Re: POC: Cleaning up orphaned files using undo logs

On Tue, Jul 30, 2019 at 5:26 PM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> Hi Amit
>
> I've been testing some undo worker workloads (more on that soon),
>

One small point, there is one small bug in the error queues which is
that the element pushed into error queue doesn't have an updated value
of to_urec_ptr which is important to construct the hash key.  This
will lead to undolauncher/worker think that the action for the same is
already processed and it removes the same from the hash table. I have
a fix for the same which I will share in next version of the patch
(which I am going to share in the next day or two).

>  but
> here's a small thing: I managed to reach an LWLock self-deadlock in
> the undo worker launcher:
>

I could see the problem, will fix in next version.

Thank you for reviewing and testing this.

-- 
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com