| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Get stuck when dropping a subscription during synchronizing table |
| Date: | 2017-05-11 07:06:15 |
| Message-ID: | CAB7nPqQ2vtbLswMTmCJyC-SAWAa4y=HpSG7VQUBHPu5wxW-sfA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, May 10, 2017 at 11:57 AM, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> Barring any objections, I'll add these two issues to open item.
It seems to me that those open items have not been added yet to the
list. If I am following correctly, they could be defined as follows:
- Dropping subscription may stuck if done during tablesync.
-- Analyze deadlock issues with DROP SUBSCRIPTION and apply worker process.
-- Avoid orphaned tablesync worker if apply worker exits before
changing its status.
I am playing with the code to look at both of them... But feel free to
update this thread if I don't show up. There are no test cases, but
some well-placed pg_usleep calls should make both issues easily
reproducible. I have the gut feeling that other things are hidden
behind though.
--
Michael
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