added variable NDB_MGM to be able to run the management client in tests

    added testcase for Bug#8035
    added option to wait for not-started
    Bug#8035


mysql-test/mysql-test-run.sh:
  added variable NDB_MGM to be able to run the management client in tests
mysql-test/r/ndb_autodiscover.result:
  added testcase for Bug#8035
mysql-test/t/ndb_autodiscover.test:
  added testcase for Bug#8035
ndb/tools/waiter.cpp:
  added option to wait for not-started
sql/lock.cc:
  Bug#8035

mysql-test/mysql-test-run.sh

@@ -540,6 +540,7 @@ if [ x$SOURCE_DIST = x1 ] ; then
  INSTALL_DB="./install_test_db"
  MYSQL_FIX_SYSTEM_TABLES="$BASEDIR/scripts/mysql_fix_privilege_tables"
  NDB_TOOLS_DIR="$BASEDIR/ndb/tools"
+ NDB_MGM="$BASEDIR/ndb/src/mgmclient/ndb_mgm"
 else
  if test -x "$BASEDIR/libexec/mysqld"
  then
@@ -566,6 +567,7 @@ else
  INSTALL_DB="./install_test_db --bin"
  MYSQL_FIX_SYSTEM_TABLES="$CLIENT_BINDIR/mysql_fix_privilege_tables"
  NDB_TOOLS_DIR="$CLIENT_BINDIR"
+ NDB_MGM="$CLIENT_BINDIR/ndb_mgm"
  if test -d "$BASEDIR/share/mysql/english"
  then
    LANGUAGE="$BASEDIR/share/mysql/english/"
@@ -615,6 +617,7 @@ MYSQL="$MYSQL --host=localhost --port=$MASTER_MYPORT --socket=$MASTER_MYSOCK --u
 export MYSQL MYSQL_DUMP MYSQL_BINLOG MYSQL_FIX_SYSTEM_TABLES
 export CLIENT_BINDIR TESTS_BINDIR CHARSETSDIR
 export NDB_TOOLS_DIR
+export NDB_MGM
 
 MYSQL_TEST_ARGS="--no-defaults --socket=$MASTER_MYSOCK --database=$DB \
  --user=$DBUSER --password=$DBPASSWD --silent -v --skip-safemalloc \

mysql-test/r/ndb_autodiscover.result

@@ -359,6 +359,16 @@ information_schema
 mysql
 test
 use test;
+drop database if exists test_only_ndb_tables;
+create database test_only_ndb_tables;
+use test_only_ndb_tables;
+create table t1 (a int primary key) engine=ndb;
+select * from t1;
+a
+select * from t1;
+ERROR HY000: Can't lock file (errno: 4009)
+use test;
+drop database test_only_ndb_tables;
 CREATE TABLE t9 (
 a int NOT NULL PRIMARY KEY,
 b int

mysql-test/t/ndb_autodiscover.test

@@ -452,6 +452,26 @@ drop database test2;
 show databases;
 use test;
 
+#########################################################
+# Bug#8035
+# mysqld would segfault on second select * before bug was fixed
+#
+--disable_warnings
+drop database if exists test_only_ndb_tables;
+--enable_warnings
+create database test_only_ndb_tables;
+use test_only_ndb_tables;
+create table t1 (a int primary key) engine=ndb;
+select * from t1;
+--exec $NDB_MGM --no-defaults -e "all restart -n" > /dev/null
+--exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults --not-started > /dev/null
+--error 1015
+select * from t1;
+--exec $NDB_MGM --no-defaults -e "all start" > /dev/null
+--exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults > /dev/null
+use test;
+drop database test_only_ndb_tables;
+
 ######################################################
 # Note! This should always be the last step in this 
 # file, the table t9 will be used and dropped 

ndb/tools/waiter.cpp

@@ -31,11 +31,13 @@ waitClusterStatus(const char* _addr, ndb_mgm_node_status _status,
 		  unsigned int _timeout);
 
 enum ndb_waiter_options {
-  NDB_STD_OPTS_OPTIONS
+  NDB_STD_OPTS_OPTIONS,
+  OPT_WAIT_STATUS_NOT_STARTED
 };
 NDB_STD_OPTS_VARS;
 
 static int _no_contact = 0;
+static int _not_started = 0;
 static int _timeout = 120;
 static struct my_option my_long_options[] =
 {
@@ -43,6 +45,9 @@ static struct my_option my_long_options[] =
   { "no-contact", 'n', "Wait for cluster no contact",
     (gptr*) &_no_contact, (gptr*) &_no_contact, 0,
     GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 }, 
+  { "not-started", OPT_WAIT_STATUS_NOT_STARTED, "Wait for cluster not started",
+    (gptr*) &_not_started, (gptr*) &_not_started, 0,
+    GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0 }, 
   { "timeout", 't', "Timeout to wait",
     (gptr*) &_timeout, (gptr*) &_timeout, 0,
     GET_INT, REQUIRED_ARG, 120, 0, 0, 0, 0, 0 }, 
@@ -91,12 +96,22 @@ int main(int argc, char** argv){
   if (_hostName == 0)
     _hostName= opt_connect_str;
 
-  if (_no_contact) {
-    if (waitClusterStatus(_hostName, NDB_MGM_NODE_STATUS_NO_CONTACT, _timeout) != 0)
-      return NDBT_ProgramExit(NDBT_FAILED);
-  } else if (waitClusterStatus(_hostName, NDB_MGM_NODE_STATUS_STARTED, _timeout) != 0)
-    return NDBT_ProgramExit(NDBT_FAILED);
+  enum ndb_mgm_node_status wait_status;
+  if (_no_contact)
+  {
+    wait_status= NDB_MGM_NODE_STATUS_NO_CONTACT;
+  }
+  else if (_not_started)
+  {
+    wait_status= NDB_MGM_NODE_STATUS_NOT_STARTED;
+  }
+  else 
+  {
+    wait_status= NDB_MGM_NODE_STATUS_STARTED;
+  }
 
+  if (waitClusterStatus(_hostName, wait_status, _timeout) != 0)
+    return NDBT_ProgramExit(NDBT_FAILED);
   return NDBT_ProgramExit(NDBT_OK);
 }
 

sql/lock.cc

@@ -182,12 +182,12 @@ static int lock_external(THD *thd, TABLE **tables, uint count)
 
     if ((error=(*tables)->file->external_lock(thd,lock_type)))
     {
+      print_lock_error(error, (*tables)->file->table_type());
       for (; i-- ; tables--)
       {
 	(*tables)->file->external_lock(thd, F_UNLCK);
 	(*tables)->current_lock=F_UNLCK;
       }
-      print_lock_error(error, (*tables)->file->table_type());
       DBUG_RETURN(error);
     }
     else
@@ -375,12 +375,13 @@ static int unlock_external(THD *thd, TABLE **table,uint count)
     {
       (*table)->current_lock = F_UNLCK;
       if ((error=(*table)->file->external_lock(thd, F_UNLCK)))
+      {
 	error_code=error;
+	print_lock_error(error_code, (*table)->file->table_type());
+      }
     }
     table++;
   } while (--count);
-  if (error_code)
-    print_lock_error(error_code, (*table)->file->table_type());
   DBUG_RETURN(error_code);
 }