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From Lahiru Sandaruwan <lahi...@wso2.com>
Subject Re: CEP seems to be emiting stats even though there are no incoming requests...
Date Sun, 12 Jan 2014 14:18:32 GMT
Yep, Agree with you guys.. will make this log debug..


On Sun, Jan 12, 2014 at 12:39 PM, Nirmal Fernando <nirmal070125@gmail.com>wrote:

> Hi All,
>
> Will someone get concerned after seen a warning or an error, in this case?
> IMO if this is of no harm and not require any attention, we could just make
> it a debug log. But it really depends on the scenario and we need to
> examine.
>
>
> On Sat, Jan 11, 2014 at 11:49 PM, Lahiru Sandaruwan <lahirus@wso2.com>wrote:
>
>>
>>
>>
>> On Sat, Jan 11, 2014 at 11:22 PM, Isuru Perera <isurup@wso2.com> wrote:
>>
>>> Then I think you can just log a warning message instead of logging an
>>> error message with stack trace.
>>>
>>>
>> +1 for getting rid of stack trace... IMO it should be an error level
>> log...
>>
>>
>>>
>>> On Sat, Jan 11, 2014 at 11:13 PM, Lahiru Sandaruwan <lahirus@wso2.com>wrote:
>>>
>>>>
>>>>
>>>>
>>>> On Sat, Jan 11, 2014 at 10:46 PM, Nirmal Fernando <
>>>> nirmal070125@gmail.com> wrote:
>>>>
>>>>> There's a possibility that CEP would emit an event in this scenario
>>>>> (since CEP aggregates events came in a specific time period). This cannot
>>>>> be solved at CEP end, I think the solution would be to discard events
that
>>>>> are not relevant at Auto-scaler end. Wdyt?
>>>>>
>>>>
>>>> Yeah. Actually it happens already. Since the cluster monitor is not
>>>> there, it just prints this error message..
>>>>
>>>>>
>>>>>
>>>>> On Sat, Jan 11, 2014 at 10:11 PM, Lahiru Sandaruwan <lahirus@wso2.com>wrote:
>>>>>
>>>>>> $subject.
>>>>>>
>>>>>> For e.g. there is no instances in the cluster
>>>>>> "lahiru123.isuruh.lk.php.domain " since the user has unsubscribed.
>>>>>> But Autoscaler has received a stat event [1]..
>>>>>>
>>>>>> [1]
>>>>>> TID: [0] [Agent] [2014-01-11 16:34:39,696] ERROR
>>>>>> {org.apache.stratos.autoscaler.message.receiver.health.AutoscalerHealthStatReceiver}
>>>>>> -  A cluster monitor is not found in autoscaler context [cluster]
>>>>>> lahiru123.isuruh.lk.php.domain
>>>>>> {org.apache.stratos.autoscaler.message.receiver.health.AutoscalerHealthStatReceiver}
>>>>>> TID: [0] [Agent] [2014-01-11 16:34:39,696] ERROR
>>>>>> {org.apache.stratos.messaging.message.receiver.health.stat.HealthStatEventMessageDelegator}
>>>>>> -  Failed to retrieve instance notifier event message
>>>>>> {org.apache.stratos.messaging.message.receiver.health.stat.HealthStatEventMessageDelegator}
>>>>>> java.lang.RuntimeException: A monitor is not found for this cluster
>>>>>> at
>>>>>> org.apache.stratos.autoscaler.message.receiver.health.AutoscalerHealthStatReceiver.handleMemberFaultEvent(AutoscalerHealthStatReceiver.java:1084)
>>>>>>  at
>>>>>> org.apache.stratos.autoscaler.message.receiver.health.AutoscalerHealthStatReceiver.access$300(AutoscalerHealthStatReceiver.java:49)
>>>>>> at
>>>>>> org.apache.stratos.autoscaler.message.receiver.health.AutoscalerHealthStatReceiver$9.onEvent(AutoscalerHealthStatReceiver.java:753)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.listener.EventListener.update(EventListener.java:42)
>>>>>> at java.util.Observable.notifyObservers(Observable.java:142)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.event.EventObservable.notifyEventListeners(EventObservable.java:51)
>>>>>> at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberFaultMessageProcessor.process(MemberFaultMessageProcessor.java:50)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.SecondDerivativeOfMemoryConsumptionMessageProcessor.process(SecondDerivativeOfMemoryConsumptionMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.GradientOfMemoryConsumptionMessageProcessor.process(GradientOfMemoryConsumptionMessageProcessor.java:58)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.AverageMemoryConsumptionMessageProcessor.process(AverageMemoryConsumptionMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.SecondDerivativeOfLoadAverageMessageProcessor.process(SecondDerivativeOfLoadAverageMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.GradientOfLoadAverageMessageProcessor.process(GradientOfLoadAverageMessageProcessor.java:59)
