With mloginfo
I found a strange log entry. Didn't find anything about it in MongoDB docs and other related sites.
$ mloginfo mongodb.log --distinct
source: mongodb.log
host: example
start: 2016 Aug 25 14:57:57.630
end: 2016 Aug 26 08:02:05.751
date format: iso8601-local
length: 572308
binary: mongod
version: 3.2.8
storage: wiredTiger
DISTINCT
28069 connection accepted from ... # ... ( ... now open)
27587 end connection ... ( ... now open)
15 exception: ... on:
10 serverStatus was very slow:
4 task: ... took: ... ms
3 killcursors: found ... of
3 SocketException handling request, closing client connection:
1 git version:
1 waiting for connections on port
what is that exactly? What is a PeriodicTaskRunner
and what does UnusedLockCleaner
do? Any actions required from DBA?
2016-08-25T21:03:38.449+0200 I COMMAND [PeriodicTaskRunner] task: UnusedLockCleaner took: 105ms
2016-08-26T00:21:40.285+0200 I COMMAND [PeriodicTaskRunner] task: UnusedLockCleaner took: 184ms
2016-08-26T01:25:40.940+0200 I COMMAND [PeriodicTaskRunner] task: UnusedLockCleaner took: 273ms
2016-08-26T01:55:41.357+0200 I COMMAND [PeriodicTaskRunner] task: UnusedLockCleaner took: 234ms