diff --git a/include/my_base.h b/include/my_base.h
index 7efa5eb9673..50a9abe0bc6 100644
--- a/include/my_base.h
+++ b/include/my_base.h
@@ -631,7 +631,13 @@ typedef struct st_key_multi_range
   key_range start_key;
   key_range end_key;
   range_id_t ptr;                 /* Free to use by caller (ptr to row etc) */
-  uint  range_flag;           /* key range flags see above */
+  /*
+    A set of range flags that describe both endpoints: UNIQUE_RANGE,
+    NULL_RANGE, EQ_RANGE, GEOM_FLAG.
+    (Flags that describe one endpoint, NO_{MIN|MAX}_RANGE, NEAR_{MIN|MAX} will
+     not be set here)
+  */
+  uint  range_flag;
 } KEY_MULTI_RANGE;
 
 
diff --git a/mysql-test/main/opt_trace.result b/mysql-test/main/opt_trace.result
index 65caf3cd2ec..2e4cfb9acb7 100644
--- a/mysql-test/main/opt_trace.result
+++ b/mysql-test/main/opt_trace.result
@@ -8229,6 +8229,37 @@ JSON_DETAILED(JSON_EXTRACT(trace, '$**.semijoin_table_pullout'))
 ]
 drop table t1,t2,t3;
 #
+# MDEV-22401: Optimizer trace: multi-component range is not printed correctly
+#
+create table t1 (kp1 int, kp2 int, key(kp1, kp2));
+insert into t1 values (1,1),(1,5),(5,1),(5,5);
+set optimizer_trace=1;
+select * from t1 force index(kp1) where (kp1=2 and kp2 >=4);
+kp1	kp2
+select JSON_DETAILED(JSON_EXTRACT(trace, '$**.range_scan_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
+JSON_DETAILED(JSON_EXTRACT(trace, '$**.range_scan_alternatives'))
+[
+    
+    [
+        
+        {
+            "index": "kp1",
+            "ranges": 
+            [
+                "(2,4) <= (kp1,kp2) <= (2)"
+            ],
+            "rowid_ordered": false,
+            "using_mrr": false,
+            "index_only": true,
+            "rows": 1,
+            "cost": 0.345829876,
+            "chosen": true
+        }
+    ]
+]
+drop table t1;
+# End of 10.4 tests
+#
 # Test many rows to see output of big cost numbers
 #
 select count(*) from seq_1_to_10000000;
@@ -8326,4 +8357,5 @@ select count(*) from seq_1_to_10000000	{
     }
   ]
 }	0	0
+# End of 10.5 tests
 set optimizer_trace='enabled=off';
diff --git a/mysql-test/main/opt_trace.test b/mysql-test/main/opt_trace.test
index ac8a1366ee5..2839dbad9e6 100644
--- a/mysql-test/main/opt_trace.test
+++ b/mysql-test/main/opt_trace.test
@@ -569,6 +569,20 @@ select JSON_DETAILED(JSON_EXTRACT(trace, '$**.semijoin_table_pullout')) from INF
 
 drop table t1,t2,t3;
 
+--echo #
+--echo # MDEV-22401: Optimizer trace: multi-component range is not printed correctly
+--echo #
+
+create table t1 (kp1 int, kp2 int, key(kp1, kp2));
+insert into t1 values (1,1),(1,5),(5,1),(5,5);
+set optimizer_trace=1;
+select * from t1 force index(kp1) where (kp1=2 and kp2 >=4);
+select JSON_DETAILED(JSON_EXTRACT(trace, '$**.range_scan_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
+drop table t1;
+
+--echo # End of 10.4 tests
+
+
 --echo #
 --echo # Test many rows to see output of big cost numbers
 --echo #
@@ -576,4 +590,5 @@ drop table t1,t2,t3;
 select count(*) from seq_1_to_10000000;
 select * from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
 
