Re: Parallel bitmap index scan

On 11/11/20 8:52 PM, Tomas Vondra wrote:
> Hi,
>
> I took a look at this today, doing a bit of stress-testing, and I can
> get it to crash because of segfaults in pagetable_create (not sure if
> the issue is there, it might be just a symptom of an issue elsewhere).
>
> Attached is a shell script I use to run the stress test - it's using
> 'test' database, generates tables of different size and then runs
> queries with various parameter combinations. It takes a while to trigger
> the crash, so it might depend on timing or something like that.
>
> I've also attached two examples of backtraces. I've also seen infinite
> loop in pagetable_create, but the crashes are much more common.
>

Hi Dilip,

Do you plan to work on this for PG14? I haven't noticed any response in
this thread, dealing with the crashes I reported a while ago. Also, it
doesn't seem to be added to any of the commitfests.

regards

--
Tomas Vondra
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