Re: Proposal: Recent mutated table tracking in memory

From: Tatsuo Ishii <ishii(at)postgresql(dot)org>
To: nadav(at)tailorbrands(dot)com
Cc: pgpool-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Proposal: Recent mutated table tracking in memory
Date: 2026-01-29 08:28:10
Message-ID: 20260129.172810.828658334363427861.ishii@postgresql.org
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> Hi Nadav,
>
> Sorry for the late reply. I just your email now. Will check and reply
> back soon.

Unfortunately your patch failed to apply to current master branch.

$ git apply ~/mutated_table.patch
error: patch failed: src/streaming_replication/pool_worker_child.c:1032
error: src/streaming_replication/pool_worker_child.c: patch does not apply

It tried with patch command and it seems failed here:

--- src/streaming_replication/pool_worker_child.c
+++ src/streaming_replication/pool_worker_child.c
@@ -1034,6 +1036,10 @@ check_replication_time_lag_with_cmd(void)
bkinfo->standby_delay = delay;
bkinfo->standby_delay_by_time = true;

+ /* Track maximum delay for memory map TTL calculation */
+ if (delay > max_delay_us)
+ max_delay_us = delay;
+
/* Log delay if necessary */
delay_threshold_by_time = pool_config->delay_threshold_by_time * 1000; /* threshold is in
* milliseconds, convert

Need rebase?
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp

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