Description. 
          These are the log event categories referenced in
          Section 3.3.4, “The Ndb_logevent_type Type”. They are also used by
          the MGM API functions
          ndb_mgm_set_clusterlog_loglevel() and
          ndb_mgm_listen_event().
        
Enumeration values.
| Value | Description | 
|---|---|
NDB_MGM_ILLEGAL_EVENT_CATEGORY | 
Invalid log event category | 
NDB_MGM_EVENT_CATEGORY_STARTUP | 
Log events occurring during startup | 
NDB_MGM_EVENT_CATEGORY_SHUTDOWN | 
Log events occurring during shutdown | 
NDB_MGM_EVENT_CATEGORY_STATISTIC | 
Statistics log events | 
NDB_MGM_EVENT_CATEGORY_CHECKPOINT | 
Log events related to checkpoints | 
NDB_MGM_EVENT_CATEGORY_NODE_RESTART | 
Log events occurring during node restart | 
NDB_MGM_EVENT_CATEGORY_CONNECTION | 
Log events relating to connections between cluster nodes | 
NDB_MGM_EVENT_CATEGORY_BACKUP | 
Log events relating to backups | 
NDB_MGM_EVENT_CATEGORY_CONGESTION | 
Log events relating to congestion | 
NDB_MGM_EVENT_CATEGORY_INFO | 
Uncategorised log events (severity level INFO) | 
NDB_MGM_EVENT_CATEGORY_ERROR | 
Uncategorised log events (severity level WARNING,
                    ERROR,
                    CRITICAL, or
                    ALERT) | 
        See Section 3.2.7.4, “ndb_mgm_set_clusterlog_loglevel()”, and
        Section 3.2.1.1, “ndb_mgm_listen_event()”, for more
        information.
      
