Hive multi group by single reducer optimization fails when aggregation with no
keys followed by query with no aggregations
--------------------------------------------------------------------------------------------------------------------------
Key: HIVE-2812
URL: https://issues.apache.org/jira/browse/HIVE-2812
Project: Hive
Issue Type: Bug
Affects Versions: 0.9.0
Reporter: Kevin Wilfong
Assignee: Kevin Wilfong
In multi insert queries where one subquery involves an aggregation with no
distinct or group by keys and is followed by a query without any aggregations,
like the following, Hive will attempt to add a group by operator for the query
without aggregations, causing semantic analysis to fail.
FROM src
INSERT OVERWRITE TABLE table1 SELECT count(*)
INSERT OVERWRITE TABLE table2 SELECT key;
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
