+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 >
