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MDEV-26391 BF abortable mariabackup execution

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This commit changes backup execution (namely the block ddl phase),
so that node is not paused from cluster. Instead, the following
backup execution is declared as vulnerable for possible cluster
level conflicts, especially with DDL statement applying.
With this, the mariabackup execution may be aborted, if DDL
statements happen during backup execution. This abortable
backup execution is optional feature and may be
enabled/disabled by wsrep_mode: BF_ABORT_MARIABACKUP.
Note that old style node desync and pause, despite of
WSREP_MODE_BF_MARIABACKUP is needed if node is operating as
SST donor.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
This commit is contained in:
sjaakola 2022-06-17 15:16:23 +03:00 • committed by Jan Lindström
commit 95de5248c7
10 changed files with 53 additions and 15 deletions
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3
sql/service_wsrep.cc
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@ -241,7 +241,7 @@ extern "C" my_bool wsrep_thd_bf_abort(THD *bf_thd, THD *victim_thd,
victim_thd->awake_no_mutex(KILL_QUERY);
mysql_mutex_unlock(&victim_thd->LOCK_thd_data);
} else {
WSREP_DEBUG("wsrep_thd_bf_abort skipped awake");
WSREP_DEBUG("wsrep_thd_bf_abort skipped awake, signal %d", signal);
}
return ret;
}
@ -277,7 +277,6 @@ extern "C" my_bool wsrep_thd_is_aborting(const MYSQL_THD thd)
return (cs.state() == wsrep::client_state::s_exec ||
cs.state() == wsrep::client_state::s_result);
case wsrep::transaction::s_aborting:
case wsrep::transaction::s_aborted:
return true;
default:
return false;