Affects Version/s: Impala 2.8.0, Impala 2.9.0, Impala 2.10.0, Impala 2.11.0, Impala 3.0, Impala 2.12.0
Fix Version/s: None
If we have multiple cast of '' to varchar statements in a impala query which has a distinct like below, the query breaks for scenario when the cast to varchar limit in the SQL is lower than the previous cast.
Query 1> Fails with " AnalysisException: null CAUSED BY: IllegalArgumentException: targetType=VARCHAR(100) type=VARCHAR(101)"
SELECT DISTINCT CAST('' as VARCHAR(101)) as CL_COMMENTS,CAST('' as VARCHAR(100)) as CL_USER_ID FROM tablename limit 1
Where as the below query succeeds
Query 2> Success
SELECT DISTINCT CAST('' as VARCHAR(100)) as CL_COMMENTS,CAST('' as VARCHAR(101)) as CL_USER_ID FROM tablename limit 1