Better fix for bug #791: At binlog rotation, INSERTs may not find their way into the binlog

mysql-test/t/rpl_flush_log_loop.test

@@ -14,6 +14,7 @@ slave stop;
 eval change master to master_host='127.0.0.1',master_user='root',
  master_password='',master_port=$SLAVE_MYPORT;
 slave start;
+sleep 5;
 flush logs;
 sleep 5;
 --replace_result $SLAVE_MYPORT SLAVE_PORT

sql/log.cc

@@ -109,7 +109,7 @@ void MYSQL_LOG::cleanup()
   if (inited)
   {
     inited= 0;
-    close(1);
+    close(LOG_CLOSE_INDEX);
     (void) pthread_mutex_destroy(&LOCK_log);
     (void) pthread_mutex_destroy(&LOCK_index);
     (void) pthread_cond_destroy(&update_cond);
@@ -315,6 +315,7 @@ bool MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
     break;
   }
   case LOG_CLOSED:				// Impossible
+  case LOG_TO_BE_OPENED:
     DBUG_ASSERT(1);
     break;
   }
@@ -332,7 +333,7 @@ shutdown the MySQL server and restart it.", log_name, errno);
   end_io_cache(&log_file);
   end_io_cache(&index_file);
   safeFree(name);
-  log_type=LOG_CLOSED;
+  log_type= LOG_CLOSED;
   DBUG_RETURN(1);
 }
 
@@ -565,7 +566,7 @@ bool MYSQL_LOG::reset_logs(THD* thd)
   save_name=name;
   name=0;					// Protect against free
   save_log_type=log_type;
-  close(0);					// Don't close the index file
+  close(LOG_CLOSE_TO_BE_OPENED);
 
   /* First delete all old log files */
 
@@ -583,7 +584,7 @@ bool MYSQL_LOG::reset_logs(THD* thd)
   }
 
   /* Start logging with a new file */
-  close(1);					// Close index file
+  close(LOG_CLOSE_INDEX | LOG_CLOSE_STOP_EVENT);
   my_delete(index_file_name, MYF(MY_WME));	// Reset (open will update)
   if (!thd->slave_thread)
     need_start_event=1;
@@ -865,7 +866,7 @@ void MYSQL_LOG::new_file(bool need_lock)
   old_name=name;
   save_log_type=log_type;
   name=0;				// Don't free name
-  close();
+  close(LOG_CLOSE_TO_BE_OPENED);
 
   /* 
      Note that at this point, log_type == LOG_CLOSED (important for is_open()).
@@ -1528,24 +1529,25 @@ void MYSQL_LOG:: wait_for_update(THD* thd)
 
   SYNOPSIS
     close()
-    exiting	Set to 1 if we should also close the index file
-    		This can be set to 0 if we are going to do call open
-		at once after close, in which case we don't want to
-		close the index file.
-		We only write a 'stop' event to the log if exiting is set
+    exiting	Bitmask for one or more of the following bits:
+    		LOG_CLOSE_INDEX if we should close the index file
+		LOG_CLOSE_TO_BE_OPENED if we intend to call open
+		at once after close.
+		LOG_CLOSE_STOP_EVENT write a 'stop' event to the log
 
   NOTES
     One can do an open on the object at once after doing a close.
     The internal structures are not freed until cleanup() is called
 */
 
-void MYSQL_LOG::close(bool exiting)
+void MYSQL_LOG::close(uint exiting)
 {					// One can't set log_type here!
   DBUG_ENTER("MYSQL_LOG::close");
   DBUG_PRINT("enter",("exiting: %d", (int) exiting));
   if (is_open())
   {
-    if (log_type == LOG_BIN && !no_auto_events && exiting)
+    if (log_type == LOG_BIN && !no_auto_events &&
+	(exiting & LOG_CLOSE_STOP_EVENT))
     {
       Stop_log_event s;
       s.set_log_pos(this);
@@ -1565,7 +1567,7 @@ void MYSQL_LOG::close(bool exiting)
     called a not complete close earlier and the index file is still open.
   */
 
