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Hive SQL( using TEZ as execution engine) not giving result on empty partition

By Dinesh

 

Hive SQL( using TEZ as execution engine) not giving incorrect, or not expected results on empty partitions.


We got this issue on Hive version: 3.1.0.3.1.5.0-152 ( HDP Version 3.1.5.0-152)


To replicate the issue - 

--Create external Table

1) Create external table test_tbl ( name string) partitioned by ( company string, processdate string) stored as orc location '/my/some/random/location';

 -- Add partion

2) Alter table test_tbl add partition ( company='aquaifer', processdate='20220101');

 

-- Execute following SQL's which returns no records.

3) select max( company ) , processdate  from test_tbl  group by processdate  ;

4) select max(processdate ) from test_tbl  ;

 


Same SQL (#3 & #4 above) , when execute with SPARK, returns  '0' count and  '20220101' respectively. 


So as a solution, we started using "spark-sql" instead of "hive/ beeline"


We didn't find a solution with hive for above inconsistency, and following bug has been raised for same HIVE-25838

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