CODEWITHSUNDEEP
apache-sparkhadoophivehadoop-yarnapache-tez
dinesh028
dinesh028

Reputation: 2187

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

Hive SQL's on empty partitions giving no result instead of 0 rows or actual value. For example -

--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

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

– Execute following SQL's which returns no records.

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

  2. select max(processdate ) from test_tbl ;

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

Why is this behavior difference ? How can we have a table partition with 0 rows in Hive?

Upvotes: 0

Views: 235

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