Old .deleted file in pg_wal

From: Guy Burgess <guy(at)burgess(dot)co(dot)nz>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Old .deleted file in pg_wal
Date: 2021-02-26 20:48:47
Message-ID: f9787626-3ac0-627a-064a-3d90949e454f@burgess.co.nz
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Hello,

There is a file in my pg_wal directory called
"000000010000003B000000D0.deleted", last modified in December 2020, and
has survived PG & server restarts.  I've been having some errors with
WAL files
(https://www.postgresql.org/message-id/flat/095ccf8d-7f58-d928-427c-b17ace23cae6%40burgess.co.nz)
and would like to tidy this file if safe to do so.

I think this is where the file gets created:
https://github.com/postgres/postgres/blob/ca3b37487be333a1d241dab1bbdd17a211a88f43/src/backend/access/transam/xlogarchive.c#L406

Based on that I'm pretty sure it is OK to delete a ".deleted" WAL file,
but thought I would check in case anyone suggests otherwise.

Thanks

Guy

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