Merge

mysql-test/r/join_outer.result:
  Auto merged
mysql-test/t/join_outer.test:
  Auto merged
sql-common/client.c:
  Auto merged
sql/mysqld.cc:
  Auto merged

client/mysqltest.c

@@ -294,6 +294,7 @@ Q_QUERY_VERTICAL, Q_QUERY_HORIZONTAL,
 Q_START_TIMER, Q_END_TIMER,
 Q_CHARACTER_SET, Q_DISABLE_PS_PROTOCOL, Q_ENABLE_PS_PROTOCOL,
 Q_EXIT,
+Q_DISABLE_RECONNECT, Q_ENABLE_RECONNECT,
 
 Q_UNKNOWN,			       /* Unknown command.   */
 Q_COMMENT,			       /* Comments, ignored. */
@@ -382,6 +383,8 @@ const char *command_names[]=
   "disable_ps_protocol",
   "enable_ps_protocol",
   "exit",
+  "disable_reconnect",
+  "enable_reconnect",
   0
 };
 
@@ -3895,6 +3898,12 @@ int main(int argc, char **argv)
       case Q_ENABLE_PS_PROTOCOL:
         ps_protocol_enabled= ps_protocol;
         break;
+      case Q_DISABLE_RECONNECT:
+        cur_con->mysql.reconnect= 0;
+        break;
+      case Q_ENABLE_RECONNECT:
+        cur_con->mysql.reconnect= 1;
+        break;
 
       case Q_EXIT:
         abort_flag= 1;

mysql-test/r/join_outer.result

@@ -924,3 +924,22 @@ a	b	a	b
 3	1	NULL	NULL
 4	2	NULL	NULL
 DROP TABLE t1,t2;
+set group_concat_max_len=5;
+create table t1 (a int, b varchar(20));
+create table t2 (a int, c varchar(20));
+insert into t1 values (1,"aaaaaaaaaa"),(2,"bbbbbbbbbb");
+insert into t2 values (1,"cccccccccc"),(2,"dddddddddd");
+select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by t1.a;
+group_concat(t1.b,t2.c)
+aaaaa
+bbbbb
+Warnings:
+Warning	1260	2 line(s) were cut by GROUP_CONCAT()
+select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a;
+group_concat(t1.b,t2.c)
+aaaaa
+bbbbb
+Warnings:
+Warning	1260	2 line(s) were cut by GROUP_CONCAT()
+drop table t1, t2;
+set group_concat_max_len=default;

mysql-test/r/kill.result

@@ -5,6 +5,8 @@ select ((@id := kill_id) - kill_id) from t1;
 ((@id := kill_id) - kill_id)
 0
 kill @id;
+select 1;
+ERROR HY000: MySQL server has gone away
 select ((@id := kill_id) - kill_id) from t1;
 ((@id := kill_id) - kill_id)
 0

mysql-test/t/join_outer.test

@@ -651,4 +651,13 @@ SELECT * FROM t1 LEFT JOIN t2 ON t1.a=t2.a WHERE not(0+(t1.a=30 and t2.b=1));
 
 DROP TABLE t1,t2;
 
-
+# Bug #8681: Bad warning message when group_concat() exceeds max length
+set group_concat_max_len=5;
+create table t1 (a int, b varchar(20));
+create table t2 (a int, c varchar(20));
+insert into t1 values (1,"aaaaaaaaaa"),(2,"bbbbbbbbbb");
+insert into t2 values (1,"cccccccccc"),(2,"dddddddddd");
+select group_concat(t1.b,t2.c) from t1 left join t2 using(a) group by t1.a;
+select group_concat(t1.b,t2.c) from t1 inner join t2 using(a) group by t1.a;
+drop table t1, t2;
+set group_concat_max_len=default;

mysql-test/t/kill.test

@@ -23,12 +23,14 @@ connection con2;
 select ((@id := kill_id) - kill_id) from t1; 
 kill @id;
 
