[HIVE-13126] Clean up MapJoinOperator properly to avoid object cache reuse with unintentional states

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.1, 2.1.0
• Component/s: Hive
• Target Version/s: 2.0.1
• Assignee: Wei Zheng
• Reporter: Wei Zheng
• Created: 23/Feb/16 19:03
• Updated: 21/Jun/16 15:44
• Resolved: 24/Feb/16 18:06

Description

For a given job, one task may reuse other task's object cache (plan cache) such as MapJoinOperator. This is fine. But if we have some dirty states left over, it may cause issue like wrong results.