Robert Haas wrote:
> Is it reasonable to think that we can find a way to make it not print
> the duplicate messages over and over again?
> 
> LOG:  record with zero length at 0/3006B28
> 
> Maybe only print that if the location has advanced since the last such 
> message?

Yeah, seems reasonable.

> Should we make it shut down if it can't immediately read enough WAL to
> get to a consistent state, or just figure it's the user's job to fix
> it?

I'd say no. In testing, I have done this many times:

pg_start_backup()
copy data directory to server
create recovery.conf
Start standby server.
pg_stop_backup()

The standby doesn't reach consistency before it sees the end-of-backup
record written by pg_stop_backup(), but it does replay up to the last
WAL segment, and connect to the master.

Not sure if that's useful in real life, but there could be situations
where restore_command isn't totally reliable, for example, and it's good
to keep trying.

-- 
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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