Re: error messages in extended statistics

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От Tomas Vondra
Тема Re: error messages in extended statistics
Дата
Msg-id 20190503194217.53bub7jqml43kml4@development
обсуждение исходный текст
Ответ на Re: error messages in extended statistics  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: error messages in extended statistics  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
Список pgsql-hackers
On Fri, May 03, 2019 at 12:21:36PM -0400, Tom Lane wrote:
>Alvaro Herrera <alvherre@2ndquadrant.com> writes:
>> Error reporting in extended statistics is inconsistent -- many messages
>> that are ereport() in mvdistinct.c are elog() in the other modules.
>> ...
>> I think this should be cleaned up, while at the same time not giving too
>> much hassle for translators; for example, this message
>> dependencies.c:     elog(ERROR, "invalid MVDependencies size %zd (expected at least %zd)",
>> should not only be turned into an ereport(), but also the MVDependencies
>> part turned into a %s.  (Alternatively, we could decide I was wrong and
>> turn them all back into elogs, but I obviously vote against that.)
>
>FWIW, I'd vote the other way: that seems like a clear "internal error",
>so making translators deal with it is just make-work.  It should be an
>elog.  If there's a reasonably plausible way for a user to trigger an
>error condition, then yes ereport, but if we're reporting situations
>that couldn't happen without a server bug then elog seems fine.
>

Yeah, I agree. Most of (peshaps all) those errors are internal errors,
and thus should be elog. I'll take care of clening this up a bit.

regards

-- 
Tomas Vondra                  http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services 



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