[PIG-3355] ColumnMapKeyPrune bug with distinct operator

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.2, 0.10.1, 0.11.1
• Fix Version/s: 0.12.0
• Assignee: Jeremy Karn
• Reporter: Jeremy Karn
• Created: 14/Jun/13 19:16
• Updated: 14/Oct/13 16:46
• Resolved: 18/Jun/13 17:38

Description

We came across a bug that happens when you have a distinct operator immediately followed by a union where the result of the union has at least one column that will be pruned by ColumnMapKeyPrune. There's a test showing an example script in the submitted patch.