From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
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To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
Cc: | Teodor Sigaev <teodor(at)sigaev(dot)ru>, Dmitry Ivanov <d(dot)ivanov(at)postgrespro(dot)ru>, Shubham Barai <shubhambaraiss(at)gmail(dot)com>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Andrew Borodin <amborodin86(at)gmail(dot)com>, Kevin Grittner <kgrittn(at)gmail(dot)com> |
Subject: | Re: [HACKERS] GSoC 2017: weekly progress reports (week 6) |
Date: | 2018-04-09 15:04:31 |
Message-ID: | 20180409150431.y2s347qzulgcawxg@alvherre.pgsql |
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Lists: | pgsql-hackers pgsql-www |
Heikki Linnakangas wrote:
> Remember, the purpose of predicate locks is to lock key ranges, not physical
> pages or tuples in the index. We use leaf pages as handy shortcut for "any
> key value that would belong on this page", but it is just an implementation
> detail.
Hmm ... so, thinking about pending list locking, would it work to
acquire locks on the posting tree's root of each item in the pending
list, when the item is put in the pending list? (even if we insert the
item in the pending list instead of its posting tree).
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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