Hi Reka, Great work! I have one question regarding the following step: - Member will send the ReadyToShutDown event to instance-status topic once it is done with the cleaning up
Here I could see that we have introduced a new extension called clean.sh to let the instance to execute a clean operation before the shutdown happens. My question is how does the instance communicate back to the cartridge agent (Bash to Java) once its process is complete to send the ReadyToShutDown event? Thanks Imesh On Wed, Jan 15, 2014 at 1:48 PM, Lahiru Sandaruwan <[email protected]> wrote: > Hi Reka, > > Yes, I'm done. Sorry for the late reply. > Following table explains it. > > > Spawn invoked from AS > > Adding a pending member > > Member Activated event(from CC) > > Pending -> Active > > Graceful shutdown event sent from AS > > Active -> Termination pending > > Member Terminated event(from CC) > > Removing the termination pending member > > Member fault event(from CEP) > > Active Member -> Obsolete member > > I'm not sure if we can use ready shutdown state here. What autoscaler need > to know is whether the member needs to be considered as a Active serving > member or it is on the way to shut down(or already shut down). > > > Thanks. > > > On Wed, Jan 15, 2014 at 1:59 PM, Reka Thirunavukkarasu <[email protected]>wrote: > >> Hi Lahiru, >> >> Have you done with the changes on this improvement? If so, Can you >> explain that how have you done with it? >> Else, I believe that we can use the already existing ReadyToShutDown >> state to improve the instance termination in autoscaler? >> >> Thanks, >> Reka >> >> >> On Tue, Jan 14, 2014 at 12:07 AM, Lahiru Sandaruwan <[email protected]>wrote: >> >>> HI Reka, >>> >>> I think we have to do a improvement in autosclaer side since this will >>> take some time to terminate. May be introducing "pending terminate". >>> >>> Otherwise scaling down rule wont stop scaling down properly... >>> >>> Thanks. >>> >>> >>> On Fri, Jan 10, 2014 at 10:40 AM, Reka Thirunavukkarasu >>> <[email protected]>wrote: >>> >>>> Hi Udara, >>>> >>>> +1. It is a good point. I will consider introducing a timeout in >>>> Autoscaler to decide on the actual termination after making the call to SM. >>>> >>>> Thanks, >>>> Reka >>>> >>>> >>>> On Fri, Jan 10, 2014 at 8:26 AM, Udara Liyanage <[email protected]> wrote: >>>> >>>>> Let's say Instance cleanup hang due to some reason(a file could not be >>>>> deleted). Then instance won't send the readyToTerminate message. So isn't >>>>> it better instance is terminated by force after timeout when the graceful >>>>> shutdown is issued. >>>>> >>>>> Touched, not typed. Erroneous words are a feature, not a typo. >>>>> >>>> >>>> >>>> >>>> -- >>>> Reka Thirunavukkarasu >>>> Software Engineer, >>>> WSO2, Inc.:http://wso2.com, >>>> Mobile: +94776442007 >>>> >>>> >>>> >>> >>> >>> -- >>> -- >>> Lahiru Sandaruwan >>> Software Engineer, >>> Platform Technologies, >>> WSO2 Inc., http://wso2.com >>> lean.enterprise.middleware >>> >>> email: [email protected] 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 >>> >>> >> >> >> -- >> Reka Thirunavukkarasu >> Software Engineer, >> WSO2, Inc.:http://wso2.com, >> Mobile: +94776442007 >> >> >> > > > -- > -- > Lahiru Sandaruwan > Software Engineer, > Platform Technologies, > WSO2 Inc., http://wso2.com > lean.enterprise.middleware > > email: [email protected] 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 > >
