Ian Barwick cce8b76171 "standby switchover": abort if promotion candidate has WAL replay paused ...

If replay is paused, we can't be really sure that more WAL will be received
between the check and the promote operation, which would risk the promote
operation not taking place during the switchover (it would happen
as soon as WAL replay is resumed and pending WAL is replayed).

Therefore we simply quit with an informative slew of messages and
leave the user to sort it out.

GitHub #540.

2019-02-05 16:32:39 +09:00

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