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help / color / mirror / Atom feedFrom: Amit Kapila <[email protected]>
To: Peter Geoghegan <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Robert Haas <[email protected]>
Subject: Re: Hash index bucket split bug
Date: Thu, 9 Jul 2026 16:15:17 +0530
Message-ID: <CAA4eK1+pd3T8ULEF6P-9AzpTCdWMG+ciWYopa+9xjj-urEwmRg@mail.gmail.com> (raw)
In-Reply-To: <CAH2-Wz=4CJK9ysZzbzxBGGTkgAg9ib8cJyCx=9q_d1r8tf0ang@mail.gmail.com>
References: <CAH2-Wz=4CJK9ysZzbzxBGGTkgAg9ib8cJyCx=9q_d1r8tf0ang@mail.gmail.com>
On Thu, Jul 9, 2026 at 2:10 AM Peter Geoghegan <[email protected]> wrote:
>
> Both tests are useful in their own way. The regression test runs
> quickly and so might be worth committing alongside the fix -- but it
> depends on leaving behind an incomplete split. The isolation test
> demonstrates that the bug doesn't hinge upon an incomplete split. The
> incomplete split case is particularly nasty, though, because the
> potential for wrong answers persists until an inserter completes the
> split.
>
I am getting following regression diff even after applying the patch:
-step s1_split: <... completed>
step s2_scan:
SELECT count(*) FROM hash_split_test
WHERE v = (SELECT k FROM hash_split_key);
@@ -68,3 +67,4 @@
11
(1 row)
I will review the code later.
--
With Regards,
Amit Kapila.
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To: [email protected]
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Subject: Re: Hash index bucket split bug
In-Reply-To: <CAA4eK1+pd3T8ULEF6P-9AzpTCdWMG+ciWYopa+9xjj-urEwmRg@mail.gmail.com>
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