[IMPALA-4718] query_test/test_aggregation fails on remote clusters with > 3 datanodes

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: Impala 2.7.0
• Component/s: Infrastructure
• Labels: correctness test-infra
• Assignee: David Knupp
• Reporter: David Knupp
• Created: 29/Dec/16 22:45
• Updated: 13/Aug/20 20:57
• Resolved: 13/Aug/20 20:57

Description

I've seen this error twice on 6 node remote clusters (1 master + 5 datanodes) of different platforms:

query_test/test_aggregation.py:134: in test_aggregation
    self.verify_agg_result(agg_func, data_type, False, result.data[0]);
query_test/test_aggregation.py:167: in verify_agg_result
    assert result_lut[key][:-ignore_digits] == actual_string[:-ignore_digits]
E   assert '2010-01-05 20:47:11.70508' == '2010-01-05 20:47:11.70510'
E     - 2010-01-05 20:47:11.70508
E     ?                         -
E     + 2010-01-05 20:47:11.70510
E     ?    

Is it really a product failure though? It seems like we might be asserting an unreasonable degree of precision – perhaps we just need to tweak our test verification expectations?

tarmstrong, I'm randomly assigning to you because you were the last one to touch verify_agg_result, where the assertion is defined. Please reassign as you see fit.