[HIVE-24384] SharedWorkOptimizer improvements

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Zoltan Haindrich
• Reporter: Zoltan Haindrich
• Created: 13/Nov/20 10:21
• Updated: 13/Nov/20 10:21

Description

this started as a small feature addition but due to the sheer volume of the q.out changes - its better to do smaller changes at a time; which means more tickets...

Sub-Tasks

• Relax safety checks in SharedWorkOptimizer: Open
• Organize replaceTabAlias methods: Open
• In SharedWorkOptimizer run simplification after merging TS filter expressions: Open
• SharedWorkOptimizer may retain the SJ filter condition during RemoveSemijoin mode: Open