From 72776d4c49dea4848131d94af8b226a3d895514c Mon Sep 17 00:00:00 2001
From: Sachin <sachin.setiya@mariadb.com>
Date: Fri, 29 May 2020 22:12:44 +0530
Subject: [PATCH] MDEV-22722 Assertion "inited==NONE" failed in
 handler::ha_index_init on the slave during UPDATE

Add missing call for handler->prepare_for_insert() in Rows_log_event::do_apply_event
---
 .../main/long_unique_bugs_replication.result  | 12 ++++++++++
 .../main/long_unique_bugs_replication.test    | 24 +++++++++++++++++++
 sql/log_event_server.cc                       |  2 ++
 3 files changed, 38 insertions(+)
 create mode 100644 mysql-test/main/long_unique_bugs_replication.result
 create mode 100644 mysql-test/main/long_unique_bugs_replication.test

diff --git a/mysql-test/main/long_unique_bugs_replication.result b/mysql-test/main/long_unique_bugs_replication.result
new file mode 100644
index 0000000000000..af583d00ceafa
--- /dev/null
+++ b/mysql-test/main/long_unique_bugs_replication.result
@@ -0,0 +1,12 @@
+include/master-slave.inc
+[connection master]
+create table t1 (i1 int, a1 text, unique key i1 (a1)) engine=myisam;
+insert into t1 values (1,1);
+insert into t1 values (2,2);
+update t1 set a1 = 'd' limit 1;
+update t1 set a1 = 'd2' where i1= 2;
+connection slave;
+connection slave;
+connection master;
+drop table t1;
+include/rpl_end.inc
diff --git a/mysql-test/main/long_unique_bugs_replication.test b/mysql-test/main/long_unique_bugs_replication.test
new file mode 100644
index 0000000000000..1cacd088bee6d
--- /dev/null
+++ b/mysql-test/main/long_unique_bugs_replication.test
@@ -0,0 +1,24 @@
+#
+# Long unique bugs related to master slave replication
+#
+
+#
+# MDEV-22722 Assertion "inited==NONE" failed in handler::ha_index_init on the slave during UPDATE
+#
+
+--source include/have_binlog_format_row.inc
+--source include/master-slave.inc
+
+create table t1 (i1 int, a1 text, unique key i1 (a1)) engine=myisam;
+insert into t1 values (1,1);
+insert into t1 values (2,2);
+update t1 set a1 = 'd' limit 1;
+update t1 set a1 = 'd2' where i1= 2;
+
+sync_slave_with_master;
+connection slave;
+
+connection master;
+drop table t1;
+
+--source include/rpl_end.inc
diff --git a/sql/log_event_server.cc b/sql/log_event_server.cc
index 5910ece12f073..f59c8110e51ed 100644
--- a/sql/log_event_server.cc
+++ b/sql/log_event_server.cc
@@ -5570,6 +5570,8 @@ int Rows_log_event::do_apply_event(rpl_group_info *rgi)
   {
     master_had_triggers= table->master_had_triggers;
     bool transactional_table= table->file->has_transactions_and_rollback();
+    table->file->prepare_for_insert(get_genral_type_code() != WRITE_ROWS_EVENT);
+
     /*
       table == NULL means that this table should not be replicated
       (this was set up by Table_map_log_event::do_apply_event()