There are ongoing pings to jobtracker But 10% seems high
Sent from my iPhone > On Jun 9, 2014, at 2:15, Dmitry Sivachenko <trtrmi...@gmail.com> wrote: > > Hello! > > I set up hadoop-1.2.1 on FreeBSD-10/stable with openjdk version 1.7.0_60. > > On the first glance it is doing well except one annoying thing: after > executing some tasks, tasktracker process starts to eat CPU when idle. > Sometimes it is 10-20% (numbers from top(1) output), sometimes it is 100-150%. > > In tasktrackers's log I see numerious records like this: > > 2014-06-09 13:08:29,858 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - injecting > delay59 times > 2014-06-09 13:08:29,859 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - recreating > selector 59 times, canceled keys 944 times > 2014-06-09 13:09:29,862 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - injecting > delay58 times > 2014-06-09 13:09:29,862 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - recreating > selector 58 times, canceled keys 928 times > 2014-06-09 13:10:29,901 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - injecting > delay58 times > 2014-06-09 13:10:29,901 INFO org.mortbay.log: > org.mortbay.io.nio.SelectorManager$SelectSet@abdcc1c JVM BUG(s) - recreating > selector 58 times, canceled keys 928 times > > > Is it a known thing? Is there any workaround available? > > Thanks in advance.
