It would help to add the Jira link and/or paste the design document here. On Tue, Sep 8, 2015 at 11:27 AM Ajay Yadav <[email protected]> wrote:
> Hello everyone, > > During our previous sync up we discussed feed lifecycle. I have > incorporated the suggestions in the updated design doc (attached). In this > email I will try to answer the remaining unresolved questions. > > *Target Audience?* > Falcon users are the people who write falcon processes and feeds and use > Falcon CLI/ Rest API to maintain/operate them. Falcon developers are the > people who work on enhancing falcon, regardless of the their decision to > contribute it back to the Apache Falcon, though it is highly encouraged. > Lifecycle extensions are meant for falcon developers to extend. > > Through the lifecycle feature we aim to provide clean extension points for > extending feed management. It will be easier to understand falcon feed > lifecycle with the analogy of oozie-el-extensions. > > > *Is a restart of falcon required for adding a new lifecycle policy?* > Yes, a restart is required. Lifecycle policies are applicable for all feeds > in the falcon and we want addition of new lifecycle policies to be an > explicit and authorised action. Moreover, addition of new policy for a > lifecycle stage is a rare requirement and shouldn't be a hindrance in it's > adoption. > > > *Will lifecycle policies run as a separate process?* > No. Execution of lifecycle policies happen outside of falcon. Some parts > like preparing the workflows and validation are done inside falcon at the > time of submission of a feed. Again with the analogy of > oozie-el-extensions, this is an extension of falcon and is different from > user submitted workflows/process definitions and running it in a separate > JVM will be an overkill. > > > I have attached the latest doc and xsd patch in the JIRA for your > consideration. Would like to hear your thoughts. Once we have closure over > design, I will work towards providing a complete patch for base framework. > > > Cheers > Ajay Yadava >
