> On 01/15/2010 02:46 PM, Oleksiy Stashok wrote:
>>
>>> no, even don't know about them. Is there a documentation available
>>> (except source code)?
>> It's one of the approaches to process I/O events on NIO Connection.
>> By default it's disabled, but from exception stacktrace you sent -
>> it looks like it's enabled in your testcase.
>> You can check it by calling controller.useLeaderFollowerStrategy().
>> How often do you this exception? Is it reproducible?
>
> Since restart haven't seen it yet ( > 24h ). Unfortunately, I cant
> say how many requsts
> was processed (probably have to build a JMX bean). But it's a NFS
> server mounted on
> ~1000 clients.
I see.
If you can - pls. check Controller, whether it uses LeaderFollower or
not?
Thanks.
Alexey.
>>
>>>
>>> On 01/15/2010 01:15 PM, Oleksiy Stashok wrote:
>>>> Tigran,
>>>>
>>>> have you configured controller to use Leader/Follower feature?
>>>>
>>>> Alexey.
>>>>
>>>> On Jan 15, 2010, at 13:00 , Tigran Mkrtchyan wrote:
>>>>
>>>>> Hi Alexey,
>>>>>
>>>>> On 01/15/2010 12:04 PM, Oleksiy Stashok wrote:
>>>>>> Hi Tigran,
>>>>>>
>>>>>> I'd probably need more details on that.
>>>>>> Do you know what was the reason of OOM?
>>>>>
>>>>> I hope wrong config option. It looks like we need 3 GB of memory
>>>>> while only 1GB was configured.
>>>>> Since config change looks more stable.
>>>>>
>>>>>> ConcurrentModificationException exception occurred after you
>>>>>> got OOM during server stopping?
>>>>> ConcurrentModificationException occurred after OOM. There was
>>>>> some others as well. In addition
>>>>> UDP listener was gone and probably clients as well:
>>>>>
>>>>> java.nio.channels.ClosedChannelException
>>>>> at
>>>>> sun
>>>>> .nio.ch.DatagramChannelImpl.ensureOpen(DatagramChannelImpl.java:
>>>>> 107)
>>>>> at
>>>>> sun.nio.ch.DatagramChannelImpl.send(DatagramChannelImpl.java:216)
>>>>> at
>>>>> com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:
>>>>> 295)
>>>>> at
>>>>> com.sun.grizzly.util.OutputWriter.flushChannel(OutputWriter.java:
>>>>> 256)
>>>>>
>>>>> But OOM was the first one.
>>>>>
>>>>> Regards,
>>>>> Tigran.
>>>>>
>>>>>>
>>>>>> Thanks.
>>>>>>
>>>>>> WBR,
>>>>>> Alexey.
>>>>>>
>>>>>> On Jan 15, 2010, at 9:17 , Tigran Mkrtchyan wrote:
>>>>>>
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>>
>>>>>>> java.util.ConcurrentModificationException
>>>>>>> at java.util.HashMap$HashIterator.nextEntry(HashMap.java:
>>>>>>> 793)
>>>>>>> at java.util.HashMap$KeyIterator.next(HashMap.java:828)
>>>>>>> at
>>>>>>> com
>>>>>>> .sun
>>>>>>> .grizzly
>>>>>>> .SelectorHandlerRunner
>>>>>>> .handleSelectedKeys(SelectorHandlerRunner.java:255)
>>>>>>> at
>>>>>>> com
>>>>>>> .sun
>>>>>>> .grizzly
>>>>>>> .SelectorHandlerRunner
>>>>>>> .continueSelect(SelectorHandlerRunner.java:154)
>>>>>>> at
>>>>>>> com
>>>>>>> .sun
>>>>>>> .grizzly.SelectorHandlerRunner.run(SelectorHandlerRunner.java:
>>>>>>> 114)
>>>>>>> at com.sun.grizzly.util.FixedThreadPool
>>>>>>> $BasicWorker.dowork(FixedThreadPool.java:379)
>>>>>>> at com.sun.grizzly.util.FixedThreadPool
>>>>>>> $BasicWorker.run(FixedThreadPool.java:360)
>>>>>>> at java.lang.Thread.run(Thread.java:619)
>>>>>>>
>>>>>>>
>>>>>>> This is grizzly 1.9.19-SNAPSHOT. The exception popup after we
>>>>>>> got out of memory exception.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Tigran.
>>>>>>>
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>