added switch to mysqld to specify connectstring

mysql-test/mysql-test-run.sh

@@ -1451,12 +1451,10 @@ then
   then
     echo "Starting ndbcluster"
     ./ndb/ndbcluster --port-base=$NDBCLUSTER_PORT --small --diskless --initial --data-dir=$MYSQL_TEST_DIR/var || exit 1
-    NDB_CONNECTSTRING="host=localhost:$NDBCLUSTER_PORT"
-    export NDB_CONNECTSTRING
+    USE_NDBCLUSTER="--ndb-connectstring=\"host=localhost:$NDBCLUSTER_PORT\""
   else
-    NDB_CONNECTSTRING="$USE_RUNNING_NDBCLUSTER"
-    export NDB_CONNECTSTRING
-    echo "Using ndbcluster at $NDB_CONNECTSTRING"
+    USE_NDBCLUSTER="--ndb-connectstring=\"$USE_RUNNING_NDBCLUSTER\""
+    echo "Using ndbcluster at $USE_NDBCLUSTER"
   fi
   fi
 

sql/ha_ndbcluster.cc

@@ -46,6 +46,9 @@ static const int max_transactions= 256;
 // Default value for prefetch of autoincrement values
 static const ha_rows autoincrement_prefetch= 32;
 
+// connectstring to cluster if given by mysqld
+const char *ndbcluster_connectstring = 0;
+
 #define NDB_HIDDEN_PRIMARY_KEY_LENGTH 8
 
 
@@ -3375,6 +3378,11 @@ int ndb_discover_tables()
 bool ndbcluster_init()
 {
   DBUG_ENTER("ndbcluster_init");
+  // Set connectstring if specified
+  if (ndbcluster_connectstring != 0) {
+    DBUG_PRINT("connectstring", ("%s", ndbcluster_connectstring));     
+    Ndb::setConnectString(ndbcluster_connectstring);
+  }
   // Create a Ndb object to open the connection  to NDB
   g_ndb= new Ndb("sys");
   if (g_ndb->init() != 0)

sql/ha_ndbcluster.h

@@ -37,6 +37,8 @@ class NdbScanOperation;
 class NdbIndexScanOperation; 
 class NdbBlob;
 
+// connectstring to cluster if given by mysqld
+extern const char *ndbcluster_connectstring;
 
 typedef enum ndb_index_type {
   UNDEFINED_INDEX = 0,

sql/mysqld.cc

@@ -3893,7 +3893,7 @@ enum options_mysqld
   OPT_INNODB_FILE_PER_TABLE, OPT_CRASH_BINLOG_INNODB,
   OPT_INNODB_LOCKS_UNSAFE_FOR_BINLOG,
   OPT_SAFE_SHOW_DB, OPT_INNODB_SAFE_BINLOG,
-  OPT_INNODB, OPT_ISAM, OPT_NDBCLUSTER, OPT_SKIP_SAFEMALLOC,
+  OPT_INNODB, OPT_ISAM, OPT_NDBCLUSTER, OPT_NDB_CONNECTSTRING, OPT_SKIP_SAFEMALLOC,
   OPT_TEMP_POOL, OPT_TX_ISOLATION,
   OPT_SKIP_STACK_TRACE, OPT_SKIP_SYMLINKS,
   OPT_MAX_BINLOG_DUMP_EVENTS, OPT_SPORADIC_BINLOG_DUMP_FAIL,
@@ -4318,6 +4318,11 @@ master-ssl",
 Disable with --skip-ndbcluster (will save memory).",
    (gptr*) &opt_ndbcluster, (gptr*) &opt_ndbcluster, 0, GET_BOOL, NO_ARG, 1, 0, 0,
    0, 0, 0},
+#ifdef HAVE_NDBCLUSTER_DB
+  {"ndb-connectstring", OPT_NDB_CONNECTSTRING, "Connect string for ndbcluster.",
+   (gptr*) &ndbcluster_connectstring, (gptr*) &ndbcluster_connectstring, 0, GET_STR,
+   REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
+#endif
   {"new", 'n', "Use very new possible 'unsafe' functions.",
    (gptr*) &global_system_variables.new_mode,
    (gptr*) &max_system_variables.new_mode,
@@ -5997,6 +6002,11 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
       have_ndbcluster=SHOW_OPTION_YES;
     else
       have_ndbcluster=SHOW_OPTION_DISABLED;
+#endif
+    break;
+  case OPT_NDB_CONNECTSTRING:
+#ifdef HAVE_NDBCLUSTER_DB
+    have_ndbcluster=SHOW_OPTION_YES;
 #endif
     break;
   case OPT_INNODB: