[HIVE-4935] Potential NPE in MetadataOnlyOptimizer

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Assignee: Yin Huai
• Reporter: Yin Huai
• Created: 25/Jul/13 18:06
• Updated: 15/Oct/13 23:30
• Resolved: 26/Jul/13 15:06

Description

In MetadataOnlyOptimizer.TableScanProcessor.process, it is possible that we consider a TableScanOperator as "MayBeMetadataOnly" when this TS does not have a conf. In MetadataOnlyOptimizer.MetadataOnlyTaskDispatcher.dispatch(Node, Stack<Node>, Object...), when we convert this TS, we want to get the alias from its conf....