do not log the drop internal temporary tables into the binary log

mark killed partially completed updates with an error code in binlog
stop replication if the master reports a possible partial/killed update
test partially killed update

.bzrignore

@@ -236,3 +236,11 @@ support-files/mysql.server
 support-files/mysql.spec
 tags
 tmp/*
+bdb/btree/btree_auto.c
+bdb/build_vxworks/db_int.h
+bdb/build_win32/db_int.h
+bdb/build_win32/include.tcl
+bdb/build_win32/libdb.rc
+bdb/db/crdel_auto.c
+bdb/db/db_auto.c
+bdb/dist/config.hin

mysql-test/r/rpl000001.result

@@ -3,3 +3,11 @@ n
 2
 sum(length(word))
 71
+(@id := id) - id
+0
+Master_Host	Master_User	Master_Port	Connect_retry	Log_File	Pos	Slave_Running	Replicate_do_db	Replicate_ignore_db	Last_errno	Last_error	Skip_counter
+127.0.0.1	root	9306	1	master-bin.001	1729584	No			1053	Slave: query ' update t1 set n = n + 1' partially completed on the master and was aborted. There is a chance that your master is inconsistent at this point. If you are sure that your master is ok, run this query manually on the slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1; SLAVE START;	0
+count(*)
+30000
+n
+3456

mysql-test/r/rpl000012.result

@@ -2,6 +2,8 @@ n
 1
 2
 3
+100
+101
 4
 5
 6

mysql-test/t/rpl000001.test

@@ -20,4 +20,46 @@ drop table t1;
 save_master_pos;
 connection slave;
 sync_with_master;
+#test handling of aborted connection in the middle of update
+connection master;
+drop table if exists t1,t2;
+create table t1(n int);
+let $1=30000;
+while ($1)
+{
+ eval insert into t1 values($1);
+ dec $1;
+}
+create table t2(id int);
+insert into t2 values(connection_id());
+save_master_pos;
+send update t1 set n = n + 1;
+connection master1;
+select (@id := id) - id from t2;
+sleep 0.1;
+kill @id;
+drop table t2;
+connection master;
+--error 1053;
+reap;
+connection slave;
+sync_with_master ;
+show slave status;
+set sql_slave_skip_counter=1;
+slave start;
+select count(*) from t1;
+connection master1;
+drop table t1;
+create table t1 (n int);
+insert into t1 values(3456);
+save_master_pos;
+connection slave;
+sync_with_master;
+select n from t1;
+connection master1;
+drop table t1;
+save_master_pos;
+connection slave;
+sync_with_master;
+
 

mysql-test/t/rpl000012.test

 source include/master-slave.inc;
 connection master;
-drop table if exists t1,t2;
+drop table if exists t1,t2,t3;
 
 create table t2 (n int);
 create temporary table t1 (n int);
 insert into t1 values(1),(2),(3);
 insert into t2 select * from t1;
+drop table if exists test.t3;
+create temporary table test.t3 (n int not null);
+alter table test.t3 add primary key(n);
+insert into t3 values (100);
+insert into t2 select * from t3;
+drop table if exists test.t3;
+insert into t2 values (101);
 connection master1;
 create temporary table t1 (n int);
 insert into t1 values (4),(5);

sql/log_event.h

@@ -136,7 +136,7 @@ public:
   Query_log_event(THD* thd_arg, const char* query_arg, bool using_trans=0):
     Log_event(thd_arg->start_time,0,1,thd_arg->server_id), data_buf(0),
     query(query_arg),  db(thd_arg->db), q_len(thd_arg->query_length),
-    error_code(thd_arg->net.last_errno),
+    error_code(thd_arg->killed ? ER_SERVER_SHUTDOWN: thd_arg->net.last_errno),
     thread_id(thd_arg->thread_id), thd(thd_arg),
     cache_stmt(using_trans &&
 	       (thd_arg->options & (OPTION_NOT_AUTO_COMMIT | OPTION_BEGIN)))

sql/slave.cc

@@ -59,6 +59,8 @@ static int request_table_dump(MYSQL* mysql, char* db, char* table);
 static int create_table_from_dump(THD* thd, NET* net, const char* db,
 				  const char* table_name);
 inline char* rewrite_db(char* db);
+static int check_expected_error(THD* thd, int expected_error);
+
 static void free_table_ent(TABLE_RULE_ENT* e)
 {
   my_free((gptr) e, MYF(0));
@@ -834,6 +836,27 @@ server_errno=%d)",
   return len - 1;   
 }
 
