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https://issues.apache.org/jira/browse/HIVE-508?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Sichi resolved HIVE-508.
-----------------------------
Resolution: Cannot Reproduce
Not sure where along the line this got fixed, but these days the error message
is reasonable:
{noformat}
FAILED: Error in semantic analysis: Line 1:7 Wrong arguments 'a': No matching
method for class org.apache.hadoop.hive.ql.udf.UDFRound with
(map<string,string>). Possible choices: _FUNC_(double) _FUNC_(double, int)
{noformat}
> Better error message for UDF parameter handling
> -----------------------------------------------
>
> Key: HIVE-508
> URL: https://issues.apache.org/jira/browse/HIVE-508
> Project: Hive
> Issue Type: Bug
> Components: Diagnosability, UDF
> Reporter: Zheng Shao
>
> {code}
> CREATE TABLE x (a map<string,string>);
> SELECT round(a) FROM x;
> {code}
> This will show an error message:
> FAILED: Unknown exception :
> org.apache.hadoop.hive.serde2.typeinfo.MapTypeInfo cannot be cast to
> org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo
> We need better error messsage like:
> FAILED: Unable to pass a (type: map<string,string>) to function round.
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