Might be related to: https://issues.apache.org/jira/browse/HIVE-10929
Thanks, -Vaibhav From: Gufran Mohammed Pathan <gufran.path...@mu-sigma.com<mailto:gufran.path...@mu-sigma.com>> Reply-To: "user@hive.apache.org<mailto:user@hive.apache.org>" <user@hive.apache.org<mailto:user@hive.apache.org>> Date: Wednesday, June 10, 2015 at 10:18 AM To: "user@hive.apache.org<mailto:user@hive.apache.org>" <user@hive.apache.org<mailto:user@hive.apache.org>> Subject: Empty Table in MR with "union all" (created in Tez) Hi, I'm unable to retrieve rows from a table created in Tez when using MR as execution engine. This happens only when the create table statement has "union all". Here's a way to reproduce the issue: set hive.execution.engine=tez; create table test_table as select "1" from table1 union all select "1" from table2 ; select * from test_table; --gives correct roles set hive.execution.engine=mr; select * from test_table; --gives empty table Any ideas on why this must be happening? This issue does not occur when I don't use a "union all" query. I'm using HDP 2.2 with Hive 0.14 and Tez 0.4.0.2. Thanks, Gufran Pathan| +91 7760913355|www.mu-sigma.com<http://www.mu-sigma.com/>| Correlation does not imply causation, but it does waggle its eyebrows suggestively and gesture furtively while mouthing "look over there." -Randall Munroe Disclaimer: http://www.mu-sigma.com/disclaimer.html
