logbuffer table provides information on
NDB Cluster log buffer usage.
The following table provides information about the columns in
logbuffers table. For each column, the
table shows the name, data type, and a brief description.
Table 22.388 Columns in the logbuffers table
||integer||The ID of this data node.|
||string||Type of log. One of:
||integer||The log ID.|
||integer||The log part number.|
||integer||Total space available for this log.|
||integer||Space used by this log.|
logbuffers table rows reflecting two
additional log types are available when performing an NDB
backup. One of these rows has the log type
BACKUP-DATA, which shows the amount of data
buffer used during backup to copy fragments to backup files. The
other row has the log type
displays the amount of log buffer used during the backup to
record changes made after the backup has started. One each of
log_type rows is shown in the
logbuffers table for each data node in the
cluster. These rows are not present unless an NDB backup is
currently being performed.