+static int check_expected_error(THD* thd, int expected_error)
+{
+  switch(expected_error)
+    {
+    case ER_NET_READ_ERROR:
+    case ER_NET_ERROR_ON_WRITE:  
+    case ER_SERVER_SHUTDOWN:  
+    case ER_NEW_ABORTING_CONNECTION:
+      my_snprintf(last_slave_error, sizeof(last_slave_error), 
+		 "Slave: query '%s' partially completed on the master \
+and was aborted. There is a chance that your master is inconsistent at this \
+point. If you are sure that your master is ok, run this query manually on the\
+ slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1;\
+ SLAVE START;", thd->query);
+      last_slave_errno = expected_error;
+      sql_print_error(last_slave_error);
+      return 1;
+    default:
+      return 0;
+    }
+}
 
 static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 {
@@ -883,8 +906,13 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	thd->net.last_errno = 0;
 	thd->net.last_error[0] = 0;
 	thd->slave_proxy_id = qev->thread_id;	// for temp tables
+	
+	// sanity check to make sure the master did not get a really bad
+	// error on the query
+	if(!check_expected_error(thd, (expected_error = qev->error_code)))
+	  {
 	    mysql_parse(thd, thd->query, q_len);
-	if ((expected_error = qev->error_code) !=
+	    if (expected_error !=
 		(actual_error = thd->net.last_errno) && expected_error)
 	      {
 		const char* errmsg = "Slave: did not get the expected error\
@@ -901,6 +929,17 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 		last_slave_errno = 0;
 	      }
 	  }
+	else // master could be inconsistent, abort and tell DBA to
+	  //    check/fix it
+	  {
+	    thd->db = thd->query = 0;
+	    thd->convert_set = 0;
+	    close_thread_tables(thd);
+            free_root(&thd->mem_root,0);
+	    delete ev;
+	    return 1;
+	  }
+      }
       thd->db = 0;				// prevent db from being freed
       thd->query = 0;				// just to be sure
       // assume no convert for next query unless set explictly

sql/sql_base.cc

@@ -497,13 +497,14 @@ void close_temporary_tables(THD *thd)
   TABLE *table,*next;
   uint init_query_buf_size = 11, query_buf_size; // "drop table "
   char* query, *p;
+  bool found_user_tables = 0;
+  
   LINT_INIT(p);
   query_buf_size = init_query_buf_size;
 
   for (table=thd->temporary_tables ; table ; table=table->next)
   {
     query_buf_size += table->key_length;
-
   }
 
   if(query_buf_size == init_query_buf_size)
@@ -518,16 +519,21 @@ void close_temporary_tables(THD *thd)
   for (table=thd->temporary_tables ; table ; table=next)
   {
     if(query) // we might be out of memory, but this is not fatal
+      {
+	// skip temporary tables not created directly by the user
+	if(table->table_name[0] != '#')
 	  {
 	    p = strxmov(p,table->table_cache_key,".",
 		    table->table_name,",", NullS);
 	    // here we assume table_cache_key always starts
 	    // with \0 terminated db name
+	    found_user_tables = 1;
+	  }
       }
     next=table->next;
     close_temporary(table);
   }
-  if (query && mysql_bin_log.is_open())
+  if (query && found_user_tables && mysql_bin_log.is_open())
   {
     uint save_query_len = thd->query_length;
     *--p = 0;