This is an early heads-up that the friendly folks who are working on the YARN Timeline Service v.2 (YARN-2928) are nearing the code complete stage for a first merge to trunk. See an earlier email thread [1] for more details on this merge. This is an alpha-quality (preview) release so that people can take it for a spin and provide feedback to make it production-ready. We also made it a priority that it has no impact at all when the feature is disabled.
We're targeting this Friday (4/29) as the code complete date. Once we reach the code complete, we will do a final rebase, work to stabilize the branch, and start the voting discussion. I estimate that the voting discussion is probably a few weeks away but that's a guess at this point. This is a major revision of the Timeline Service, and as such we'd love feedback on many aspects (API, REST, architecture, the HBase backend storage, and so on). That's why I thought that it would be good to have an early heads up so you can start checking out on the work that's being done ahead of time (https://issues.apache.org/jira/browse/YARN-2928). Let me know if you have any questions. Thanks! Sangjin [1] http://markmail.org/message/gbunv4lhcsdqh2u5
