Re: [HACKERS] logical replication deranged sender

On 08/05/17 13:47, Petr Jelinek wrote:
> On 08/05/17 01:17, Jeff Janes wrote:
>> After dropping a subscription, it says it succeeded and that it dropped
>> the slot on the publisher.
>>
>> But the publisher still has the slot, and a full-tilt process described
>> by ps as
>>
>> postgres: wal sender process jjanes [local] idle in transaction
>>
>> Strace shows that this process is doing nothing but opening, reading,
>> lseek, and closing from pg_wal, and calling sbrk.  It never sends anything.
>>
>> This is not how it should work, correct?
>>
>
> No, and I don't see how this happens though, we only report success if
> the publisher side said that DROP_REPLICATION_SLOT succeeded. So far I
> don't see anything in source that would explain this. I will need to
> reproduce it first to see what's happening (wasn't able to do that yet,
> but it might just need more time since you say it does no happen always).
>

Hm I wonder are there any workers left on subscriber when this happens?