dima machlin created HIVE-7314:
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Summary: Wrong results of UDF when hive.cache.expr.evaluation is
set
Key: HIVE-7314
URL: https://issues.apache.org/jira/browse/HIVE-7314
Project: Hive
Issue Type: Bug
Affects Versions: 0.12.0
Reporter: dima machlin
It seems that the expression caching doesn't work when using UDF inside another
UDF or a hive function.
For example :
tbl has one row : 'a','b'
The following query :
select concat(custUDF(a),' ', custUDF(b)) from tbl;
returns 'a a'
seems to cache custUDF(a) and use it for custUDF(b).
Same query without the concat works fine.
Replacing the concat with another custom UDF also returns 'a a'
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