-# Wait for thread to do.
---sleep 5
-# verify that con1 is doning a reconnect
 connection con1;
---ping
---ping
+
+--disable_reconnect
+# this statement should fail
+--error 2006
+select 1;
+--enable_reconnect
+# this should work, and we should have a new connection_id()
 select ((@id := kill_id) - kill_id) from t1;
 select @id != connection_id();
 

sql-common/client.c

@@ -2211,6 +2211,29 @@ my_bool mysql_reconnect(MYSQL *mysql)
   }
   tmp_mysql.reconnect= 1;
   tmp_mysql.free_me= mysql->free_me;
+
+  /*
+    For each stmt in mysql->stmts, move it to tmp_mysql if it is
+    in state MYSQL_STMT_INIT_DONE, otherwise close it.
+  */
+  {
+    LIST *element= mysql->stmts;
+    for (; element; element= element->next)
+    {
+      MYSQL_STMT *stmt= (MYSQL_STMT *) element->data;
+      if (stmt->state != MYSQL_STMT_INIT_DONE)
+      {
+        stmt->mysql= 0;
+      }
+      else
+      {
+        tmp_mysql.stmts= list_add(tmp_mysql.stmts, &stmt->list);
+      }
+      /* No need to call list_delete for statement here */
+    }
+    mysql->stmts= NULL;
+  }
+
   /* Don't free options as these are now used in tmp_mysql */
   bzero((char*) &mysql->options,sizeof(mysql->options));
   mysql->free_me=0;
@@ -2299,6 +2322,10 @@ static void mysql_close_free(MYSQL *mysql)
   SYNOPSYS
     mysql_detach_stmt_list()
       stmt_list  pointer to mysql->stmts
+
+  NOTE
+    There is similar code in mysql_reconnect(), so changes here
+    should also be reflected there.
 */
 
 void mysql_detach_stmt_list(LIST **stmt_list __attribute__((unused)))

sql/item_sum.cc

@@ -2802,9 +2802,20 @@ Item_func_group_concat::Item_func_group_concat(THD *thd,
 
 void Item_func_group_concat::cleanup()
 {
+  THD *thd= current_thd;
+
   DBUG_ENTER("Item_func_group_concat::cleanup");
   Item_sum::cleanup();
 
+  /* Adjust warning message to include total number of cut values */
+  if (warning)
+  {
+    char warn_buff[MYSQL_ERRMSG_SIZE];
+    sprintf(warn_buff, ER(ER_CUT_VALUE_GROUP_CONCAT), count_cut_values);
+    warning->set_msg(thd, warn_buff);
+    warning= 0;
+  }
+
   /*
     Free table and tree if they belong to this item (if item have not pointer
     to original item from which was made copy => it own its objects )
@@ -3059,6 +3070,10 @@ String* Item_func_group_concat::val_str(String* str)
     return 0;
   if (count_cut_values && !warning)
   {
+    /*
+      ER_CUT_VALUE_GROUP_CONCAT needs an argument, but this gets set in
+      Item_func_group_concat::cleanup().
+    */
     DBUG_ASSERT(table);
     warning= push_warning(table->in_use, MYSQL_ERROR::WARN_LEVEL_WARN,
                           ER_CUT_VALUE_GROUP_CONCAT,

sql/mysqld.cc

@@ -6116,16 +6116,6 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
     sf_malloc_mem_limit = atoi(argument);
 #endif
     break;
-#ifdef EMBEDDED_LIBRARY
-  case OPT_MAX_ALLOWED_PACKET:
-    max_allowed_packet= atoi(argument);
-    global_system_variables.max_allowed_packet= max_allowed_packet;
-    break;
-  case OPT_NET_BUFFER_LENGTH:
-    net_buffer_length=  atoi(argument);
-    global_system_variables.net_buffer_length= net_buffer_length;
-    break;
-#endif
 #include <sslopt-case.h>
   case 'V':
     print_version();
@@ -6713,6 +6703,9 @@ static void get_options(int argc,char **argv)
 #ifndef EMBEDDED_LIBRARY
   if (mysqld_chroot)
     set_root(mysqld_chroot);
+#else
+  max_allowed_packet= global_system_variables.max_allowed_packet;
+  net_buffer_length= global_system_variables.net_buffer_length;
 #endif
   fix_paths();