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https://issues.apache.org/jira/browse/IMPALA-7736?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Brown resolved IMPALA-7736.
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Resolution: Won't Fix
For me this happens when you run concurrent_select.py from master against a
pre-3.0 Impala. I think it should be fine to expect people to run earlier
versions of the stress test on pre-3.0 Impala clusters. People will have to
start doing that anyway now that we include queries with multiple DISTINCT
aggregations.
> stress: AssertionError: The number of executing queries is negative
> -------------------------------------------------------------------
>
> Key: IMPALA-7736
> URL: https://issues.apache.org/jira/browse/IMPALA-7736
> Project: IMPALA
> Issue Type: Bug
> Components: Infrastructure
> Affects Versions: Impala 3.1.0
> Reporter: Michael Brown
> Assignee: Michael Brown
> Priority: Critical
> Labels: stress
>
> I'd heard about this anecdotally but haven't seen it until now:
> {noformat}
> Done | Active | Executing | Mem Lmt Ex | AC Reject | AC Timeout | Time Out |
> Cancel | Err | Incorrect | Next Qry Mem Lmt | Tot Qry Mem Lmt | Tracked Mem |
> RSS Mem
> 263 | 6 | 3 | 20 | 0 | 0 | 0 |
> 17 | 0 | 0 | 9818 | 26802 | 15656 |
> 19329
> 263 | 6 | 3 | 20 | 0 | 0 | 0 |
> 17 | 0 | 0 | 9818 | 26802 | 15534 |
> 19341
> 263 | 6 | 3 | 20 | 0 | 0 | 0 |
> 17 | 0 | 0 | 9818 | 26802 | 15462 |
> 19190
> 265 | 4 | 1 | 20 | 0 | 0 | 0 |
> 17 | 0 | 0 | 9818 | 22938 | 15482 |
> 19565
> Traceback (most recent call last):
> File "tests/stress/concurrent_select.py", line 2320, in <module>
> main()
> File "tests/stress/concurrent_select.py", line 2316, in main
> select_probability=args.select_probability)
> File "tests/stress/concurrent_select.py", line 529, in run_queries
> self._wait_for_test_to_finish(impala, should_print_status)
> File "tests/stress/concurrent_select.py", line 943, in
> _wait_for_test_to_finish
> self._print_status(print_header=(lines_printed == 0))
> File "tests/stress/concurrent_select.py", line 837, in _print_status
> self._num_queries_executing,
> File "tests/stress/concurrent_select.py", line 690, in
> _num_queries_executing
> assert num_executing >= 0, "The number of executing queries is negative"
> AssertionError: The number of executing queries is negative
> {noformat}
> I've run many thousand-query stress test runs against 3.1 without hitting
> this. Where this finally happened was against a 2.12-based build, if that
> matters.
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