Re: Poorly thought out code in vacuum

On Fri, Jan 6, 2012 at 12:34 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> On Fri, Jan 6, 2012 at 12:24 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>>> So at this point I've got serious doubts as to the quality of testing of
>>> that whole patch, not just this part.
>
>> I tested the case where we skip a block during the first pass, but I
>> admit that I punted on testing the case where we skip a block during
>> the second pass, because I couldn't think of a good way to exercise
>> it.  Any suggestions?
>
> Hack ConditionalLockBufferForCleanup to have a 50% probability of
> failure regardless of anything else, for instance via
>
>        static int ctr = 0;
>
>        if ((++ctr) % 2)
>                return false;

Oh, that's brilliant. OK, I'll go try that.

Note to self: Try to remember to take that hack back out before committing.

--
Robert Haas
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