+--echo # End of 10.5 tests
 set optimizer_trace='enabled=off';
diff --git a/mysql-test/main/rowid_filter.result b/mysql-test/main/rowid_filter.result
index 6a5c41fd641..bce4d1ddbb5 100644
--- a/mysql-test/main/rowid_filter.result
+++ b/mysql-test/main/rowid_filter.result
@@ -2130,4 +2130,20 @@ EXPLAIN
   }
 }
 DROP TABLE t1,t2;
+#
+# MDEV-22160: SIGSEGV in st_join_table::save_explain_data on SELECT
+#
+set @save_optimizer_switch= @@optimizer_switch;
+SET @@optimizer_switch="index_merge_sort_union=OFF";
+CREATE TABLE t1 (a INT, b INT, INDEX(a), INDEX(b));
+INSERT INTO t1 VALUES (0,0),(1,0),(-1,1), (-2,1), (-2,3), (-3,4), (-2,4);
+explain
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref|filter	a,b	b|a	5|5	const	2 (14%)	Using where; Using rowid filter
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+a	b
+1	0
+drop table t1;
+SET @@optimizer_switch=@save_optimizer_switch;
 set @@use_stat_tables=@save_use_stat_tables;
diff --git a/mysql-test/main/rowid_filter.test b/mysql-test/main/rowid_filter.test
index 6f26e81db92..9ac9465963b 100644
--- a/mysql-test/main/rowid_filter.test
+++ b/mysql-test/main/rowid_filter.test
@@ -339,4 +339,20 @@ eval EXPLAIN FORMAT=JSON $q;
 
 DROP TABLE t1,t2;
 
+
+--echo #
+--echo # MDEV-22160: SIGSEGV in st_join_table::save_explain_data on SELECT
+--echo #
+
+set @save_optimizer_switch= @@optimizer_switch;
+SET @@optimizer_switch="index_merge_sort_union=OFF";
+CREATE TABLE t1 (a INT, b INT, INDEX(a), INDEX(b));
+INSERT INTO t1 VALUES (0,0),(1,0),(-1,1), (-2,1), (-2,3), (-3,4), (-2,4);
+explain
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+drop table t1;
+SET @@optimizer_switch=@save_optimizer_switch;
+
+
 set @@use_stat_tables=@save_use_stat_tables;
diff --git a/mysql-test/main/rowid_filter_innodb.result b/mysql-test/main/rowid_filter_innodb.result
index 67417c82b61..d3507f6bb59 100644
--- a/mysql-test/main/rowid_filter_innodb.result
+++ b/mysql-test/main/rowid_filter_innodb.result
@@ -2079,6 +2079,22 @@ EXPLAIN
   }
 }
 DROP TABLE t1,t2;
+#
+# MDEV-22160: SIGSEGV in st_join_table::save_explain_data on SELECT
+#
+set @save_optimizer_switch= @@optimizer_switch;
+SET @@optimizer_switch="index_merge_sort_union=OFF";
+CREATE TABLE t1 (a INT, b INT, INDEX(a), INDEX(b));
+INSERT INTO t1 VALUES (0,0),(1,0),(-1,1), (-2,1), (-2,3), (-3,4), (-2,4);
+explain
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ref|filter	a,b	b|a	5|5	const	2 (14%)	Using where; Using rowid filter
+SELECT * FROM t1 WHERE a > 0 AND b=0;
+a	b
+1	0
+drop table t1;
+SET @@optimizer_switch=@save_optimizer_switch;
 set @@use_stat_tables=@save_use_stat_tables;
 #
 # MDEV-18755: possible RORI-plan and possible plan with range filter
diff --git a/mysql-test/suite/galera/r/galera_var_cluster_conf_id.result b/mysql-test/suite/galera/r/galera_var_cluster_conf_id.result
new file mode 100644
index 00000000000..2507b1f96f2
--- /dev/null
+++ b/mysql-test/suite/galera/r/galera_var_cluster_conf_id.result
@@ -0,0 +1,10 @@
+connection node_2;
+connection node_1;
+connection node_1;
+show status like 'wsrep_cluster_conf_id';
+Variable_name	Value
+wsrep_cluster_conf_id	2
+connection node_2;
+show status like 'wsrep_cluster_conf_id';
+Variable_name	Value
+wsrep_cluster_conf_id	2
diff --git a/mysql-test/suite/galera/t/galera_var_cluster_conf_id.test b/mysql-test/suite/galera/t/galera_var_cluster_conf_id.test
new file mode 100644
index 00000000000..95ade07f043
--- /dev/null
+++ b/mysql-test/suite/galera/t/galera_var_cluster_conf_id.test
@@ -0,0 +1,7 @@
+--source include/galera_cluster.inc
+
+--connection node_1
+show status like 'wsrep_cluster_conf_id';
+
+--connection node_2
+show status like 'wsrep_cluster_conf_id';
diff --git a/sql/opt_range.cc b/sql/opt_range.cc
index 384b2d5ced2..569d53ced0c 100644
--- a/sql/opt_range.cc
+++ b/sql/opt_range.cc
@@ -3223,8 +3223,18 @@ double records_in_column_ranges(PARAM *param, uint idx,
     key_range *min_endp, *max_endp;
     min_endp= range.start_key.length? &range.start_key : NULL;
     max_endp= range.end_key.length? &range.end_key : NULL;
-    rows= get_column_range_cardinality(field, min_endp, max_endp,
-                                       range.range_flag);
+    int range_flag= range.range_flag;
+
+    if (!range.start_key.length)
+      range_flag |= NO_MIN_RANGE;
+    if (!range.end_key.length)
+      range_flag |= NO_MAX_RANGE;
+    if (range.start_key.flag == HA_READ_AFTER_KEY)
+      range_flag |= NEAR_MIN;
+    if (range.start_key.flag == HA_READ_BEFORE_KEY)
+      range_flag |= NEAR_MAX;
+
+    rows= get_column_range_cardinality(field, min_endp, max_endp, range_flag);
     if (DBL_MAX == rows)
     {
       total_rows= DBL_MAX;
@@ -15830,24 +15840,29 @@ void print_range(String *out, const KEY_PART_INFO *key_part,
     return;
   }
 
