Re: Hot standby and b-tree killed items

Simon Riggs <simon@2ndQuadrant.com> writes:

> The error message ought to be "snapshot too old", which could raise a
> chuckle, so I called it something else.
>
> The point you raise is a good one and I think we should publish a list
> of retryable error messages. I contemplated once proposing a special log
> level for a retryable error, but not quite a good idea.

I'm a bit concerned about the idea of killing off queries to allow WAL to
proceed. While I have nothing against that being an option I think we should
be aiming to make it not necessary for correctness and not the default. By
default I think WAL replay should stick to stalling WAL replay and only resort
to killing queries if the user specifically requests it.

--  Gregory Stark EnterpriseDB          http://www.enterprisedb.com Ask me about EnterpriseDB's On-Demand Production
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