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From Wangda Tan <wheele...@gmail.com>
Subject [VOTE] Merge YARN-3926 (resource profile) to trunk
Date Wed, 23 Aug 2017 18:49:27 GMT
 Hi folks,

Per earlier discussion [1], I'd like to start a formal vote to merge
feature branch YARN-3926 (Resource profile) to trunk. The vote will run for
7 days and will end August 30 10:00 AM PDT.

Briefly, YARN-3926 can extend resource model of YARN to support resource
types other than CPU and memory, so it will be a cornerstone of features
like GPU support (YARN-6223), disk scheduling/isolation (YARN-2139), FPGA
support (YARN-5983), network IO scheduling/isolation (YARN-2140). In
addition to that, YARN-3926 allows admin to preconfigure resource profiles
in the cluster, for example, m3.large means <2 vcores, 8 GB memory, 64 GB
disk>, so applications can request "m3.large" profile instead of specifying
all resource types’s values.

There are 32 subtasks that were completed as part of this effort.

This feature needs to be explicitly turned on before use. We paid close
attention to compatibility, performance, and scalability of this feature,
mentioned in [1], we didn't see observable performance regression in large
scale SLS (scheduler load simulator) executions and saw less than 5%
performance regression by using micro benchmark added by YARN-6775.

This feature works from end-to-end (including UI/CLI/application/server),
we have setup a cluster with this feature turned on runs for several weeks,
we didn't see any issues by far.

Merge JIRA: YARN-7013 (Jenkins gave +1 already).
Documentation: YARN-7056

Special thanks to a team of folks who worked hard and contributed towards
this effort including design discussion/development/reviews, etc.: Varun
Vasudev, Sunil Govind, Daniel Templeton, Vinod Vavilapalli, Yufei Gu,
Karthik Kambatla, Jason Lowe, Arun Suresh.

Wangda Tan


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