Hi NIranjan,

Yes, but currently we do not have a migration guide for ML. The changes
needed were minimal and hence was decided not to include a migration guide.

On Thu, Feb 18, 2016 at 12:27 PM, Niranjan Karunanandham <niran...@wso2.com>
wrote:

> Hi Fazlan,
>
> IMO we need to also mention this in the ML migration doc from 1.0.0 to
> 1.1.0.
>
> Regards,
> Nira
>
> On Thu, Feb 18, 2016 at 12:22 PM, Fazlan Nazeem <fazl...@wso2.com> wrote:
>
>> Hi Tishan,
>>
>> This is an expected behaviour since we have changed the model classes in
>> ML 1.1.0.
>>
>> @Rukshani can you please document this under [1].
>>
>> [1]
>> https://docs.wso2.com/display/ML110/WSO2+CEP+Extension+for+ML+Predictions
>>
>> On Thu, Feb 18, 2016 at 12:12 PM, Tishan Dahanayakage <tis...@wso2.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> ML models built with ML 1.0.0 is not compatible with ML 1.1.0. If we try
>>> to use a model build with 1.0.0 against ML 1.1.0 features following
>>> exception is generated. Came across this when testing ML extension for CEP.
>>>
>>>
>>> org.wso2.carbon.event.processor.core.exception.ExecutionPlanConfigurationException:
>>> org.wso2.siddhi.core.exception.ExecutionPlanCreationException: Error while
>>> retrieving ML-model :
>>> registry:/_system/governance/2.Model.2015-12-22_19-47-59
>>> org.wso2.carbon.ml.core.spark.models.MLGeneralizedLinearModel; local
>>> class incompatible: stream classdesc serialVersionUID =
>>> -1410218250358516850, local class serialVersionUID = 8020448562088344988 in
>>> execution plan "ExecutionPlanML"
>>> at
>>> org.wso2.carbon.event.processor.core.internal.util.helper.EventProcessorHelper.validateExecutionPlan(EventProcessorHelper.java:193)
>>> ...
>>> Caused by:
>>> org.wso2.siddhi.core.exception.ExecutionPlanCreationException: Error while
>>> retrieving ML-model :
>>> registry:/_system/governance/2.Model.2015-12-22_19-47-59
>>> org.wso2.carbon.ml.core.spark.models.MLGeneralizedLinearModel; local
>>> class incompatible: stream classdesc serialVersionUID =
>>> -1410218250358516850, local class serialVersionUID = 8020448562088344988
>>> at
>>> org.wso2.carbon.ml.siddhi.extension.PredictStreamProcessor.logError(PredictStreamProcessor.java:350)
>>> at
>>> org.wso2.carbon.ml.siddhi.extension.PredictStreamProcessor.init(PredictStreamProcessor.java:187)
>>> ... 82 more
>>>
>>> Is this expected behavior? If so ​I think we need to mention that models
>>> are not backward compatible in docs.​
>>>
>>>
>>> --
>>> Tishan Dahanayakage
>>> Software Engineer
>>> WSO2, Inc.
>>> Mobile:+94 716481328
>>>
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>>>
>>
>>
>> --
>> Thanks & Regards,
>>
>> Fazlan Nazeem
>>
>> *Software Engineer*
>>
>> *WSO2 Inc*
>> Mobile : +94772338839
>> <%2B94%20%280%29%20773%20451194>
>> fazl...@wso2.com
>>
>> _______________________________________________
>> Dev mailing list
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>>
>>
>
>
> --
>
> *Niranjan Karunanandham*
> Senior Software Engineer - WSO2 Inc.
> WSO2 Inc.: http://www.wso2.com
>



-- 
Thanks & Regards,

Fazlan Nazeem

*Software Engineer*

*WSO2 Inc*
Mobile : +94772338839
<%2B94%20%280%29%20773%20451194>
fazl...@wso2.com
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