Re: Add SKIP LOCKED to VACUUM and ANALYZE

On 10/1/18, 7:07 PM, "Michael Paquier" <michael@paquier.xyz> wrote:
> On Mon, Oct 01, 2018 at 03:37:01PM +0000, Bossart, Nathan wrote:
>> Without the find_all_inheritors() stuff, I think we would just need to
>> modify the ANALYZE documentation patch to say something like
>> 
>>     Specifies that ANALYZE should not wait for any conflicting locks
>>     to be released: if a relation cannot be locked immediately without
>>     waiting, the relation is skipped.  Note that even with this
>>     option, ANALYZE can still block when opening the relation's
>>     indexes or when acquiring sample rows to prepare the statistics.
>>     Also, while ANALYZE ordinarily processes all leaf partitions of
>>     partitioned tables, this option will cause ANALYZE to skip all
>>     leaf partitions if there is a conflicting lock on the partitioned
>>     table.
>
> Yes, I think that we could live with something like that.  I could give
> this whole thing a shot, but this will have to wait until the commit
> fest is closed as there are still many patches to classify.  If you can
> send a patch that's of course always helpful..

Sure, here it is.

Nathan