diff options
Diffstat (limited to 'storage/innobase/btr/btr0cur.cc')
| -rw-r--r-- | storage/innobase/btr/btr0cur.cc | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/storage/innobase/btr/btr0cur.cc b/storage/innobase/btr/btr0cur.cc index 59c6d06d5af..041cd8cd1b4 100644 --- a/storage/innobase/btr/btr0cur.cc +++ b/storage/innobase/btr/btr0cur.cc @@ -3,7 +3,7 @@ Copyright (c) 1994, 2019, Oracle and/or its affiliates. All Rights Reserved. Copyright (c) 2008, Google Inc. Copyright (c) 2012, Facebook Inc. -Copyright (c) 2015, 2020, MariaDB Corporation. +Copyright (c) 2015, 2021, MariaDB Corporation. Portions of this file contain modifications contributed and copyrighted by Google, Inc. Those modifications are gratefully acknowledged and are described @@ -67,6 +67,9 @@ Created 10/16/1994 Heikki Tuuri #include "srv0start.h" #include "mysql_com.h" #include "dict0stats.h" +#ifdef WITH_WSREP +#include "mysql/service_wsrep.h" +#endif /* WITH_WSREP */ /** Buffered B-tree operation types, introduced as part of delete buffering. */ enum btr_op_t { @@ -3288,7 +3291,8 @@ btr_cur_ins_lock_and_undo( /* Check if there is predicate or GAP lock preventing the insertion */ if (!(flags & BTR_NO_LOCKING_FLAG)) { - if (dict_index_is_spatial(index)) { + const unsigned type = index->type; + if (UNIV_UNLIKELY(type & DICT_SPATIAL)) { lock_prdt_t prdt; rtr_mbr_t mbr; @@ -3305,9 +3309,30 @@ btr_cur_ins_lock_and_undo( index, thr, mtr, &prdt); *inherit = false; } else { +#ifdef WITH_WSREP + trx_t* trx= thr_get_trx(thr); + /* If transaction scanning an unique secondary + key is wsrep high priority thread (brute + force) this scanning may involve GAP-locking + in the index. As this locking happens also + when applying replication events in high + priority applier threads, there is a + probability for lock conflicts between two + wsrep high priority threads. To avoid this + GAP-locking we mark that this transaction + is using unique key scan here. */ + if ((type & (DICT_CLUSTERED | DICT_UNIQUE)) == DICT_UNIQUE + && trx->is_wsrep() + && wsrep_thd_is_BF(trx->mysql_thd, false)) { + trx->wsrep_UK_scan= true; + } +#endif /* WITH_WSREP */ err = lock_rec_insert_check_and_lock( flags, rec, btr_cur_get_block(cursor), index, thr, mtr, inherit); +#ifdef WITH_WSREP + trx->wsrep_UK_scan= false; +#endif /* WITH_WSREP */ } } |