Steven, You may be able to get information via the lsof command as to what process(es) are using many file handles (if that is the cause).
I searched for that particular error and found this GH issue: https://github.com/emqtt/emqttd/issues/426 Which directed me to this page: https://github.com/emqtt/emqttd/wiki/linux-kernel-tuning Basho also has a set of recommended tuning parameters: http://docs.basho.com/riak/kv/2.2.0/using/performance/ Do you have other error entries in any of Riak's logs at around the same time as these messages? Particularly crash.log. -- Luke Bakken Engineer [email protected] On Thu, Jan 26, 2017 at 4:42 AM, Steven Joseph <[email protected]> wrote: > Hi Shaun, > > I have already set this to a very high value > > ([email protected])1> os:cmd("ulimit -n"). > "20000500\n" > ([email protected])2> > > > So the issue is not that the limit is low, but maybe a resource leak ? As I > mentioned our application processes continuously run queries on the cluster. > > Kind Regards > > Steven _______________________________________________ riak-users mailing list [email protected] http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