-  if (!(flag & NO_MIN_RANGE))
+  if (range->start_key.length)
   {
     print_key_value(out, key_part, range->start_key.key,
                     range->start_key.length);
-    if (flag & NEAR_MIN)
+    if (range->start_key.flag == HA_READ_AFTER_KEY)
       out->append(STRING_WITH_LEN(" < "));
-    else
+    else if (range->start_key.flag == HA_READ_KEY_EXACT ||
+             range->start_key.flag == HA_READ_KEY_OR_NEXT)
       out->append(STRING_WITH_LEN(" <= "));
+    else
+      out->append(STRING_WITH_LEN(" ? "));
   }
 
   print_keyparts_name(out, key_part, n_key_parts, keypart_map);
 
-  if (!(flag & NO_MAX_RANGE))
+  if (range->end_key.length)
   {
-    if (flag & NEAR_MAX)
+    if (range->end_key.flag == HA_READ_BEFORE_KEY)
       out->append(STRING_WITH_LEN(" < "));
-    else
+    else if (range->end_key.flag == HA_READ_AFTER_KEY)
       out->append(STRING_WITH_LEN(" <= "));
+    else
+      out->append(STRING_WITH_LEN(" ? "));
     print_key_value(out, key_part, range->end_key.key,
                     range->end_key.length);
   }
diff --git a/sql/opt_range_mrr.cc b/sql/opt_range_mrr.cc
index 4afa06a7ca0..267d764bb3b 100644
--- a/sql/opt_range_mrr.cc
+++ b/sql/opt_range_mrr.cc
@@ -262,7 +262,6 @@ walk_up_n_right:
   else
   {
     max_key_parts= MY_MAX(cur->min_key_parts, cur->max_key_parts);
-    range->range_flag= cur->min_key_flag | cur->max_key_flag;
     
     range->start_key.key=    seq->param->min_key;
     range->start_key.length= (uint)(cur->min_key - seq->param->min_key);
@@ -298,6 +297,7 @@ walk_up_n_right:
         !memcmp(seq->param->min_key, seq->param->max_key,    // (2)
                 range->start_key.length);
 
