bug#24303 Wrong result for UPDATE IGNORE for NDB table: Refinement, only read...

bug#24303  Wrong result for UPDATE IGNORE for NDB table: Refinement, only read all fields for UPDATE IGNORE with pk (check if UPDATE command and pk in write_set)

sql/ha_ndbcluster.cc

@@ -3835,10 +3835,13 @@ int ha_ndbcluster::extra(enum ha_extra_function operation)
     DBUG_PRINT("info", ("HA_EXTRA_IGNORE_DUP_KEY"));
     DBUG_PRINT("info", ("Ignoring duplicate key"));
     m_ignore_dup_key= TRUE;
-    if (table_share->primary_key != MAX_KEY)
+    if (current_thd->lex->sql_command == SQLCOM_UPDATE &&
+	table_share->primary_key != MAX_KEY &&
+	bitmap_is_set(table->write_set, table_share->primary_key))
     {
       /*
-	Table has a primary key
+	An UPDATE and table has a primary key that is 
+	about to be updated
 	We need to read all fields for UPDATE IGNORE of pk
 	since this is implemented as delete+insert
       */