Re: BUG #15182: Canceling authentication due to timeout aka Denialof Service Attack

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От Michael Paquier
Тема Re: BUG #15182: Canceling authentication due to timeout aka Denialof Service Attack
Дата
Msg-id 20180728001012.GC1882@paquier.xyz
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Ответ на Re: BUG #15182: Canceling authentication due to timeout aka Denial ofService Attack  ("Bossart, Nathan" <bossartn@amazon.com>)
Ответы Re: BUG #15182: Canceling authentication due to timeout aka Denial ofService Attack  ("Bossart, Nathan" <bossartn@amazon.com>)
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On Fri, Jul 27, 2018 at 02:40:42PM +0000, Bossart, Nathan wrote:
> On 7/26/18, 11:16 PM, "Michael Paquier" <michael@paquier.xyz> wrote:
> I think I'm essentially suggesting what you have in 0002 but without
> the new RangeVarGetRelidExtended() callback.  I've attached a modified
> version of 0002 that seems to fix the originally reported issue.  (I
> haven't looked into any extra handling needed for ANALYZE or
> partitioned tables.)  Running the same checks for all VACUUMs would
> keep things simple and provide a more uniform user experience.

Okay, let me check that.  Your patch has at least an error in
get_all_vacuum_rels() where toast relations cannot be skipped.

>> The docs mentioned that shared catalogs are processed, so I did not
>> bother, but visibly your comment is that we could be more precise about
>> the ownership in this case?  An attempt is attached.
>
> Sorry, I should have been clearer.  But yes, your update is what I was
> thinking.

No problem.  If there are no objections, I am going to fix the REINDEX
issue first and back-patch.  Its patch is the least invasive of the
set.
--
Michael

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