[HIVE-4342] NPE for query involving UNION ALL with nested JOIN and UNION ALL

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.9.0
• Fix Version/s: 0.11.0
• Component/s: Logging, Metastore, Query Processor

Environment

Red Hat Linux VM with Hive 0.9 and Hadoop 2.0

• Hadoop Flags: Reviewed
• Assignee: wuzhenhua
• Reporter: Mihir Kulkarni
• Created: 12/Apr/13 00:20
• Updated: 02/Apr/22 06:29
• Resolved: 21/Apr/13 16:06

Description

UNION ALL query with JOIN in first part and another UNION ALL in second part gives NPE.

JOIN

UNION ALL

UNION ALL

Attachments:
1. HiveCommands.txt : command script to setup schema for query under consideration.
2. sourceData1.txt and sourceData2.txt : required for above command script.
3. Query.txt : Exact query which produces NPE.

NOTE: you will need to update path to sourceData1.txt and sourceData2.txt in the HiveCommands.txt to suit your environment.

Attached files contain the schema and exact query which fails on Hive 0.9.
It is worthwhile to note that the same query executes successfully on Hive 0.7.