Re: warning message in standby

Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> On Mon, Jun 7, 2010 at 9:21 AM, Fujii Masao <masao(dot)fujii(at)gmail(dot)com> wrote:
>> When an error is found in the WAL streamed from the master, a warning
>> message is repeated without interval forever in the standby. This
>> consumes CPU load very much, and would interfere with read-only queries.
>> To fix this problem, we should add a sleep into emode_for_corrupt_record()
>> or somewhere? Or we should stop walreceiver and retry to read WAL from
>> pg_xlog or the archive?

> I ran into this problem at one point, too, but was in the middle of
> trying to investigate a different bug and didn't have time to track
> down what was causing it.

> I think the basic question here is - if there's an error in the WAL,
> how do we expect to EVER recover? Even if we can read from the
> archive or pg_xlog, presumably it's the same WAL - why should we be
> any more successful the second time?

What "warning message" are we talking about? All the error cases I can
think of in WAL-application are ERROR, or likely even PANIC.

regards, tom lane