Backup using mysqldump and restore dump in ndbcluster environment shows errors while restoring system database 'mysql'.

[piyush nagar]

Hi ,

I have very urgent questions related to backup/restores of databases in a node of ndbcluster environment.

I used mysqldump to backup all the databases. it got successful. Now when i try to restores those db dumps, i see the error in restoring 'mysql' system database.

here are the results:

[root@IfxLinux mysql-cluster]# mysql < /tmp/my.sql
ERROR 1036 (HY000) at line 386: Table 'ndb_apply_status' is read only

error says 'ndb_apply_status' table is read only and restore halts.

even dropping 'mysql' database shows error:
system command = /usr/bin/mysql -u backup --socket=/var/lib/mysql-cluster/mysql.sock -e 'FLUSH PRIVILEGES;drop database `mysql`;' out err = ERROR 1051 (42S02) at line 1: Unknown table 'ndb_apply_status'.


Please help and advise how to resolve this. We are able to restore all other databases apart from 'mysql' database from a dump. Is there any way to drop 'ndb_apply_status' table and recreate it manually later after restore completes?

#Note: we don't want to use start backup and ndb_restore programs.

Since we are in urgency.
Any kind of help is appreciated.