+1 On Jan 26, 2018 9:28 AM, "Sunil G" <sun...@apache.org> wrote:
> +1 > > - Sunil > > > On Fri, Jan 26, 2018 at 8:58 PM Arun Suresh <asur...@apache.org> wrote: > >> Hello yarn-dev@ >> >> Based on the positive feedback from the DISCUSS thread [1], I'd like to >> start a formal vote to merge YARN-6592 [2] to trunk. The vote will run for >> 5 days, and will end Jan 31 7:30AM PDT. >> >> This feature adds support for placing containers in YARN using rich >> placement constraints. For example, this can be used by applications to >> co-locate containers on a node or rack (*affinity *constraint), spread >> containers across nodes or racks (*anti-affinity* constraint), or even >> specify the maximum number of containers on a node/rack (*cardinality * >> constraint). >> >> We have integrated this feature into the Distributed-Shell application >> for feature testing. We have performed end-to-end testing on >> moderately-sized clusters to verify that constraints work fine. Performance >> tests have been done via both SLS tests and Capacity Scheduler performance >> unit tests, and no regression was found. We have opened a JIRA to track >> Jenkins acceptance of the aggregated patch [3]. Documentation is in the >> process of being completed [4]. You can also check our design document for >> more details [5]. >> >> Config flags are needed to enable this feature and it should not have any >> effect on YARN when turned off. Once merged, we plan to work on further >> improvements, which can be tracked in the umbrella YARN-7812 [6]. >> >> Kindly do take a look at the branch and raise issues/concerns that need >> to be addressed before the merge. >> >> Many thanks to Konstantinos, Wangda, Panagiotis, Weiwei, and Sunil for >> their contributions to this effort, as well as Subru, Chris, Carlo, and >> Vinod for their inputs and discussions. >> >> >> Cheers >> -Arun >> >> [1] http://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/ >> 201801.mbox/%3CCAMreUaz%3DGnsjOLZ%3Dem2x%3DQS7qh27euCWNw6Bo_4Cu% >> 2BfXnXhyNA%40mail.gmail.com%3E >> [2] https://issues.apache.org/jira/browse/YARN-6592 >> [3] https://issues.apache.org/jira/browse/YARN-7792 >> [4] https://issues.apache.org/jira/browse/YARN-7780 >> [5] https://issues.apache.org/jira/secure/attachment/ >> 12867869/YARN-6592-Rich-Placement-Constraints-Design-V1.pdf >> [6] https://issues.apache.org/jira/browse/YARN-7812 >> >
