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feat(ha-heartbeat-committed-propagation): migrate last_known_committed_config_tag to _Atomic (task 1.1)

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Mirror the sibling last_known_committed_lsn: all writes release, reads acquire.
Prereq for a heartbeat-receive writer + the ctrlstatus reader to interact
safely (Req 2.3). Pure access migration, no behavior change; controller suite
0 failures.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Rongsong Shen 2026-06-20 11:27:46 +00:00
parent 9817813f54
commit f4327ce4f6
6 changed files with 20 additions and 14 deletions
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3
src/controller/ha_convergence.c
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@ -374,7 +374,8 @@ void cluster_apply_ctrlhello_reply(cluster_t *c, uint64_t committed_lsn,
{
atomic_store_explicit(&c->ha.last_known_committed_lsn, committed_lsn,
memory_order_release);
c->ha.last_known_committed_config_tag = config_tag;
atomic_store_explicit(&c->ha.last_known_committed_config_tag, config_tag,
memory_order_release);
INFO("HA: CtrlHelloReply from primary: committed_lsn=%" PRIu64
" config_tag=%" PRIu64, committed_lsn, config_tag);