From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Eisentraut <peter.eisentraut@2ndquadrant.com>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>
Cc: Robert Haas <robertmhaas@gmail.com>
Cc: David Rowley <david.rowley@2ndquadrant.com>
Cc: Amit Langote <amitlangote09@gmail.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: Jesper Pedersen <jesper.pedersen@redhat.com>
Cc: Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com>
Cc: Beena Emerson <memissemerson@gmail.com>
Cc: amul sul <sulamul@gmail.com>
Cc: pgsql-hackers@postgresql.org <pgsql-hackers@postgresql.org>
Cc: Dilip Kumar <dilipbalaut@gmail.com>
Subject: Re: [HACKERS] Runtime Partition Pruning
Date: Fri, 24 May 2019 11:34:58 -0400
Message-ID: <16535.1558712098@sss.pgh.pa.us> (raw)
In-Reply-To: <16007.1558711252@sss.pgh.pa.us>
References: <20180410213203.nl645o5vj5ap66sl@alvherre.pgsql>
<d4903af2-e7b7-b551-71f8-3e4a6bdc2e73@2ndquadrant.com>
<16007.1558711252@sss.pgh.pa.us>
I wrote:
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>> What do people think about adding something like this errbacktrace()
>> from Álvaro's patch to core PostgreSQL?
> I think we did discuss it right after that, or somewhere nearby, and
> concluded that the output is so imprecise that it's not really going
> to be worth whatever portability issues we'd have to deal with.
Hmm, after some digging in the archives, the closest thing I can find
is this thread:
https://www.postgresql.org/message-id/flat/CAMsr%2BYGL%2ByfWE%3DJvbUbnpWtrRZNey7hJ07%2BzT4bYJdVp4Szd...
where we discussed using libunwind instead, but people didn't like
the extra dependency.
However, I stand by the assertion that glibc's backtrace() is too
imprecise to be useful; I've experimented with it and despaired of
being able to tell where control had actually been.
regards, tom lane
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To: pgsql-hackers@postgresql.org
Cc: tgl@sss.pgh.pa.us, peter.eisentraut@2ndquadrant.com, alvherre@alvh.no-ip.org, robertmhaas@gmail.com, david.rowley@2ndquadrant.com, amitlangote09@gmail.com, Langote_Amit_f8@lab.ntt.co.jp, jesper.pedersen@redhat.com, rajkumar.raghuwanshi@enterprisedb.com, memissemerson@gmail.com, sulamul@gmail.com, dilipbalaut@gmail.com
Subject: Re: [HACKERS] Runtime Partition Pruning
In-Reply-To: <16535.1558712098@sss.pgh.pa.us>
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