Bug 22047: Time in SHOW PROCESSLIST for SQL thread in replication seems to

become negative

- merged the fix to 5.1
- extended to cover I_S.PROCESSLIST.TIME
- Changed the column type of I_S.PROCESSLIST.TIME from LOGNLONG
  UNSIGNED
  to LONG (to match the SHOW PROCESSLIST type)
- Added a test case

mysql-test/r/create.result

@@ -1731,7 +1731,7 @@ t1	CREATE TABLE `t1` (
   `HOST` varchar(64) NOT NULL DEFAULT '',
   `DB` varchar(64) DEFAULT NULL,
   `COMMAND` varchar(16) NOT NULL DEFAULT '',
-  `TIME` bigint(7) NOT NULL DEFAULT '0',
+  `TIME` int(7) NOT NULL DEFAULT '0',
   `STATE` varchar(64) DEFAULT NULL,
   `INFO` longtext
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8
@@ -1745,7 +1745,7 @@ t1	CREATE TEMPORARY TABLE `t1` (
   `HOST` varchar(64) NOT NULL DEFAULT '',
   `DB` varchar(64) DEFAULT NULL,
   `COMMAND` varchar(16) NOT NULL DEFAULT '',
-  `TIME` bigint(7) NOT NULL DEFAULT '0',
+  `TIME` int(7) NOT NULL DEFAULT '0',
   `STATE` varchar(64) DEFAULT NULL,
   `INFO` longtext
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8

mysql-test/r/information_schema.result

@@ -1720,4 +1720,9 @@ SELECT CREATE_OPTIONS FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
 CREATE_OPTIONS
 KEY_BLOCK_SIZE=1
 DROP TABLE t1;
+SET TIMESTAMP=@@TIMESTAMP + 10000000;
+SELECT 'OK' AS TEST_RESULT FROM INFORMATION_SCHEMA.PROCESSLIST WHERE time < 0;
+TEST_RESULT
+OK
+SET TIMESTAMP=DEFAULT;
 End of 5.1 tests.

mysql-test/t/information_schema.test

@@ -1410,6 +1410,15 @@ CREATE TABLE t1(a INT) KEY_BLOCK_SIZE=1;
 SELECT CREATE_OPTIONS FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME='t1';
 DROP TABLE t1;
 
+#
+# Bug #22047: Time in SHOW PROCESSLIST for SQL thread in replication seems
+# to become negative
+#
+
+SET TIMESTAMP=@@TIMESTAMP + 10000000;
+SELECT 'OK' AS TEST_RESULT FROM INFORMATION_SCHEMA.PROCESSLIST WHERE time < 0;
+SET TIMESTAMP=DEFAULT;
+
 --echo End of 5.1 tests.
 
 # Wait till all disconnects are completed

sql/sql_show.cc

@@ -1704,7 +1704,8 @@ void mysqld_list_processes(THD *thd,const char *user, bool verbose)
   field_list.push_back(field=new Item_empty_string("db",NAME_CHAR_LEN));
   field->maybe_null=1;
   field_list.push_back(new Item_empty_string("Command",16));
-  field_list.push_back(new Item_return_int("Time",7, MYSQL_TYPE_LONG));
+  field_list.push_back(field= new Item_return_int("Time",7, MYSQL_TYPE_LONG));
+  field->unsigned_flag= 0;
   field_list.push_back(field=new Item_empty_string("State",30));
   field->maybe_null=1;
   field_list.push_back(field=new Item_empty_string("Info",max_query_length));
@@ -1797,7 +1798,7 @@ void mysqld_list_processes(THD *thd,const char *user, bool verbose)
     else
       protocol->store(command_name[thd_info->command].str, system_charset_info);
     if (thd_info->start_time)
-      protocol->store((uint32) (now - thd_info->start_time));
+      protocol->store_long ((longlong) (now - thd_info->start_time));
     else
       protocol->store_null();
     protocol->store(thd_info->state_info, system_charset_info);
@@ -1872,8 +1873,8 @@ int fill_schema_processlist(THD* thd, TABLE_LIST* tables, COND* cond)
         table->field[4]->store(command_name[tmp->command].str,
                                command_name[tmp->command].length, cs);
       /* MYSQL_TIME */
-      table->field[5]->store((uint32)(tmp->start_time ?
-                                      now - tmp->start_time : 0), TRUE);
+      table->field[5]->store((longlong)(tmp->start_time ?
+                                      now - tmp->start_time : 0), FALSE);
       /* STATE */
 #ifndef EMBEDDED_LIBRARY
       val= (char*) (tmp->locked ? "Locked" :
@@ -6558,7 +6559,7 @@ ST_FIELD_INFO processlist_fields_info[]=
    SKIP_OPEN_TABLE},
   {"DB", NAME_CHAR_LEN, MYSQL_TYPE_STRING, 0, 1, "Db", SKIP_OPEN_TABLE},
   {"COMMAND", 16, MYSQL_TYPE_STRING, 0, 0, "Command", SKIP_OPEN_TABLE},
-  {"TIME", 7, MYSQL_TYPE_LONGLONG, 0, 0, "Time", SKIP_OPEN_TABLE},
+  {"TIME", 7, MYSQL_TYPE_LONG, 0, 0, "Time", SKIP_OPEN_TABLE},
   {"STATE", 64, MYSQL_TYPE_STRING, 0, 1, "State", SKIP_OPEN_TABLE},
   {"INFO", PROCESS_LIST_INFO_WIDTH, MYSQL_TYPE_STRING, 0, 1, "Info",
    SKIP_OPEN_TABLE},