A modest proposal: let's add PID to assertion failure messages

Started by Tom Laneover 5 years ago5 messageshackers
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#1Tom Lane
tgl@sss.pgh.pa.us

In these days when we run almost all test cases in parallel, it's
frequently not that easy to tie a "TRAP: ..." message in the log
to nearby log messages. (The postmaster's subsequent complaint
often helps, but it could be some distance away in the log; and
good luck untangling things if more than one Assert failure happens
concurrently.) We could add a simple bread crumb trail by
including the process's PID in such messages. Any objections?

regards, tom lane

#2Thomas Munro
thomas.munro@gmail.com
In reply to: Tom Lane (#1)
Re: A modest proposal: let's add PID to assertion failure messages

On Mon, Oct 5, 2020 at 10:08 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:

In these days when we run almost all test cases in parallel, it's
frequently not that easy to tie a "TRAP: ..." message in the log
to nearby log messages. (The postmaster's subsequent complaint
often helps, but it could be some distance away in the log; and
good luck untangling things if more than one Assert failure happens
concurrently.) We could add a simple bread crumb trail by
including the process's PID in such messages. Any objections?

+1

#3Michael Paquier
michael@paquier.xyz
In reply to: Thomas Munro (#2)
Re: A modest proposal: let's add PID to assertion failure messages

On Mon, Oct 05, 2020 at 10:20:01AM +1300, Thomas Munro wrote:

On Mon, Oct 5, 2020 at 10:08 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:

In these days when we run almost all test cases in parallel, it's
frequently not that easy to tie a "TRAP: ..." message in the log
to nearby log messages. (The postmaster's subsequent complaint
often helps, but it could be some distance away in the log; and
good luck untangling things if more than one Assert failure happens
concurrently.) We could add a simple bread crumb trail by
including the process's PID in such messages. Any objections?

+1

+1.  (log_line_prefix includes %p in its default configuration for the
TAP tests).
--
Michael
#4Tom Lane
tgl@sss.pgh.pa.us
In reply to: Michael Paquier (#3)
Re: A modest proposal: let's add PID to assertion failure messages

Michael Paquier <michael@paquier.xyz> writes:

+1. (log_line_prefix includes %p in its default configuration for the
TAP tests).

Right, but of course you don't get log_line_prefix on Assert messages.

regards, tom lane

#5Andres Freund
andres@anarazel.de
In reply to: Thomas Munro (#2)
Re: A modest proposal: let's add PID to assertion failure messages

On 2020-10-05 10:20:01 +1300, Thomas Munro wrote:

On Mon, Oct 5, 2020 at 10:08 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:

In these days when we run almost all test cases in parallel, it's
frequently not that easy to tie a "TRAP: ..." message in the log
to nearby log messages. (The postmaster's subsequent complaint
often helps, but it could be some distance away in the log; and
good luck untangling things if more than one Assert failure happens
concurrently.) We could add a simple bread crumb trail by
including the process's PID in such messages. Any objections?

+1

+1