+    range->range_flag= 0;
     if (is_eq_range_pred)
     {
       range->range_flag = EQ_RANGE;
diff --git a/sql/wsrep_server_service.cc b/sql/wsrep_server_service.cc
index 6d737463f07..50aea494255 100644
--- a/sql/wsrep_server_service.cc
+++ b/sql/wsrep_server_service.cc
@@ -201,6 +201,7 @@ void Wsrep_server_service::log_view(
   wsrep_update_cluster_state_uuid(os.str().c_str());
   mysql_mutex_unlock(&LOCK_status);
   wsrep_config_state->set(view);
+  wsrep_cluster_conf_id= view.view_seqno().get();
 
   if (view.status() == wsrep::view::primary)
   {
diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc
index f46b3087e57..2e4652cd4b0 100644
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -4134,27 +4134,35 @@ innobase_commit_low(
 {
 #ifdef WITH_WSREP
 	const char* tmp = 0;
-	if (trx->is_wsrep()) {
+	const bool is_wsrep = trx->is_wsrep();
+	THD* thd = trx->mysql_thd;
+	if (is_wsrep) {
 #ifdef WSREP_PROC_INFO
 		char info[64];
 		info[sizeof(info) - 1] = '\0';
 		snprintf(info, sizeof(info) - 1,
 			 "innobase_commit_low():trx_commit_for_mysql(%lld)",
-			 (long long) wsrep_thd_trx_seqno(trx->mysql_thd));
-		tmp = thd_proc_info(trx->mysql_thd, info);
+			 (long long) wsrep_thd_trx_seqno(thd));
+		tmp = thd_proc_info(thd, info);
 #else
-		tmp = thd_proc_info(trx->mysql_thd, "innobase_commit_low()");
+		tmp = thd_proc_info(thd, "innobase_commit_low()");
 #endif /* WSREP_PROC_INFO */
 	}
 #endif /* WITH_WSREP */
 	if (trx_is_started(trx)) {
-
 		trx_commit_for_mysql(trx);
-	}
-	trx->will_lock = 0;
+	} else {
+		trx->will_lock = 0;
 #ifdef WITH_WSREP
-	if (trx->is_wsrep()) { thd_proc_info(trx->mysql_thd, tmp); }
+		trx->wsrep = false;
 #endif /* WITH_WSREP */
+	}
+
+#ifdef WITH_WSREP
+	if (is_wsrep) {
+		thd_proc_info(thd, tmp);
+#endif /* WITH_WSREP */
+	}
 }
 
 /*****************************************************************//**
@@ -4820,22 +4828,12 @@ static int innobase_close_connection(handlerton *hton, THD *thd)
   DBUG_ASSERT(hton == innodb_hton_ptr);
   if (auto trx= thd_to_trx(thd))
   {
-    if (trx->state == TRX_STATE_PREPARED)
+    if (trx->state == TRX_STATE_PREPARED && trx->has_logged_persistent())
     {
-      if (trx->has_logged_persistent())
-      {
-        trx_disconnect_prepared(trx);
-        return 0;
-      }
-      innobase_rollback_trx(trx);
+      trx_disconnect_prepared(trx);
+      return 0;
     }
-    /*
-      in theory it may fire if preceding rollback failed,
-      but what can we do about it?
-    */
-    DBUG_ASSERT(!trx_is_started(trx));
-    /* some bad guy missed to reset trx->will_lock somewhere, reset it here */
-    trx->will_lock= 0;
+    innobase_rollback_trx(trx);
     trx_free(trx);
   }
   return 0;
@@ -5809,7 +5807,6 @@ ha_innobase::open(const char* name, int, uint)
 			sql_print_error("Failed to open table %s.\n",
 					norm_name);
 		}
-no_such_table:
 		set_my_errno(ENOENT);
 