>>>>>> at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.AverageLoadAverageMessageProcessor.process(AverageLoadAverageMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.SecondDerivativeOfRequestsInFlightMessageProcessor.process(SecondDerivativeOfRequestsInFlightMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.GradientOfRequestsInFlightMessageProcessor.process(GradientOfRequestsInFlightMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.AverageRequestsInFlightMessageProcessor.process(AverageRequestsInFlightMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberSecondDerivativeOfMemoryConsumptionMessageProcessor.process(MemberSecondDerivativeOfMemoryConsumptionMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberGradientOfMemoryConsumptionMessageProcessor.process(MemberGradientOfMemoryConsumptionMessageProcessor.java:60)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberAverageMemoryConsumptionMessageProcessor.process(MemberAverageMemoryConsumptionMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberSecondDerivativeOfLoadAverageMessageProcessor.process(MemberSecondDerivativeOfLoadAverageMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberGradientOfLoadAverageMessageProcessor.process(MemberGradientOfLoadAverageMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.health.stat.MemberAverageLoadAverageMessageProcessor.process(MemberAverageLoadAverageMessageProcessor.java:59)
>>>>>>  at
>>>>>> org.apache.stratos.messaging.message.processor.MessageProcessorChain.process(MessageProcessorChain.java:60)
>>>>>> at
>>>>>> org.apache.stratos.messaging.message.receiver.health.stat.HealthStatEventMessageDelegator.run(HealthStatEventMessageDelegator.java:79)
>>>>>>  at java.lang.Thread.run(Thread.java:662)
>>>>>>
>>>>>>
>>>>>> --
>>>>>> --
>>>>>> Lahiru Sandaruwan
>>>>>> Software Engineer,
>>>>>> Platform Technologies,
>>>>>> WSO2 Inc., http://wso2.com
>>>>>> lean.enterprise.middleware
>>>>>>
>>>>>> email: lahirus@wso2.com cell: (+94) 773 325 954
>>>>>> blog: http://lahiruwrites.blogspot.com/
>>>>>> twitter: http://twitter.com/lahirus
>>>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Best Regards,
>>>>> Nirmal
>>>>>
>>>>> Nirmal Fernando.
>>>>> PPMC Member & Committer of Apache Stratos,
>>>>> Senior Software Engineer, WSO2 Inc.
>>>>>
>>>>> Blog: http://nirmalfdo.blogspot.com/
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> Lahiru Sandaruwan
>>>> Software Engineer,
>>>> Platform Technologies,
>>>> WSO2 Inc., http://wso2.com
>>>> lean.enterprise.middleware
>>>>
>>>> email: lahirus@wso2.com cell: (+94) 773 325 954
>>>> blog: http://lahiruwrites.blogspot.com/
>>>> twitter: http://twitter.com/lahirus
>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146
>>>>
>>>>
>>>
>>>
>>> --
>>> Isuru Perera
>>> Senior Software Engineer | WSO2, Inc. | http://wso2.com/
>>> Lean . Enterprise . Middleware
>>>
>>> about.me/chrishantha
>>>
>>
>>
>>
>> --
>> --
>> Lahiru Sandaruwan
>> Software Engineer,
>> Platform Technologies,
>> WSO2 Inc., http://wso2.com
>> lean.enterprise.middleware
>>
>> email: lahirus@wso2.com cell: (+94) 773 325 954
>> blog: http://lahiruwrites.blogspot.com/
>> twitter: http://twitter.com/lahirus
>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146
>>
>>
>
>
> --
> Best Regards,
> Nirmal
>
> Nirmal Fernando.
> PPMC Member & Committer of Apache Stratos,
> Senior Software Engineer, WSO2 Inc.
>
> Blog: http://nirmalfdo.blogspot.com/
>



-- 
--
Lahiru Sandaruwan
Software Engineer,
Platform Technologies,
WSO2 Inc., http://wso2.com
lean.enterprise.middleware

email: lahirus@wso2.com cell: (+94) 773 325 954
blog: http://lahiruwrites.blogspot.com/
twitter: http://twitter.com/lahirus
linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146

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