[HIVE-22197] Common Merge join throwing class cast exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Hive
• Target Version/s: 4.0.0
• Assignee: mahesh kumar behera
• Reporter: mahesh kumar behera
• Created: 12/Sep/19 03:59
• Updated: 17/Nov/22 08:50
• Resolved: 27/Sep/19 06:09

Description

In DummyStoreOperator the row is cached to fix HIVE-5973. The row is copyed and stored in the writable format, but the object inspector is initialized to default. So when join operator is fetching the data from dummy store operator, its getting the OI is Long and the row as LongWritable. This is causing the class cast exception.