Re: [PATCH] Btree BackwardScan race condition on Standby during VACUUM

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От Michail Nikolaev
Тема Re: [PATCH] Btree BackwardScan race condition on Standby during VACUUM
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Msg-id CANtu0ojCsZHfSXGsJY6AF_pHwrD01tUa_mQnsnBcnY5ztkYq3Q@mail.gmail.com
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Ответ на Re: [PATCH] Btree BackwardScan race condition on Standby duringVACUUM  ("Andrey M. Borodin" <x4mmm@yandex-team.ru>)
Ответы Re: [PATCH] Btree BackwardScan race condition on Standby during VACUUM  (Peter Geoghegan <pg@bowt.ie>)
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Hello.

>  Probably, patch in this thread should fix this in btree_xlog_split() too?

I have spent some time trying to find any possible race condition
between btree_xlog_split and _bt_walk_left… But I can’t find any.
Also, I have tried to cause any issue by putting pg_sleep put into
btree_xlog_split (between releasing and taking of locks) but without
any luck.

I agree it is better to keep the same locking logic for primary and
standby in general. But it is a possible scope of another patch.

Thanks,
Michail.

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