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Subject: Re: [VOTE] merge feature branch YARN-2928
From: Vinod Kumar Vavilapalli <vinodkv@apache.org>
In-Reply-To: <CADbBEnvcVoFCuUkd1RRZsHNixuTiXE=RAce5Ayd94O+kB_kO3Q@mail.gmail.com>
Date: Fri, 8 Jul 2016 09:08:50 -0700
Cc: "yarn-dev@hadoop.apache.org" <yarn-dev@hadoop.apache.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <58D62A90-E091-41DE-A8D7-49F63AA9CD43@apache.org>
References: <CADbBEnvcVoFCuUkd1RRZsHNixuTiXE=RAce5Ayd94O+kB_kO3Q@mail.gmail.com>
To: Sangjin Lee <sjlee@apache.org>
archived-at: Fri, 08 Jul 2016 16:08:53 -0000

+1 binding.

Thanks
+Vinod

> On Jul 1, 2016, at 9:00 AM, Sangjin Lee <sjlee@apache.org> wrote:
>=20
> Hi folks,
>=20
> Per earlier discussion [1], I'd like to start a formal vote to merge
> feature branch YARN-2928 [2] (Timeline Service v.2) to trunk. The vote =
will
> run for 7 days, and will end July 8 9:00 AM PDT.
>=20
> We have been developing the feature in a feature branch (YARN-2928 =
[3]) for
> a while, and we are reasonably confident that the state of the feature
> meets the criteria to be merged onto trunk and we'd love folks to get =
their
> hands on it in a test capacity and provide valuable feedback so that =
we can
> make it production-ready.
>=20
> In a nutshell, Timeline Service v.2 delivers significant scalability =
and
> usability improvements based on a new architecture. You can browse the
> requirements/design doc, the storage schema doc, the new entity/data =
model,
> the YARN documentation, and also discussions on subsequent milestones =
on
> YARN-2928 [2].
>=20
> What we would like to merge to trunk is termed "alpha 1" (milestone =
1). The
> feature has a complete end-to-end read/write flow, and you should be =
able
> to start setting it up and testing it. At a high level, the following =
are
> the key features that have been implemented:
>=20
> - distributed writers (collectors) as NM aux services
> - HBase storage
> - new entity model that includes flows
> - setting the flow context via YARN app tags
> - real time metrics aggregation to the application level and the flow =
level
> - rich REST API that supports filters, complex conditionals, limits,
> content selection, etc.
> - YARN generic events and system metrics
> - integration with Distributed Shell and MapReduce
>=20
> There are a total of 139 subtasks that were completed as part of this
> effort.
>=20
> We paid close attention to ensure that once disabled Timeline Service =
v.2
> does not impact existing functionality when disabled (by default).
>=20
> Special thanks go to all the folks who worked real hard on this =
feature: Li
> Lu, Junping Du, Vinod Kumar Vavilapalli, Naga G. R., Varun Saxena, =
Vrushali
> C, and Joep Rottinghuis!
>=20
> Regards,
> Sangjin
>=20
> [1]
> =
https://lists.apache.org/thread.html/314288f399f5ef96b2f4f1fc055ac5d440310=
c8d98ace9a0045e8729@%3Cyarn-dev.hadoop.apache.org%3E
> [2] https://issues.apache.org/jira/browse/YARN-2928
> [3] https://github.com/apache/hadoop/commits/YARN-2928


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