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Re: Assertion failure with barriers in parallel hash join - Mailing list pgsql-hackers

From Melanie Plageman
Subject Re: Assertion failure with barriers in parallel hash join
Date
Msg-id CAAKRu_ZSdynXbzR=5Nb5kQ3QdsUBs0=Cp6a4YxUkbMrX9mmR_g@mail.gmail.com
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In response to Assertion failure with barriers in parallel hash join  (Michael Paquier <michael@paquier.xyz>)
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On Wed, Mar 17, 2021 at 8:18 AM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Wed, Mar 17, 2021 at 6:58 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > According to BF animal elver there is something wrong with this
> > commit.  Looking into it.
>
> Assertion failure reproduced here and understood, but unfortunately
> it'll take some more time to fix this.  I've reverted the commit for
> now to unbreak the ~5 machines that are currently showing red in the
> build farm.

Also, silly question: why couldn't we just set the pstate->batches pointer to
InvalidDsaPointer before doing dsa_free() (of course saving the pointer
so that we can actually do the freeing with it)? Is there still a race?

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