ndb_restore — Restore an NDB Cluster Backup Cause  ndb_restore  to output its log to  stdout . Print all metadata to  stdout . Log SQL statements to  stdout . Use the option to enable; normally this behavior is disabled. The option checks before attempting to log whether all the tables being restored have explicitly defined primary keys; queries on a table having only the hidden primary key implemented by  NDB  cannot be converted to valid SQL. This option does not work with tables having  BLOB  columns. Print a status report each  N  seconds while the backup is in progress. 0 (the default) causes no status reports to be printed. The maximum is 65535. ndb_restore  supports limited  attribute promotion  in much the same way that it is supported by MySQL replication; that is, data backed up from a column of a given type can generally be restored to a column using a “larger, similar”  type. For example, data from a  CHAR(20)  column can be restored to a column declared as  VARCHAR(20) ,  VARCHAR(30) , or  CHAR(30) ; data from a  MEDIUMINT  column can be • --print-meta • print-sql-log • --progress-frequency = N • --promote-attributes ,  -A 4386 Type Boolean Default Value FALSE Command-Line Format --print-meta Type Boolean Default Value FALSE Command-Line Format --print-sql-log Type Boolean Default Value FALSE Command-Line Format --progress-frequency=# Type Numeric Default Value 0 Minimum Value 0 Maximum Value 65535 Command-Line Format --promote-attributes