On 10 июня 2014 г., at 5:58, Serge Blazhievsky <hadoop...@gmail.com> wrote:
> There are ongoing pings to jobtracker > > But 10% seems high Sometimes it is 10%, sometimes it is 200+%. Different nodes, different numbers. So pings can't explain that. > > 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.
