Added test for MDEV#4953.

mysql-test/suite/galera/r/partition.result

+#
+# MDEV#4953 Galera: DELETE from a partitioned table is not replicated
+#
+USE test;
+CREATE TABLE t1 (pk INT PRIMARY KEY, i INT) ENGINE=INNODB PARTITION BY HASH(pk) PARTITIONS 2;
+INSERT INTO t1 VALUES (1,100), (2,200);
+SELECT * FROM t1;
+pk	i
+2	200
+1	100
+DELETE FROM t1;
+SELECT * FROM t1;
+pk	i
+
+# On node_1
+SELECT * FROM t1;
+pk	i
+
+# On node_2
+SELECT * FROM t1;
+pk	i
+DROP TABLE t1;
+# End of test

mysql-test/suite/galera/t/partition.test

+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+--source include/have_partition.inc
+
+--echo #
+--echo # MDEV#4953 Galera: DELETE from a partitioned table is not replicated
+--echo #
+
+USE test;
+CREATE TABLE t1 (pk INT PRIMARY KEY, i INT) ENGINE=INNODB PARTITION BY HASH(pk) PARTITIONS 2;
+INSERT INTO t1 VALUES (1,100), (2,200);
+SELECT * FROM t1;
+
+DELETE FROM t1;
+SELECT * FROM t1;
+
+--echo
+--echo # On node_1
+--connection node_1
+SELECT * FROM t1;
+
+--echo
+--echo # On node_2
+--connection node_2
+SELECT * FROM t1;
+
+# Cleanup
+DROP TABLE t1;
+
+--source include/galera_end.inc
+--echo # End of test

sql/ha_partition.h

@@ -1284,17 +1284,8 @@ class ha_partition :public handler
   }
 #ifdef WITH_WSREP
   virtual int wsrep_db_type() const;
-#if 0
-  // TODO: Verify : https://mariadb.atlassian.net/browse/MDEV-4953
-  void wsrep_reset_files()
-  {
-    for (uint i=0; i < m_tot_parts; i++)
-      m_file[i]->ha_start_of_new_statement();
-  }
-#endif
 #endif /* WITH_WSREP */
 
-
   friend int cmp_key_rowid_part_id(void *ptr, uchar *ref1, uchar *ref2);
 };
 

sql/table.cc

@@ -4019,14 +4019,6 @@ void TABLE::init(THD *thd, TABLE_LIST *tl)
   insert_values= 0;
   fulltext_searched= 0;
   file->ft_handler= 0;
-#if 0
-#ifdef WITH_WSREP
-  if (file->ht->db_type == DB_TYPE_PARTITION_DB)
-  {
-    ((ha_partition*)file)->wsrep_reset_files();
-  }
-#endif
-#endif
   reginfo.impossible_range= 0;
   created= TRUE;
   cond_selectivity= 1.0;