[IMPALA-31] Support "explain <query>"

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 0.4
• Fix Version/s: Impala 1.0.1
• Assignee: Alan Choi
• Reporter: Alan Choi
• Created: 25/Jan/13 23:06
• Updated: 22/May/13 18:46
• Resolved: 22/May/13 18:46

Description

HiveServer2 does not have an "explain" API. Explain is executed as a statement: "explain select ...".
Impala should also accept "explain <query>" as a statement.