Database Reference
In-Depth Information
•
Last Checkpoint Time
: This the timestamp of the last checkpoint action per-
formed by the secondary namenode daemon.
•
Checkpoint Period
: This property defines the schedule to perform the check-
point. In the preceding screenshot, the value is
3,600 seconds
. This means that
every 3,600 seconds (1 hour), the secondary namenode daemon will perform the
checkpoint operation.
•
Checkpoint Size
: If the
edits
logfile reaches this checkpoint size, the second-
ary namenode daemon will perform the checkpoint even if the check point period
has not elapsed.
•
Checkpoint Dirs
: This is the location of the
fsimage
file stored by the second-
ary namenode daemon.
•
Checkpoint Edit Dirs
: This is the location of the
edits
logfiles stored by the
secondary namenode daemon.
