+1 from me too —Anu
> On Feb 7, 2020, at 1:47 PM, Siddharth Wagle <[email protected]> > wrote: > > Agree with Xiaoyu, +1 for the merge. > > Thanks, Li Cheng for working on this feature and taking it to completion. > > Best, > Sid > >> On Fri, Feb 7, 2020 at 1:38 PM Xiaoyu Yao <[email protected]> wrote: >> >> Thanks for sharing the data. Given the issues raised earlier have been >> addressed in the follow up JIRA. I'm +1 for merge. >> >> Xiaoyu >> >> On Fri, Feb 7, 2020 at 8:34 AM timmycheng(程力) <[email protected]> >> wrote: >> >>> Hey all, >>> >>> Just wanna follow up on multi-raft feature progress. I’ve collect some >>> feedbacks from Xiaoyu, Anu and Sid ( >>> >> https://docs.google.com/document/d/1NxCiHhn0u9BqgjuUXB8zxGtny69Qek4yTFe1QqUHiqM/edit >> ) >>> and address them all in HDDS-2913. Shout out to Xiaoyu, Anu and Sid for >> the >>> feedbacks and help on resolving them as well. Also would like to know if >>> there are other comments and reviews. >>> >>> We at Tencent has already deployed the multi-raft version to our internal >>> production cluster and it’s serving reasonable amount of traffic now. So >>> far there are over 16K times of write into our Ozone cluster and I >> compare >>> with the single-raft version’s performance. Both are measured in similar >>> pattern of traffic on daily basis. >>> >>> Write finishes in: >>> >>> Single raft >>> >>> Multi raft >>> >>>> 3s >>> >>> 0.009% >>> >>> 0.006% >>> >>> 2s ~ 3s >>> >>> 27.4% >>> >>> 1.46% >>> >>> 1s ~ 2s >>> >>> 1.64% >>> >>> 0.07% >>> >>> 0.2s ~ 1s >>> >>> 2.7% >>> >>> 0.53% >>> >>> < 0.2s >>> >>> 68.2% >>> >>> 97.9% >>> >>> >>> Our internal customer writes to ozone every day and there are schedules >>> jobs as well as on-demand jobs. Size could be from KB to GB every write, >>> but every daes y’s traffic share the same pattern. Therefore, we see that >>> multi-raft version makes ~98% of write finish within 0.2s, which is 20% >>> more than what single-raft version can do. At the same time, those who >>> finishes from 2s to 3s reduces from 27.4% to 1.46%. Multi-raft has made >> our >>> internal cluster more stable and the latency fluctuates way less, which >> is >>> pretty helpful. >>> >>> Cheers, >>> Li >>> >>> 发件人: "timmycheng(程力)" <[email protected]> >>> 日期: 2020年1月13日 星期一 下午4:24 >>> 收件人: "[email protected]" <[email protected]> >>> 主题: [DISCUSS] - Merge Multi-Raft Support - HDDS-1564 >>> >>> Hey all, >>> >>> Happy to present the multi-raft feature to ozone community ( >>> https://issues.apache.org/jira/browse/HDDS-1564). This feature is to >>> allow every datanode to host more than 1 pipeline based on user config to >>> better utilize every datanode’s disks IO. >>> >>> All dev work have been done and I’ve conducted performance tests in >>> different scenarios. Based on my testing, multi-raft ozone cluster can >> help >>> to make writing latency as low as 1/3 of single-raft’s one. Please check >>> the attachment in the above JIRA for test brief and more details as well >> as >>> the code patch. >>> >>> I would like to use this thread to discuss about this feature and it’s >>> merge back to master. >>> >>> -Li >>> >> --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
