20351.3.patch, HIVE-20351.4.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.
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