Horton

Re: Assertion failure with barriers in parallel hash join

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: Postgres hackers <pgsql-hackers@lists.postgresql.org>
Date: 2020-09-29T08:12:13Z
Lists: pgsql-hackers 
On Tue, Sep 29, 2020 at 7:11 PM Michael Paquier <michael@paquier.xyz> wrote:
> #2  0x00000000009027d2 in ExceptionalCondition
> (conditionName=conditionName@entry=0xa80846 "!barrier->static_party",

> #4  0x0000000000682ebf in ExecParallelHashJoinNewBatch

Thanks.  Ohhh.  I think I see how that condition was reached and what
to do about it, but I'll need to look more closely.  I'm away on
vacation right now, and will update in a couple of days when I'm back
at a real computer.

Commits

  1. Fix race in parallel hash join batch cleanup, take II.

  2. Revert "Fix race in Parallel Hash Join batch cleanup."

  3. Fix race in Parallel Hash Join batch cleanup.

  4. Mop-up for wait event naming issues.