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From: Jim Jones <[email protected]>
To: Andrey M. Borodin <[email protected]>
To: Euler Taveira <[email protected]>
Cc: diPhantxm <[email protected]>
Cc: [email protected]
Subject: Re: Truncate logs by max_log_size
Date: Tue, 1 Oct 2024 13:46:44 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CA+E0NR4S+NC6+QHyY_vUuQZMzLhKqczMx-jJVqtjAxF6+=JwAA@mail.gmail.com>
	<[email protected]>
	<[email protected]>


On 27.09.24 12:36, Andrey M. Borodin wrote:
> Consider max_log_size = 10Mb. The perspective might look very different.
>  It’s not about WHERE anymore. It's a guard against heavy abuse.
>
> The feature looks very important for me.
I have the same opinion. As a fail safe it sounds very useful to me.

Unfortunately, the patch does not apply:

$ git apply
~/patches/max_log_query/0001-parameter-max_log_size-to-truncate-logs.patch
-v
Checking patch src/backend/utils/error/elog.c...
error: while searching for:
char       *Log_destination_string = NULL;
bool            syslog_sequence_numbers = true;
bool            syslog_split_messages = true;

/* Processed form of backtrace_symbols GUC */
static char *backtrace_symbol_list;

error: patch failed: src/backend/utils/error/elog.c:114
error: src/backend/utils/error/elog.c: patch does not apply
Checking patch src/backend/utils/misc/guc_tables.c...
Hunk #1 succeeded at 3714 (offset 247 lines).
Checking patch src/backend/utils/misc/postgresql.conf.sample...
Hunk #1 succeeded at 615 (offset 23 lines).
Checking patch src/bin/pg_ctl/t/004_logrotate.pl...
error: while searching for:
check_log_pattern('csvlog',  $new_current_logfiles, 'syntax error', $node);
check_log_pattern('jsonlog', $new_current_logfiles, 'syntax error', $node);

$node->stop();

done_testing();

error: patch failed: src/bin/pg_ctl/t/004_logrotate.pl:135
error: src/bin/pg_ctl/t/004_logrotate.pl: patch does not apply
Checking patch src/include/utils/elog.h...
Hunk #1 succeeded at 502 (offset 1 line).

Does it truncate only single queries or also a transaction with many
statements?

Thanks!

Best, Jim

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