Re: Why is a newly created index contains the invalid LSN?

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Yury Zhuravlev <u(dot)zhuravlev(at)postgrespro(dot)ru>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Why is a newly created index contains the invalid LSN?
Date: 2016-08-25 17:13:06
Message-ID: CA+TgmoaWyw8vFxcA3dO3aZxjviRaZRLGbVUciGwup7ZOUoLPCg@mail.gmail.com
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On Thu, Aug 25, 2016 at 10:25 AM, Yury Zhuravlev
<u(dot)zhuravlev(at)postgrespro(dot)ru> wrote:
> I have a small question. While working on an incremental backup I noticed a
> strange thing.
> Newly created index is contains the invalid LSN (0/0).
> Exmaple:
> postgres=# select lsn from page_header(get_raw_page('test_a_idx2',0));
> lsn -----
> 0/0
> (1 row)
>
> Can you explain me why?

Why not?

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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