From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
Subject: | pgsql: Fix issues in pgarch's new directory-scanning logic. |
Date: | 2021-12-29 22:02:56 |
Message-ID: | E1n2h28-0002Re-5r@gemulon.postgresql.org |
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Thread: | |
Lists: | pgsql-committers |
Fix issues in pgarch's new directory-scanning logic.
The arch_filenames[] array elements were one byte too small, so that
a maximum-length filename would get corrupted if another entry
were made after it. (Noted by Thomas Munro, fix by Nathan Bossart.)
Move these arrays into a palloc'd struct, so that we aren't wasting
a few kilobytes of static data in each non-archiver process.
Add a binaryheap_reset() call to make it plain that we start the
directory scan with an empty heap. I don't think there's any live
bug of that sort, but it seems fragile, and this is very cheap
insurance.
Cleanup for commit beb4e9ba1, so no back-patch needed.
Discussion: https://postgr.es/m/CA+hUKGLHAjHuKuwtzsW7uMJF4BVPcQRL-UMZG_HM-g0y7yLkUg@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/1fb17b1903414676bd371068739549cd2966fe87
Modified Files
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src/backend/postmaster/pgarch.c | 70 +++++++++++++++++++++++++----------------
1 file changed, 43 insertions(+), 27 deletions(-)
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