[jira] [Created] (PIO-47) Remove engine manifest for stateless build

["Chan (JIRA)" <ji...@apache.org>]

Chan created PIO-47:
-----------------------

             Summary: Remove engine manifest for stateless build
                 Key: PIO-47
                 URL: https://issues.apache.org/jira/browse/PIO-47
             Project: PredictionIO
          Issue Type: New Feature
            Reporter: Chan


As discussed in the dev mailing list, removing engine manifest would be the first step in improving the workflow towards a more modular design. 

- Remove manifest.json completely. `pio build` will be stateless, and will not write anything to the database. This will make it easier to compile/build on PaaS platforms such as Heroku. Later, we can remove `pio build` command entirely, so that PIO is independent of the build tool (sbt).

- An immediate major disadvantage would be not being able to run pio commands outside of the engine directory. This can be resolved in the next step of creating a general metadata registry.

- Meanwhile, we can use engineFactory as **engineId**, and SHA-1 hash of engine filepath as **engineVersion** (as before). We can improve this when designing a metadata registry, 




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)