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From Wangda Tan <wheele...@gmail.com>
Subject Re: Hadoop 3.1.0 release discussion
Date Wed, 17 Jan 2018 19:33:03 GMT
Hi All,

Since we're fast approaching previously proposed feature freeze date (Jan
30, about 13 days from today). If you've any features which live in a
branch and targeted to 3.1.0, please reply this email thread. Ideally, we
should finish branch merging before feature freeze date.

Here's an updated 3.1.0 feature status:

1. Merged & Completed features:
* (Sunil) YARN-5881: Support absolute value in CapacityScheduler.
* (Wangda) YARN-6223: GPU support on YARN. Features in trunk and works
end-to-end.
* (Jian) YARN-5079,YARN-4793,YARN-4757,YARN-6419 YARN native services.
* (Steve Loughran): HADOOP-13786: S3Guard committer for zero-rename commits.
* (Suma): YARN-7117: Capacity Scheduler: Support Auto Creation of Leaf
Queues While Doing Queue Mapping.
* (Chris Douglas) HDFS-9806: HDFS Tiered Storage.

2. Features close to finish:
* (Zhankun) YARN-5983: FPGA support. Majority implementations completed and
merged to trunk. Except for UI/documentation.
* (Uma) HDFS-10285: HDFS SPS. Majority implementations are done, some
discussions going on about implementation.
* (Arun Suresh / Kostas / Wangda). YARN-6592: New SchedulingRequest and
anti-affinity support. Close to finish, on track to be merged before Jan 30.

3. Tentative features:
* (Arun Suresh). YARN-5972: Support pausing/freezing opportunistic
containers. Only one pending patch. Plan to finish before Jan 7th.
* (Haibo Chen). YARN-1011: Resource overcommitment. Looks challenging to be
done before Jan 2018.
* (Anu): HDFS-7240: Ozone. Given the discussion on HDFS-7240. Looks
challenging to be done before Jan 2018.
* (Varun V) YARN-5673: container-executor write. Given security refactoring
of c-e (YARN-6623) is already landed, IMHO other stuff may be moved to 3.2.

Thanks,
Wangda




On Fri, Dec 15, 2017 at 1:20 PM, Wangda Tan <wheeleast@gmail.com> wrote:

> Hi all,
>
> Congratulations on the 3.0.0-GA release!
>
> As we discussed in the previous email thread [1], I'd like to restart
> 3.1.0 release plans.
>
> a) Quick summary:
> a.1 Release status
> We started 3.1 release discussion on Sep 6, 2017 [1]. As of today,
> there’re 232 patches loaded on 3.1.0 alone [2], besides 6 open blockers and
> 22 open critical issues.
>
> a.2 Release date update
> Considering delays of 3.0-GA release by month-and-a-half, I propose to
> move the dates as follows
>  - feature freeze date from Dec 15, 2017, to Jan 30, 2018 - last date for
> any branches to get merged too;
>  - code freeze (blockers & critical only) date to Feb 08, 2018;
>  - release voting start by Feb 18, 2018, leaving time for at least two RCx
>  - release date from Jan 15, 2018, to Feb 28, 2018;
>
> Unlike before, I added an additional milestone for release-vote-start so
> that we can account for voting time-period also.
>
> This overall is still 5 1/2 months of release-timeline unlike the faster
> cadence we hoped for, but this, in my opinion, is the best-updated timeline
> given the delays of the final release of 3.0-GA.
>
> b) Individual feature status:
> I spoke to several feature owners and checked the status of un-finished
> features, following are status of features planned to 3.1.0:
>
> b.1 Merged & Completed features:
> * (Sunil) YARN-5881: Support absolute value in CapacityScheduler.
> * (Wangda) YARN-6223: GPU support on YARN. Features in trunk and works
> end-to-end.
> * (Jian) YARN-5079,YARN-4793,YARN-4757,YARN-6419 YARN native services.
> * (Steve Loughran): HADOOP-13786: S3Guard committer for zero-rename
> commits.
> * (Suma): YARN-7117: Capacity Scheduler: Support Auto Creation of Leaf
> Queues While Doing Queue Mapping.
>
> b.2 Features close to finish:
> * (Chris Douglas) HDFS-9806: HDFS Tiered Storage. Being voting now.
> * (Zhankun) YARN-5983: FPGA support. Majority implementations completed
> and merged to trunk. Except for UI/documentation.
> * (Uma) HDFS-10285: HDFS SPS. Majority implementations are done, some
> discussions going on about implementation.
>
> b.3 Tentative features:
> * (Arun Suresh). YARN-5972: Support pausing/freezing opportunistic
> containers. Only one pending patch. Plan to finish before Jan 7th.
> * (Haibo Chen). YARN-1011: Resource overcommitment. Looks challenging to
> be done before Jan 2018.
> * (Arun Suresh / Kostas / Wangda). YARN-6592: New SchedulingRequest and
> anti-affinity support. Tentative will figure out by Jan 1st.
> * (Anu): HDFS-7240: Ozone. Given the discussion on HDFS-7240. Looks
> challenging to be done before Jan 2018.
> * (Varun V) YARN-5673: container-executor write. Given security
> refactoring of c-e (YARN-6623) is already landed, IMHO other stuff may be
> moved to 3.2.
>
> b.4 Additional release drivers
> * More exhaustive upgrade testing from 2.x to 3.x.
>
> c) Regarding branch cut:
>
> We will keep pointing trunk to 3.1 and cut branch-3.1 until: A. some
> feature planned to 3.2 has to be landed on trunk or B. After feature freeze
> date, whichever comes first.
>
> I've also talked offline with Vinod to get help on release-management
> given this is my first release. He agreed to help do this release jointly.
>
> Thoughts?
>
> Thanks,
> Wangda Tan
>
> [1] https://lists.apache.org/thread.html/c11506c3250c9481852130616b3cb0
> 9a0e222f5c2465c015f9906dab@%3Cyarn-dev.hadoop.apache.org%3E
> [2] "project in (YARN, HADOOP, MAPREDUCE, HDFS) AND fixVersion in (3.1.0)
> AND fixVersion not in (3.0.0,2.9.0) ORDER BY priority DESC”
>
>

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