Postgres Pro
Downloads
Home   >   mailing lists

RE: In-placre persistance change of a relation - Mailing list pgsql-hackers

From osumi.takamichi@fujitsu.com
Subject RE: In-placre persistance change of a relation
Date
Msg-id OSBPR01MB48880392945A391332DDB65CEDE60@OSBPR01MB4888.jpnprd01.prod.outlook.com
Whole thread Raw
In response to RE: In-placre persistance change of a relation  ("tsunakawa.takay@fujitsu.com" <tsunakawa.takay@fujitsu.com>)
Responses Re: In-placre persistance change of a relation  (Kyotaro Horiguchi <horikyota.ntt@gmail.com>)
List pgsql-hackers
Tree view 
Hello, Tsunakawa-San


> Do you know the reason why data copy was done before?  And, it may be
> odd for me to ask this, but I think I saw someone referred to the past
> discussion that eliminating data copy is difficult due to some processing at
> commit.  I can't find it.
I can share 2 sources why to eliminate the data copy is difficult in hackers thread.

Tom's remark and the context to copy relation's data.
https://www.postgresql.org/message-id/flat/31724.1394163360%40sss.pgh.pa.us#31724.1394163360@sss.pgh.pa.us

Amit-San quoted this thread and mentioned that point in another thread.
https://www.postgresql.org/message-id/CAA4eK1%2BHDqS%2B1fhs5Jf9o4ZujQT%3DXBZ6sU0kOuEh2hqQAC%2Bt%3Dw%40mail.gmail.com

Best,
    Takamichi Osumi

pgsql-hackers by date:

Previous
From: Amit Kapila
Date:
Subject: Re: POC: Cleaning up orphaned files using undo logs
Next
From: Peter Eisentraut
Date:
Subject: Re: [PATCH] remove deprecated v8.2 containment operators