[IMPALA-4867] Sometimes set num_nodes=1 in random query generator

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: Impala 2.9.0
• Component/s: Infrastructure
• Labels: query_generator_development
• Target Version: Product Backlog
• Assignee: Unassigned
• Reporter: Tim Armstrong
• Created: 02/Feb/17 00:36
• Updated: 28/Sep/17 19:50

Description

I just found a correctness issue - IMPALA-4866 - that the random query generator would have found very quickly if it set num_nodes=1 and added limits to join queries.

It would be good if we added that query option to the search space.