 		DBUG_RETURN(HA_ERR_NO_SUCH_TABLE);
@@ -5835,7 +5832,8 @@ no_such_table:
 		ib_table->file_unreadable = true;
 		ib_table->corrupted = true;
 		dict_table_close(ib_table, FALSE, FALSE);
-		goto no_such_table;
+		set_my_errno(ENOENT);
+		DBUG_RETURN(HA_ERR_CRASHED_ON_USAGE);
 	}
 
 	innobase_copy_frm_flags_from_table_share(ib_table, table->s);
diff --git a/storage/innobase/include/trx0trx.h b/storage/innobase/include/trx0trx.h
index 25cc6df36a0..be4504f71d8 100644
--- a/storage/innobase/include/trx0trx.h
+++ b/storage/innobase/include/trx0trx.h
@@ -442,6 +442,7 @@ Check transaction state */
 	ut_ad(!(t)->id);						\
 	ut_ad(!(t)->has_logged());					\
 	ut_ad(!(t)->is_referenced());					\
+	ut_ad(!(t)->is_wsrep());					\
 	ut_ad(!(t)->read_view.is_open());				\
 	ut_ad((t)->lock.wait_thr == NULL);				\
 	ut_ad(UT_LIST_GET_LEN((t)->lock.trx_locks) == 0);		\
diff --git a/storage/innobase/trx/trx0roll.cc b/storage/innobase/trx/trx0roll.cc
index adf41906cb7..c20cf4842a0 100644
--- a/storage/innobase/trx/trx0roll.cc
+++ b/storage/innobase/trx/trx0roll.cc
@@ -208,6 +208,9 @@ dberr_t trx_rollback_for_mysql(trx_t* trx)
 	case TRX_STATE_NOT_STARTED:
 		trx->will_lock = 0;
 		ut_ad(trx->mysql_thd);
+#ifdef WITH_WSREP
+		trx->wsrep = false;
+#endif
 		return(DB_SUCCESS);
 
 	case TRX_STATE_ACTIVE:
diff --git a/storage/innobase/trx/trx0trx.cc b/storage/innobase/trx/trx0trx.cc
index dcddaabaf48..f9c8ede1f1b 100644
--- a/storage/innobase/trx/trx0trx.cc
+++ b/storage/innobase/trx/trx0trx.cc
@@ -109,9 +109,6 @@ trx_init(
 	trx->state = TRX_STATE_NOT_STARTED;
 
 	trx->is_recovered = false;
-#ifdef WITH_WSREP
-	trx->wsrep = false;
-#endif /* WITH_WSREP */
 
 	trx->op_info = "";
 
@@ -1489,6 +1486,17 @@ inline void trx_t::commit_in_memory(const mtr_t *mtr)
   DBUG_LOG("trx", "Commit in memory: " << this);
   state= TRX_STATE_NOT_STARTED;
 
+#ifdef WITH_WSREP
+  /* Serialization history has been written and the transaction is
+  committed in memory, which makes this commit ordered. Release commit
+  order critical section. */
+  if (wsrep)
+  {
+    wsrep= false;
+    wsrep_commit_ordered(mysql_thd);
+  }
+#endif /* WITH_WSREP */
+
   assert_trx_is_free(this);
   trx_init(this);
   trx_mutex_exit(this);
@@ -1566,13 +1574,6 @@ void trx_t::commit()
     local_mtr.start();
   }
   commit_low(mtr);
-#ifdef WITH_WSREP
-  /* Serialization history has been written and the transaction is
-  committed in memory, which makes this commit ordered. Release commit
-  order critical section. */
-  if (mtr && is_wsrep())
-    wsrep_commit_ordered(mysql_thd);
-#endif /* WITH_WSREP */
 }
 
 /****************************************************************//**