[HIVE-4812] Logical explain plan

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Diagnosability
• Assignee: Gunther Hagleitner
• Reporter: Gunther Hagleitner
• Created: 03/Jul/13 04:27
• Updated: 16/Dec/14 07:12
• Resolved: 09/Jul/13 00:44

Description

In various situations it would have been useful to me to glance at the operator plan before we break it into tasks and apply join, total order sort, etc optimizations.

I've added this as an options to explain. "Explain logical <QUERY>" will output the full operator tree (not the stage plans, tasks, AST etc).

Again, I don't think this has to even be documented for users, but might be useful to developers.

Issue Links

• blocks: HIVE-4660 Let there be Tez
• depends upon: HIVE-4811 (Slightly) break up the SemanticAnalyzer monstrosity