Horton

Re: Query generates infinite loop

Corey Huinker <corey.huinker@gmail.com>

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From: Corey Huinker <corey.huinker@gmail.com>
To: Jeff Janes <jeff.janes@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Date: 2022-05-09T03:44:33Z
Lists: pgsql-bugs, pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Revert "Disallow infinite endpoints in generate_series() for timestamps."

  2. Disallow infinite endpoints in generate_series() for timestamps.

On Wed, May 4, 2022 at 3:01 PM Jeff Janes <jeff.janes@gmail.com> wrote:

> On Wed, Apr 20, 2022 at 5:43 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
>> I wrote:
>> > it's true that infinities as generate_series endpoints are going
>> > to work pretty oddly, so I agree with the idea of forbidding 'em.
>>
>> > Numeric has infinity as of late, so the numeric variant would
>> > need to do this too.
>>
>> Oh --- looks like numeric generate_series() already throws error for
>> this, so we should just make the timestamp variants do the same.
>>
>
> The regression test you added for this change causes an infinite loop when
> run against an unpatched server with --install-check.  That is a bit
> unpleasant.  Is there something we can and should do about that?  I was
> expecting regression test failures of course but not an infinite loop
> leading towards disk exhaustion.
>
> Cheers,
>
> Jeff
>

This came up once before
https://www.postgresql.org/message-id/CAB7nPqQUuUh_W3s55eSiMnt901Ud3meF7f_96yPkKcqfd1ZaMg%40mail.gmail.com