Hi Lahiru, Shall we have hangout on saturday?
*T. Pranavan* *BSc Eng Undergraduate| Department of Computer Science & Engineering ,University of Moratuwa* *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* *Mobile| *0775136836 On 25 March 2015 at 10:39, Pranavan Theivendiram <[email protected]> wrote: > Ok Lahiru. > > I have noted down some problems in understanding the code base. We will > have hangout in near future and let us resolve it out. > > *T. Pranavan* > *BSc Eng Undergraduate| Department of Computer Science & Engineering > ,University of Moratuwa* > *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* > *Mobile| *0775136836 > > On 25 March 2015 at 10:36, Lahiru Sandaruwan <[email protected]> wrote: > >> Yes, Please arrange a Google hangout if needed. >> >> Thanks. >> >> On Wed, Mar 25, 2015 at 10:35 AM, Pranavan Theivendiram < >> [email protected]> wrote: >> >>> Thanks Lahiru, >>> >>> I will contact you if I need any assistance. >>> >>> *T. Pranavan* >>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>> ,University of Moratuwa* >>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>> *Mobile| *0775136836 >>> >>> On 25 March 2015 at 10:30, Lahiru Sandaruwan <[email protected]> wrote: >>> >>>> >>>> >>>> On Wed, Mar 25, 2015 at 10:10 AM, Pranavan Theivendiram < >>>> [email protected]> wrote: >>>> >>>>> Hi Lahiru, >>>>> >>>>> Thanks for the prompt reply. >>>>> >>>>> *+1 for* >>>>> *we can find the polynomial in each minute, considering 10 minutes of >>>>> past data, we can change this if required.* >>>>> >>>>> If we are getting the health stats events uniformly for every 10 >>>>> seconds. my question is resolved. (I thought that we are getting in a >>>>> random manner). >>>>> >>>>> Can I add the things in my proposal regarding "Curve Fitting"? >>>>> >>>> >>>> Yes, Please. >>>> >>>>> >>>>> Do you think that any other important things I need to add in my >>>>> proposal? >>>>> >>>> >>>> It looks good. Hope you referred [1] on this. >>>> >>>> Thanks. >>>> >>>> [1] http://community.apache.org/gsoc.html#applying-for-gsoc >>>> >>>> Thanks. >>>> >>>>> >>>>> *T. Pranavan* >>>>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>>>> ,University of Moratuwa* >>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>> *Mobile| *0775136836 >>>>> >>>>> On 25 March 2015 at 10:09, Pranavan Theivendiram < >>>>> [email protected]> wrote: >>>>> >>>>>> Hi Lahiru, >>>>>> >>>>>> Thanks for the prompt reply. >>>>>> >>>>>> *+1 for* >>>>>> *we can find the polynomial in each minute, considering 10 minutes of >>>>>> past data, we can change this if required.* >>>>>> >>>>>> If we are getting the health stats events uniformly for every 10 >>>>>> seconds. my question is resolved. (I thought that we are getting in a >>>>>> random manner). >>>>>> >>>>>> Can I add the things in my proposal regarding "Curve Fitting"? >>>>>> >>>>>> Do you think that any other important things I need to add in my >>>>>> proposal? >>>>>> >>>>>> *T. Pranavan* >>>>>> *BSc Eng Undergraduate| Department of Computer Science & Engineering >>>>>> ,University of Moratuwa* >>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>> *Mobile| *0775136836 >>>>>> >>>>>> On 25 March 2015 at 09:59, Lahiru Sandaruwan <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> +1 for using Common math library, as we already using it. >>>>>>> >>>>>>> - Currently we have calculating numbers per minute, so it is not >>>>>>> per specified number of events, but for a specified time. >>>>>>> - IMO we can find the polynomial in each minute, considering 10 >>>>>>> minutes of past data, we can change this if required. >>>>>>> - Normally, health stat events are received in each 10 seconds. >>>>>>> - Therefore we will have 60 ( = 6 * 10) events per 10 