Affects Version/s: 0.12.0, 0.13.0, 0.13.1
Fix Version/s: 0.14.0
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 :
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'