Re: Re: [COMMITTERS] pgsql: Add some isolation tests for deadlock detection and resolution.

On Thu, Feb 11, 2016 at 12:04 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I wrote:
>> No, because the machines that are failing are showing a "<waiting ...>"
>> annotation that your reference output *doesn't* have.  I think what is
>> actually happening is that these machines are seeing the process as
>> waiting and reporting it, whereas on your machine the backend detects
>> the deadlock and completes the query (with an error) before
>> isolationtester realizes that the process is waiting.
>
> I confirmed this theory by the expedient of changing the '10ms' setting
> in the test script to 1ms (which worked) and 100ms (which did not, on
> the same machine).
>
> I've committed an update that adjusts the timeouts to hopefully ensure
> that isolationtester always sees the query as blocked before the deadlock
> detector unblocks it; which seems like the behavior we want to test for,
> anyway.

Thanks.  I really appreciate it.

-- 
Robert Haas
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