minutes. >>>>>>> >>>>>>> On Wed, Mar 25, 2015 at 9:11 AM, Pranavan Theivendiram < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Hi Lahiru and Raj, >>>>>>>> >>>>>>>> I have gone through the curve fitting materials that you have >>>>>>>> provided. I have understood the regression part and prediction of >>>>>>>> degree >>>>>>>> polynomials. We can use apache common math libraries to do this. I >>>>>>>> have a >>>>>>>> question below. >>>>>>>> >>>>>>>> How often we are going to find the polynomials? >>>>>>>> >>>>>>>> For example, >>>>>>>> >>>>>>>> If we have *3 samples* events during *10 minutes interval*, then >>>>>>>> we can produce a second degree polynomial. (We will get constants >>>>>>>> *a*,*b*, and *c*). If we are going to use this second degree >>>>>>>> polynomial for next *60 minutes *(Suppose in this 60 minutes we >>>>>>>> are getting *200 samples *events). As we can see our *extrapolation >>>>>>>> <http://en.wikipedia.org/wiki/Extrapolation>* becomes a severe >>>>>>>> problem in this particular example. >>>>>>>> >>>>>>> >>>>>>> What do you mean by " our *extrapolation >>>>>>> <http://en.wikipedia.org/wiki/Extrapolation>* becomes a severe >>>>>>> problem"? Complexity of the calculation of predicted value? >>>>>>> >>>>>>> Thanks. >>>>>>> >>>>>>>> I do not know how earlier versions handle this scenario. >>>>>>>> >>>>>>>> Can you tell that are we going produce new polynomials for *a >>>>>>>> specified time* or *a specified number of events*? >>>>>>>> >>>>>>>> Please clear this issue. >>>>>>>> >>>>>>>> *T. Pranavan* >>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>> Engineering ,University of Moratuwa* >>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>> *Mobile| *0775136836 >>>>>>>> >>>>>>>> On 24 March 2015 at 09:02, Lahiru Sandaruwan <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> Thanks Pranavan, >>>>>>>>> >>>>>>>>> I'll have a look. >>>>>>>>> >>>>>>>>> >>>>>>>>> On Tue, Mar 24, 2015 at 8:52 AM, Pranavan Theivendiram < >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> Hi Lahiru and Raj, >>>>>>>>>> >>>>>>>>>> This is my draft proposal which has been done up to 50%. I am >>>>>>>>>> going to add things about curve fitting as well. Still many things >>>>>>>>>> need to >>>>>>>>>> be added. Please comment on my initial draft. >>>>>>>>>> I am expecting pros and cons regarding my proposal. Please find >>>>>>>>>> the link for the initial draft below. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> https://docs.google.com/a/cse.mrt.ac.lk/document/d/1TzHYI2o9bIdZWj4qAffNmH5FTgeTOV4TuSsxlISlU8c/edit?usp=sharing >>>>>>>>>> >>>>>>>>>> *T. Pranavan* >>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>> >>>>>>>>>> On 22 March 2015 at 23:36, Pranavan Theivendiram < >>>>>>>>>> [email protected]> wrote: >>>>>>>>>> >>>>>>>>>>> Thanks Lahiru for the prompt reply. I have already started >>>>>>>>>>> working on the proposal. I will send it before tomorrow. >>>>>>>>>>> >>>>>>>>>>> *T. Pranavan* >>>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>>> >>>>>>>>>>> On 22 March 2015 at 23:31, Lahiru Sandaruwan <[email protected]> >>>>>>>>>>> wrote: >>>>>>>>>>> >>>>>>>>>>>> Hi, >>>>>>>>>>>> >>>>>>>>>>>> Yes, You have found the information correctly and on right >>>>>>>>>>>> track. It would be great if we can incorporate CEP 4.0.0 changes >>>>>>>>>>>> as it >>>>>>>>>>>> would minimize our customized function. >>>>>>>>>>>> >>>>>>>>>>>> I would like to suggest you starting the drafting of the >>>>>>>>>>>> proposal as you have some background now. >>>>>>>>>>>> >>>>>>>>>>>> Thanks. >>>>>>>>>>>> >>>>>>>>>>>> On Sun, Mar 22, 2015 at 9:48 PM, Pranavan Theivendiram < >>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> Hi all, >>>>>>>>>>>>> >>>>>>>>>>>>> With the few days of