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| author | sjaakola <seppo.jaakola@iki.fi> | 2021-12-09 18:12:20 +0200 |
|---|---|---|
| committer | Jan Lindström <jan.lindstrom@mariadb.com> | 2021-12-17 09:38:23 +0200 |
| commit | c1846c4fcfb04cb628c73b95516deefeb8ee0e19 (patch) | |
| tree | 80e1f43a6e7becd22cc28b43b3ac6d603c9bf630 /sql/service_wsrep.cc | |
| parent | 20f22dfa2f2d5bb5a1511d42a5bb18fbf469e812 (diff) | |
| download | mariadb-git-c1846c4fcfb04cb628c73b95516deefeb8ee0e19.tar.gz | |
MDEV-26803 PA unsafety with FK cascade delete operation
This commit has a mtr test where two two transactions delete a row from
two separate tables, which will cascade a FK delete for the same row in
a third table. Second replica node is configured with 2 applier threads,
and the test will fail if these two transactions are applied in parallel.
The actual fix, in this commit, is to mark a transaction as unsafe for
parallel applying when it traverses into cascade delete operation.
Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
Diffstat (limited to 'sql/service_wsrep.cc')
| -rw-r--r-- | sql/service_wsrep.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sql/service_wsrep.cc b/sql/service_wsrep.cc index 18067a4d0ec..fd2a5c301f2 100644 --- a/sql/service_wsrep.cc +++ b/sql/service_wsrep.cc @@ -381,3 +381,11 @@ extern "C" void wsrep_report_bf_lock_wait(const THD *thd, wsrep_thd_query(thd)); } } + +extern "C" void wsrep_thd_set_PA_unsafe(THD *thd) +{ + if (thd && thd->wsrep_cs().mark_transaction_pa_unsafe()) + { + WSREP_DEBUG("session does not have active transaction, can not mark as PA unsafe"); + } +} |