| From: | wangchuanting <wangchuanting(at)huawei(dot)com> |
|---|---|
| To: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: BUG #14680: startup process on standby encounter a deadlock of TwoPhaseStateLock when redo 2PC xlog |
| Date: | 2017-06-02 01:59:32 |
| Message-ID: | 1496368772770-5964407.post@n3.nabble.com |
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| Lists: | pgsql-bugs pgsql-hackers |
Hi Michael,
appreciate for your quick response.
i look carefully on the patch, because of we removed TwoPhaseStateLock
lwlock acquire in `RemoveGXact' and let caller held lwlock, so i think:
1. xact_redo also need held lwlock before call PrepareRedoRemove
2. RecoverPreparedTransactions also need held lwlock before call
ProcessTwoPhaseBuffer
--
View this message in context: http://www.postgresql-archive.org/BUG-14680-startup-process-on-standby-encounter-a-deadlock-of-TwoPhaseStateLock-when-redo-2PC-xlog-tp5964069p5964407.html
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