research on the project "Introducing >>>>>>>>>>>>> “curve fitting” for statistics prediction algorithm of >>>>>>>>>>>>> Autoscaler". I have >>>>>>>>>>>>> found >>>>>>>>>>>>> followings regarding the project >>>>>>>>>>>>> >>>>>>>>>>>>> 1. ClusterMonitor class passes the calculated values from >>>>>>>>>>>>> the CEP. This value passing happens after >>>>>>>>>>>>> org.apache.stratos.messaging.event happens. >>>>>>>>>>>>> 2. RuleTasksDelegator class calculates the prediction >>>>>>>>>>>>> values using the values(Ex gradient) from the CEP >>>>>>>>>>>>> 3. The classes in the package >>>>>>>>>>>>> org.apache.stratos.cep.extension deals with the analysis of >>>>>>>>>>>>> data in the >>>>>>>>>>>>> real time and publish the relevant summarized health stats, >>>>>>>>>>>>> which are >>>>>>>>>>>>> needed for the autoscaling. >>>>>>>>>>>>> >>>>>>>>>>>>> So according to my understanding, I need to modify above >>>>>>>>>>>>> mentioned classes, in order to implement the curve fitting for >>>>>>>>>>>>> statistics >>>>>>>>>>>>> prediction. >>>>>>>>>>>>> >>>>>>>>>>>>> Furthermore,for this project, we can use the regression >>>>>>>>>>>>> implementation of CEP 4.0, which is expected to be released on >>>>>>>>>>>>> May 15th >>>>>>>>>>>>> according to WSO2 public jira. I am planning to do a feasibility >>>>>>>>>>>>> study for >>>>>>>>>>>>> the first two weeks of the project, where we can explore other >>>>>>>>>>>>> better >>>>>>>>>>>>> options as well. >>>>>>>>>>>>> >>>>>>>>>>>>> Am I on a right track? Please share your thoughts on this. >>>>>>>>>>>>> >>>>>>>>>>>>> [1] https://wso2.org/jira/browse/CEP >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks >>>>>>>>>>>>> >>>>>>>>>>>>> Regards >>>>>>>>>>>>> *T. Pranavan* >>>>>>>>>>>>> *BSc Eng Undergraduate| Department of Computer Science & >>>>>>>>>>>>> Engineering ,University of Moratuwa* >>>>>>>>>>>>> *Intern Software Engineer**| WSO2 Lanka (Pvt) Ltd.* >>>>>>>>>>>>> *Mobile| *0775136836 >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> -- >>>>>>>>>>>> Lahiru Sandaruwan >>>>>>>>>>>> Committer and PMC member, Apache Stratos, >>>>>>>>>>>> Senior Software Engineer, >>>>>>>>>>>> WSO2 Inc., http://wso2.com >>>>>>>>>>>> lean.enterprise.middleware >>>>>>>>>>>> >>>>>>>>>>>> phone: +94773325954 >>>>>>>>>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>>>>>>>>> linked-in: >>>>>>>>>>>> http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> -- >>>>>>>>> Lahiru Sandaruwan >>>>>>>>> Committer and PMC member, Apache Stratos, >>>>>>>>> Senior Software Engineer, >>>>>>>>> WSO2 Inc., http://wso2.com >>>>>>>>> lean.enterprise.middleware >>>>>>>>> >>>>>>>>> phone: +94773325954 >>>>>>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>>>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> -- >>>>>>> Lahiru Sandaruwan >>>>>>> Committer and PMC member, Apache Stratos, >>>>>>> Senior Software Engineer, >>>>>>> WSO2 Inc., http://wso2.com >>>>>>> lean.enterprise.middleware >>>>>>> >>>>>>> phone: +94773325954 >>>>>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>>>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> -- >>>> Lahiru Sandaruwan >>>> Committer and PMC member, Apache Stratos, >>>> Senior Software Engineer, >>>> WSO2 Inc., http://wso2.com >>>> lean.enterprise.middleware >>>> >>>> phone: +94773325954 >>>> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >>>> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >>>> >>>> >>> >> >> >> -- >> -- >> Lahiru Sandaruwan >> Committer and PMC member, Apache Stratos, >> Senior Software Engineer, >> WSO2 Inc., http://wso2.com >> lean.enterprise.middleware >> >> phone: +94773325954 >> email: [email protected] blog: http://lahiruwrites.blogspot.com/ >> linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146 >> >> >
