bk commit into 5.0 tree (gni:1.2259) BUG#18676

[gni]

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5.0 repository of root. When root does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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ChangeSet@stripped, 2006-11-29 15:15:30+08:00, gni@dev3-127.(none) +4 -0
  BUG#18676 when cluster stoage engine is down, mysqld can't normally create talbe with
other storage engine. 

  mysql-test/r/ndb_autodiscover.result@stripped, 2006-11-29 15:15:25+08:00,
gni@dev3-127.(none) +1 -1
    changes ndbd error code to mysqld error code for cluster failure

  sql/ha_ndbcluster.cc@stripped, 2006-11-29 15:15:25+08:00, gni@dev3-127.(none) +2 -0
    mapping ndbd error code for cluster storage engine into mysql error code, and adding
return error string from ndbapi

  sql/handler.cc@stripped, 2006-11-29 15:15:25+08:00, gni@dev3-127.(none) +15 -4
    making return value more meaningful

  sql/sql_table.cc@stripped, 2006-11-29 15:15:25+08:00, gni@dev3-127.(none) +17 -6
    if return value isn't HA_ERR_NO_SUCH_TABLE or HA_ERR_TABLE_EXIST, it has meanings just
only for cluster storage engine in 5.0 version.
    So we shouldn't simply believe the table has been created for local storage engines.

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	gni
# Host:	dev3-127.(none)
# Root:	/mnt/mysql/home/ngb/mysql-5.0/bug18676

--- 1.217/sql/handler.cc	2006-11-29 15:16:34 +08:00
+++ 1.218/sql/handler.cc	2006-11-29 15:16:34 +08:00
@@ -2413,22 +2413,33 @@ ha_find_files(THD *thd,const char *db,co
   Ask handler if the table exists in engine
 
   RETURN
-    0                   Table does not exist
-    1                   Table exists
-    #                   Error code
+    HA_ERR_NO_SUCH_TABLE     Table does not exist
+    HA_ERR_TABLE_EXIST       Table exists
+    #                        Error code
 
  */
 int ha_table_exists_in_engine(THD* thd, const char* db, const char* name)
 {
   int error= 0;
+  int retval;
   DBUG_ENTER("ha_table_exists_in_engine");
   DBUG_PRINT("enter", ("db: %s, name: %s", db, name));
 #ifdef HAVE_NDBCLUSTER_DB
   if (have_ndbcluster == SHOW_OPTION_YES)
     error= ndbcluster_table_exists_in_engine(thd, db, name);
 #endif
+  switch(error){
+    case 0:
+      retval = HA_ERR_NO_SUCH_TABLE;
+      break;
+    case 1:
+      retval = HA_ERR_TABLE_EXIST;
+      break;
+    default:
+      retval = error;
+  }
   DBUG_PRINT("exit", ("error: %d", error));
-  DBUG_RETURN(error);
+  DBUG_RETURN(retval);
 }
 
 

--- 1.320/sql/sql_table.cc	2006-11-29 15:16:35 +08:00
+++ 1.321/sql/sql_table.cc	2006-11-29 15:16:35 +08:00
@@ -1711,14 +1711,25 @@ bool mysql_create_table(THD *thd,const c
   {
     bool create_if_not_exists =
       create_info->options & HA_LEX_CREATE_IF_NOT_EXISTS;
-    if (ha_table_exists_in_engine(thd, db, table_name))
+    int retcode = ha_table_exists_in_engine(thd, db, table_name);
+    switch (retcode)
     {
-      DBUG_PRINT("info", ("Table with same name already existed in handler"));
+      case HA_ERR_NO_SUCH_TABLE:               //do nothing
+        break;              
+      case HA_ERR_TABLE_EXIST:                //table has already existed  
+        DBUG_PRINT("info", ("Table with same name already existed in handler"));
 
-      if (create_if_not_exists)
-        goto warn;
-      my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
-      goto end;
+        if (create_if_not_exists)
+          goto warn;
+        my_error(ER_TABLE_EXISTS_ERROR,MYF(0),table_name);
+        goto end;
+        break;
+      default:           //only when ndbcluster engine fails, it can arrive here
+        if (create_info->db_type == DB_TYPE_NDBCLUSTER){
+          DBUG_PRINT("info", ("A error about storage engine occurs"));
+          my_error(HA_ERR_NO_CONNECTION, MYF(0),table_name);
+          goto end;
+        }
     }
   }
 

--- 1.26/mysql-test/r/ndb_autodiscover.result	2006-11-29 15:16:35 +08:00
+++ 1.27/mysql-test/r/ndb_autodiscover.result	2006-11-29 15:16:35 +08:00
@@ -382,7 +382,7 @@ create table t1 (a int primary key) engi
 select * from t1;
 a
 select * from t1;
-ERROR HY000: Can't lock file (errno: 4009)
+ERROR HY000: Can't lock file (errno: 157)
 use test;
 drop database test_only_ndb_tables;
 CREATE TABLE t9 (

--- 1.279/sql/ha_ndbcluster.cc	2006-11-29 15:16:35 +08:00
+++ 1.280/sql/ha_ndbcluster.cc	2006-11-29 15:16:35 +08:00
@@ -204,6 +204,8 @@ static const err_code_mapping err_map[]=
 
   { 284, HA_ERR_TABLE_DEF_CHANGED, 0 },
 
+  {4009, HA_ERR_NO_CONNECTION, 1 },
+
   { 0, 1, 0 },
 
   { -1, -1, 1 }