For how long you noticed that connections? when you say "many" do you mean
1000s? the problem with having too many syn_recv is that you could end
running out of file descriptors, which makes me wonder know what is the
maximum number of open files that you have configured for the RS process
(see all the root->hbase user->hbase proc chain of ulimits) and if there
could be a rogue client connecting to 60020 (maybe a port scanner?) and
triggering that problem.
On Fri, Jul 11, 2014 at 3:02 AM, Rural Hunter <[EMAIL PROTECTED]> wrote: