commit 3d05780f5723d8918dc5769016674322e7f26ebd
Author: wenfeng.zhang <wenfeng.zhang@greatopensource.com>
Date:   Wed Apr 8 18:08:43 2020 +0800

    how to repeat xa_prepare bug

diff --git a/mysql-test/t/xa_prepare_bug.test b/mysql-test/t/xa_prepare_bug.test
new file mode 100644
index 00000000000..1fbce97c410
--- /dev/null
+++ b/mysql-test/t/xa_prepare_bug.test
@@ -0,0 +1,12 @@
+create table t1 (c1 int primary key);
+insert into t1 values (1);
+xa start '1';
+delete from t1 where c1=1;
+xa end '1';
+SET SESSION DEBUG='+d,test_xa_prepare_failed';
+--error ER_XA_RBROLLBACK
+xa prepare '1';
+select * from t1;
+xa recover;
+show binlog events;
+
diff --git a/sql/handler.cc b/sql/handler.cc
index 6d576c3fd03..be6dad4046d 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -1380,6 +1380,11 @@ static int prepare_one_ht(THD *thd, handlerton *ht) {
       ha_rollback_trans(thd, true);
       return 1;
     });
+    if (DBUG_EVALUATE_IF("test_xa_prepare_failed", true, false) &&
+        ht->db_type != DB_TYPE_BINLOG) {
+      ha_rollback_trans(thd, true);
+      return 1;
+    }
     if (ht->prepare(ht, thd, true)) {
       ha_rollback_trans(thd, true);
       return 1;