-  if (exiting && my_b_inited(&index_file))
+  if ((exiting & LOG_CLOSE_INDEX) && my_b_inited(&index_file))
   {
     end_io_cache(&index_file);
     if (my_close(index_file.file, MYF(0)) < 0 && ! write_error)
@@ -1574,7 +1576,7 @@ void MYSQL_LOG::close(bool exiting)
       sql_print_error(ER(ER_ERROR_ON_WRITE), index_file_name, errno);
     }
   }
-  log_type= LOG_CLOSED;
+  log_type= (exiting & LOG_CLOSE_TO_BE_OPENED) ? LOG_TO_BE_OPENED : LOG_CLOSED;
   safeFree(name);
   DBUG_VOID_RETURN;
 }

sql/mysqld.cc

@@ -4210,8 +4210,8 @@ static void usage(void)
   puts("\
 Copyright (C) 2000 MySQL AB, by Monty and others\n\
 This software comes with ABSOLUTELY NO WARRANTY. This is free software,\n\
-and you are welcome to modify and redistribute it under the GPL license\n\
-Starts the MySQL server\n");
+and you are welcome to modify and redistribute it under the GPL license\n\n\
+Starts the MySQL database server\n");
 
   printf("Usage: %s [OPTIONS]\n", my_progname);
 #ifdef __WIN__

sql/slave.cc

@@ -1314,7 +1314,7 @@ file '%s')", fname);
         if (info_fd >= 0)
           my_close(info_fd, MYF(0));
         rli->info_fd= -1;
-        rli->relay_log.close(1);
+        rli->relay_log.close(LOG_CLOSE_INDEX | LOG_CLOSE_STOP_EVENT);
         pthread_mutex_unlock(&rli->data_lock);
         DBUG_RETURN(1);
       }
@@ -1374,7 +1374,7 @@ relay_log_pos=%s", rli->relay_log_name, llstr(rli->relay_log_pos, llbuf));
   if (info_fd >= 0)
     my_close(info_fd, MYF(0));
   rli->info_fd= -1;
-  rli->relay_log.close(1);
+  rli->relay_log.close(LOG_CLOSE_INDEX | LOG_CLOSE_STOP_EVENT);
   pthread_mutex_unlock(&rli->data_lock);
   DBUG_RETURN(1);
 }
@@ -2989,7 +2989,7 @@ void end_relay_log_info(RELAY_LOG_INFO* rli)
     rli->cur_log_fd = -1;
   }
   rli->inited = 0;
-  rli->relay_log.close(1);
+  rli->relay_log.close(LOG_CLOSE_INDEX | LOG_CLOSE_STOP_EVENT);
   DBUG_VOID_RETURN;
 }
 

sql/sql_class.h

@@ -30,11 +30,11 @@ class Slave_log_event;
 enum enum_enable_or_disable { LEAVE_AS_IS, ENABLE, DISABLE };
 enum enum_ha_read_modes { RFIRST, RNEXT, RPREV, RLAST, RKEY };
 enum enum_duplicates { DUP_ERROR, DUP_REPLACE, DUP_IGNORE };
-enum enum_log_type { LOG_CLOSED, LOG_NORMAL, LOG_NEW, LOG_BIN };
+enum enum_log_type { LOG_CLOSED, LOG_TO_BE_OPENED, LOG_NORMAL, LOG_NEW, LOG_BIN};
 enum enum_delay_key_write { DELAY_KEY_WRITE_NONE, DELAY_KEY_WRITE_ON,
 			    DELAY_KEY_WRITE_ALL };
 
-// log info errors 
+/* log info errors */
 #define LOG_INFO_EOF -1
 #define LOG_INFO_IO  -2
 #define LOG_INFO_INVALID -3
@@ -43,6 +43,11 @@ enum enum_delay_key_write { DELAY_KEY_WRITE_NONE, DELAY_KEY_WRITE_ON,
 #define LOG_INFO_FATAL -7
 #define LOG_INFO_IN_USE -8
 
+/* bitmap to SQL_LOG::close() */
+#define LOG_CLOSE_INDEX		1
+#define LOG_CLOSE_TO_BE_OPENED	2
+#define LOG_CLOSE_STOP_EVENT	4
+
 struct st_relay_log_info;
 
 typedef struct st_log_info
@@ -150,8 +155,7 @@ class MYSQL_LOG
   int purge_logs(THD* thd, const char* to_log);
   int purge_first_log(struct st_relay_log_info* rli); 
   bool reset_logs(THD* thd);
-  // if we are exiting, we also want to close the index file
-  void close(bool exiting = 0);
+  void close(uint exiting);
 
   // iterating through the log index file
   int find_log_pos(LOG_INFO* linfo, const char* log_name,