Hi,
Should the standby also have to follow the WAL rule during recovery?
The current patch doesn't care about the write order of the data page
and WAL in the standby. So, after both servers fail, restarting the
ex-standby by itself might corrupt the data.
If the standby follows the WAL rule, walreceiver might delay in
writing WAL records until the startup process' or bgwriter's fsync
have been finished. I'm a bit concerned that such delay might
increase the performance overhead on the primary.
Thought?
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center