On 5/25/17 19:16, Petr Jelinek wrote:
>> The reported error is just one of many errors that can happen when DROP
>> SUBSCRIPTION tries to drop the slot (doens't exist, still active, no
>> permission, etc.). We don't want to give the hint that is effectively
>> "just forget about the slot then" for all of them. So we would need
>> some way to distinguish "you can't do this right now" from "this would
>> never work" (400 vs 500 errors).
>>
> This specific error returns ERRCODE_UNDEFINED_OBJECT error code so we
> could check for it and offer hint only for this case.
We would have to extend the walreceiver interface a little to pass that
through, but it seems doable.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
