[HIVE-21687] LLAP: LlapBaseInputFormat.getSplits(..., 0) should use LIMIT 0 query

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Gopal Vijayaraghavan
• Created: 03/May/19 06:03
• Updated: 03/May/19 06:03

Description

The 0 split query is useful in ensuring that the user has access to the tables and getting the result schema.

There's a fast-path for Tableau for "LIMIT 0" queries which can be used for this without touching the get_splits UDTF.