Selvakumar,

so, this is nothing to do with mininet or spine-leaf then, I guess.

I tried with Beryllium 0.4.0 and installed openflowplugin-flow-services but do
not see the Exceptions.  What other features do you have installed?

also, you might want to try the latest released Beryllium (SR2 right now)

https://www.opendaylight.org/downloads



JamO



On 06/24/2016 12:33 AM, Selvakumar Murugasekaran wrote:
> Hello Jamo,
> 
> Good day to you.
> 
> Yes, the java exception error occurs only during the*logout* of controller.
> 
> Yes, reinstall mean delete the current *distribution-karaf-0.4.0-Beryllium* 
> folder and unzip the
> "*distribution-karaf-0.4.0-Beryllium.zip*" then start the controller.
> 
> Yes, I got java exception error in controller without even running the 
> mininet.
> 
> Let me know if you need any more information.
> 
> 
> Thanks and Regards,
> Selvakumar Murugasekaran.
>  
> On 6/24/2016 5:11 AM, Jamo Luhrsen wrote:
>> I don't know if this is a known issue or not, but it does seem like you are 
>> hitting a
>> scaling issue.
>>
>> I am not totally following the test flow here.  The Exception logs you gave 
>> are coming
>> as soon as mininet starts having trouble (python tracebacks) or only after 
>> you issue
>> a logout?
>>
>> I think you also said that you are getting these exceptions after a clean 
>> reinstallation
>> of ODL?  You mean, after unzipping and starting again you get the 
>> exceptions, without
>> even running the mininet test?
>>
>> Thanks,
>> JamO
>>
>> On 06/22/2016 10:08 PM, Selvakumar Murugasekaran wrote:
>>> Hello,
>>>
>>> Good day to you.
>>>
>>> I am benchmarking the "*Network Discovery Size*" of ODL beryllium 
>>> controller for spine-leaf topology using "*spine-leaf.py*"
>>> in mininet.
>>>
>>> Reference link: 
>>> https://github.com/ciena/mininet-topos/blob/master/spine_leaf.py
>>> Mininet version : 2.2.1rc1
>>>
>>> I created *1800* switch in spine-leaf.py in mininet but it's throwing error 
>>> message as following,
>>>
>>> Traceback (most recent call last):
>>>   File "./spine_leaf.py", line 157, in <module>
>>>     simpleTest(options)
>>>   File "./spine_leaf.py", line 129, in simpleTest
>>>     net.start()
>>>   File "build/bdist.linux-x86_64/egg/mininet/net.py", line 495, in start
>>>   File "build/bdist.linux-x86_64/egg/mininet/node.py", line 1207, in 
>>> batchStartup
>>>   File "build/bdist.linux-x86_64/egg/mininet/util.py", line 82, in errRun
>>>   File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
>>>     errread, errwrite)
>>>   File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child
>>>     raise child_exception
>>> OSError: [Errno 7] Argument list too long
>>>
>>> *Note*: The *spine-leaf.py* does not throw any error message upto 1720 
>>> switch's creation.
>>>
>>> After the above error message in mininet, the opendaylight controller also 
>>> throw the following java error,
>>>
>>> Exception in thread "odl-stat-collector-36-thread-0" Exception in thread 
>>> "odl-stat-collector-51-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-50-thread-0" Exception in thread 
>>> "odl-stat-collector-42-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-35-thread-0" Exception in thread 
>>> "odl-stat-collector-38-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-47-thread-0" Exception in thread 
>>> "odl-stat-collector-37-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-46-thread-0" Exception in thread 
>>> "odl-stat-collector-26-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-48-thread-0" Exception in thread 
>>> "odl-stat-collector-40-thread-0" Exception in thread
>>> "odl-stat-collector-29-thread-0" java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-30-thread-0" 
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-21-thread-0" Exception in thread 
>>> "odl-stat-collector-16-thread-0" Exception in thread
>>> "odl-stat-collector-24-thread-0" Exception in thread 
>>> "odl-stat-collector-18-thread-0" Exception in thread
>>> "odl-stat-collector-17-thread-0" java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-15-thread-0" Exception in thread 
>>> "odl-stat-collector-19-thread-0"
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-14-thread-0" 
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>> Exception in thread "odl-stat-collector-13-thread-0" 
>>> java.lang.NullPointerException
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.isThisInstanceNodeOwner(StatPermCollectorImpl.java:333)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.collectStatCrossNetwork(StatPermCollectorImpl.java:266)
>>>         at
>>> org.opendaylight.openflowplugin.applications.statistics.manager.impl.StatPermCollectorImpl.run(StatPermCollectorImpl.java:221)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>>         at 
>>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>>         at java.lang.Thread.run(Thread.java:745)
>>>
>>> After the above java error, every time the opendaylight controller throw 
>>> the same error message during the "shutdown/logout"
>>> even though we did controller PC manual reboot and controller reinstall.
>>>
>>> Could you please clarify whether this is known issue for spine-leaf 
>>> topology with beryllium controller?
>>>
>>> Let me know if you need any more information.
>>>
>>>
>>> Thanks and Regards,
>>> Selvakumar Murugasekaran.
> 
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