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help / color / mirror / Atom feedFrom: Amit Langote <[email protected]>
To: Tom Lane <[email protected]>
Cc: Tomas Vondra <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Alvaro Herrera <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Daniel Gustafsson <[email protected]>
Cc: David Rowley <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Thom Brown <[email protected]>
Subject: Re: generic plans and "initial" pruning
Date: Thu, 5 Dec 2024 11:14:12 +0900
Message-ID: <CA+HiwqEwDVn_Y_K-ZP2928MUN+hdW_cxw48a_2ZWNaWZiB667w@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
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<CA+HiwqHRRFQN6yZ54fBydOTM6ncqZBCmewZ6n519RjRdDsO44g@mail.gmail.com>
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<[email protected]>
<[email protected]>
On Thu, Dec 5, 2024 at 2:32 AM Tom Lane <[email protected]> wrote:
> Tomas Vondra <[email protected]> writes:
> > I'm not forcing you to do elog, if you think ereport() is better. I'm
> > only asking because AFAIK the "policy" is that ereport is for cases that
> > think can happen (and thus get translated), while elog(ERROR) is for
> > cases that we believe shouldn't happen.
>
> The proposed coding looks fine from that perspective, because it uses
> errmsg_internal and errdetail_internal which don't give rise to
> translatable strings. Having said that, if we think this is a
> "can't happen" case then it's fair to wonder why go to such lengths
> to format it prettily. Also, I'd argue that the error message
> style guidelines still apply, but this errdetail doesn't conform.
Thinking about this further, perhaps an Assert is sufficient here. An
Append/MergeAppend node's part_prune_index not pointing to the correct
entry in the global "flat" list of PartitionPruneInfos would indicate
a bug. It seems unlikely that user actions could cause this issue.
--
Thanks, Amit Langote
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Subject: Re: generic plans and "initial" pruning
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