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help / color / mirror / Atom feedFrom: Kyotaro Horiguchi <[email protected]>
To: [email protected]
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Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Subject: Re: In-placre persistance change of a relation
Date: Fri, 25 Dec 2020 09:12:52 +0900 (JST)
Message-ID: <[email protected]> (raw)
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<[email protected]>
Hello.
At Thu, 24 Dec 2020 17:02:20 +0900 (JST), Kyotaro Horiguchi <[email protected]> wrote in
> The patch is attached to the next message.
The reason for separating this message is that I modified this so that
it could solve another issue.
There's a complain about orphan files after crash. [1]
1: https://www.postgresql.org/message-id/[email protected]
That is, the case where a relation file is left alone after a server
crash that happened before the end of the transaction that has created
a relation. As I read this, I noticed this feature can solve the
issue with a small change.
This version gets changes in RelationCreateStorage and
smgrDoPendingDeletes.
Previously inittmp fork is created only along with an init fork. This
version creates one always when a relation storage file is created. As
the result ResetUnloggedRelationsInDbspaceDir removes all forks if the
inttmp fork of a logged relations is found. Now that pendingDeletes
can contain multiple entries for the same relation, it has been
modified not to close the same smgr multiple times.
- It might be better to split 0001 into two peaces.
- The function name ResetUnloggedRelationsInDbspaceDir is no longer
represents the function correctly.
regards.
--
Kyotaro Horiguchi
NTT Open Source Software Center
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Subject: Re: In-placre persistance change of a relation
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