+1
On Mon, Mar 29, 2021 at 5:44 AM Yangze Guo <karma...@gmail.com> wrote: > +1 > > Best, > Yangze Guo > > On Mon, Mar 29, 2021 at 11:31 AM Xintong Song <tonysong...@gmail.com> > wrote: > > > > +1 > > It's already a matter of fact for a while that we no longer port new > features to the Mesos deployment. > > > > Thank you~ > > > > Xintong Song > > > > > > > > On Fri, Mar 26, 2021 at 10:37 PM Till Rohrmann <trohrm...@apache.org> > wrote: > >> > >> +1 for officially deprecating this component for the 1.13 release. > >> > >> Cheers, > >> Till > >> > >> On Thu, Mar 25, 2021 at 1:49 PM Konstantin Knauf <kna...@apache.org> > wrote: > >>> > >>> Hi Matthias, > >>> > >>> Thank you for following up on this. +1 to officially deprecate Mesos > in the code and documentation, too. It will be confusing for users if this > diverges from the roadmap. > >>> > >>> Cheers, > >>> > >>> Konstantin > >>> > >>> On Thu, Mar 25, 2021 at 12:23 PM Matthias Pohl <matth...@ververica.com> > wrote: > >>>> > >>>> Hi everyone, > >>>> considering the upcoming release of Flink 1.13, I wanted to revive the > >>>> discussion about the Mesos support ones more. Mesos is also already > listed > >>>> as deprecated in Flink's overall roadmap [1]. Maybe, it's time to > align the > >>>> documentation accordingly to make it more explicit? > >>>> > >>>> What do you think? > >>>> > >>>> Best, > >>>> Matthias > >>>> > >>>> [1] https://flink.apache.org/roadmap.html#feature-radar > >>>> > >>>> On Wed, Oct 28, 2020 at 9:40 AM Till Rohrmann <trohrm...@apache.org> > wrote: > >>>> > >>>> > Hi Oleksandr, > >>>> > > >>>> > yes you are right. The biggest problem is at the moment the lack of > test > >>>> > coverage and thereby confidence to make changes. We have some e2e > tests > >>>> > which you can find here [1]. These tests are, however, quite coarse > grained > >>>> > and are missing a lot of cases. One idea would be to add a Mesos > e2e test > >>>> > based on Flink's end-to-end test framework [2]. I think what needs > to be > >>>> > done there is to add a Mesos resource and a way to submit jobs to a > Mesos > >>>> > cluster to write e2e tests. > >>>> > > >>>> > [1] https://github.com/apache/flink/tree/master/flink-jepsen > >>>> > [2] > >>>> > > https://github.com/apache/flink/tree/master/flink-end-to-end-tests/flink-end-to-end-tests-common > >>>> > > >>>> > Cheers, > >>>> > Till > >>>> > > >>>> > On Tue, Oct 27, 2020 at 12:29 PM Oleksandr Nitavskyi < > >>>> > o.nitavs...@criteo.com> wrote: > >>>> > > >>>> >> Hello Xintong, > >>>> >> > >>>> >> Thanks for the insights and support. > >>>> >> > >>>> >> Browsing the Mesos backlog and didn't identify anything critical, > which > >>>> >> is left there. > >>>> >> > >>>> >> I see that there are were quite a lot of contributions to the > Flink Mesos > >>>> >> in the recent version: > >>>> >> https://github.com/apache/flink/commits/master/flink-mesos. > >>>> >> We plan to validate the current Flink master (or release 1.12 > branch) our > >>>> >> Mesos setup. In case of any issues, we will try to propose changes. > >>>> >> My feeling is that our test results shouldn't affect the Flink 1.12 > >>>> >> release cycle. And if any potential commits will land into the > 1.12.1 it > >>>> >> should be totally fine. > >>>> >> > >>>> >> In the future, we would be glad to help you guys with any > >>>> >> maintenance-related questions. One of the highest priorities > around this > >>>> >> component seems to be the development of the full e2e test. > >>>> >> > >>>> >> Kind Regards > >>>> >> Oleksandr Nitavskyi > >>>> >> ________________________________ > >>>> >> From: Xintong Song <tonysong...@gmail.com> > >>>> >> Sent: Tuesday, October 27, 2020 7:14 AM > >>>> >> To: dev <d...@flink.apache.org>; user <user@flink.apache.org> > >>>> >> Cc: Piyush Narang <p.nar...@criteo.com> > >>>> >> Subject: [BULK]Re: [SURVEY] Remove Mesos support > >>>> >> > >>>> >> Hi Piyush, > >>>> >> > >>>> >> Thanks a lot for sharing the information. It would be a great > relief that > >>>> >> you are good with Flink on Mesos as is. > >>>> >> > >>>> >> As for the jira issues, I believe the most essential ones should > have > >>>> >> already been resolved. You may find some remaining open issues > here [1], > >>>> >> but not all of them are necessary if we decide to keep Flink on > Mesos as is. > >>>> >> > >>>> >> At the moment and in the short future, I think helps are mostly > needed on > >>>> >> testing the upcoming release 1.12 with Mesos use cases. The > community is > >>>> >> currently actively preparing the new release, and hopefully we > could come > >>>> >> up with a release candidate early next month. It would be greatly > >>>> >> appreciated if you fork as experienced Flink on Mesos users can > help with > >>>> >> verifying the release candidates. > >>>> >> > >>>> >> > >>>> >> Thank you~ > >>>> >> > >>>> >> Xintong Song > >>>> >> > >>>> >> [1] > >>>> >> > https://issues.apache.org/jira/browse/FLINK-17402?jql=project%20%3D%20FLINK%20AND%20component%20%3D%20%22Deployment%20%2F%20Mesos%22%20AND%20status%20%3D%20Open > >>>> >> < > >>>> >> > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fissues.apache.org%2Fjira%2Fbrowse%2FFLINK-17402%3Fjql%3Dproject%2520%253D%2520FLINK%2520AND%2520component%2520%253D%2520%2522Deployment%2520%252F%2520Mesos%2522%2520AND%2520status%2520%253D%2520Open&data=04%7C01%7Co.nitavskyi%40criteo.com%7C3585e1f25bdf4e091af808d87a3f92db%7C2a35d8fd574d48e3927c8c398e225a01%7C1%7C0%7C637393760750820881%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hytJFQE0MCPzMLiQTQTdbg3GVckX5M3r1NPRGrRV8j4%3D&reserved=0 > >>>> >> > > >>>> >> > >>>> >> On Tue, Oct 27, 2020 at 2:58 AM Piyush Narang <p.nar...@criteo.com > >>>> >> <mailto:p.nar...@criteo.com>> wrote: > >>>> >> > >>>> >> Hi Xintong, > >>>> >> > >>>> >> > >>>> >> > >>>> >> Do you have any jiras that cover any of the items on 1 or 2? I can > reach > >>>> >> out to folks internally and see if I can get some folks to commit > to > >>>> >> helping out. > >>>> >> > >>>> >> > >>>> >> > >>>> >> To cover the other qs: > >>>> >> > >>>> >> * Yes, we’ve not got a plan at the moment to get off Mesos. We > use > >>>> >> Yarn for some our Flink workloads when we can. Mesos is only used > when we > >>>> >> need streaming capabilities in our WW dcs (as our Yarn is > centralized in > >>>> >> one DC) > >>>> >> * We’re currently on Flink 1.9 (old planner). We have a plan > to bump > >>>> >> to 1.11 / 1.12 this quarter. > >>>> >> * We typically upgrade once every 6 months to a year (not every > >>>> >> release). We’d like to speed up the cadence but we’re not there > yet. > >>>> >> * We’d largely be good with keeping Flink on Mesos as-is and > >>>> >> functional while missing out on some of the newer features. We > understand > >>>> >> the pain on the communities side and we can take on the work if we > see some > >>>> >> fancy improvement in Flink on Yarn / K8s that we want in Mesos to > put in > >>>> >> the request to port it over. > >>>> >> > >>>> >> > >>>> >> > >>>> >> Thanks, > >>>> >> > >>>> >> > >>>> >> > >>>> >> -- Piyush > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> From: Xintong Song <tonysong...@gmail.com<mailto: > tonysong...@gmail.com>> > >>>> >> Date: Sunday, October 25, 2020 at 10:57 PM > >>>> >> To: dev <d...@flink.apache.org<mailto:d...@flink.apache.org>>, user > < > >>>> >> user@flink.apache.org<mailto:user@flink.apache.org>> > >>>> >> Cc: Lasse Nedergaard <lassenedergaardfl...@gmail.com<mailto: > >>>> >> lassenedergaardfl...@gmail.com>>, <p.nar...@criteo.com<mailto: > >>>> >> p.nar...@criteo.com>> > >>>> >> Subject: Re: [SURVEY] Remove Mesos support > >>>> >> > >>>> >> > >>>> >> > >>>> >> Thanks for sharing the information with us, Piyush an Lasse. > >>>> >> > >>>> >> > >>>> >> > >>>> >> @Piyush > >>>> >> > >>>> >> > >>>> >> > >>>> >> Thanks for offering the help. IMO, there are currently several > problems > >>>> >> that make supporting Flink on Mesos challenging for us. > >>>> >> > >>>> >> 1. Lack of Mesos experts. AFAIK, there are very few people (if > not > >>>> >> none) among the active contributors in this community that are > familiar > >>>> >> with Mesos and can help with development on this component. > >>>> >> 2. Absence of tests. Mesos does not provide a testing cluster, > like > >>>> >> `MiniYARNCluster`, making it hard to test interactions between > Flink and > >>>> >> Mesos. We have only a few very simple e2e tests running on Mesos > deployed > >>>> >> in a docker, covering the most fundamental workflows. We are not > sure how > >>>> >> well those tests work, especially against some potential corner > cases. > >>>> >> 3. Divergence from other deployment. Because of 1 and 2, the new > >>>> >> efforts (features, maintenance, refactors) tend to exclude Mesos if > >>>> >> possible. When the new efforts have to touch the Mesos related > components > >>>> >> (e.g., changes to the common resource manager interfaces), we have > to be > >>>> >> very careful and make as few changes as possible, to avoid > accidentally > >>>> >> breaking anything that we are not familiar with. As a result, the > component > >>>> >> diverges a lot from other deployment components (K8s/Yarn), which > makes it > >>>> >> harder to maintain. > >>>> >> > >>>> >> It would be greatly appreciated if you can help with either of the > above > >>>> >> issues. > >>>> >> > >>>> >> > >>>> >> > >>>> >> Additionally, I have a few questions concerning your use cases at > Criteo. > >>>> >> IIUC, you are going to stay on Mesos in the foreseeable future, > while > >>>> >> keeping the Flink version up-to-date? What Flink version are you > currently > >>>> >> using? How often do you upgrade (e.g., every release)? Would you > be good > >>>> >> with keeping the Flink on Mesos component as it is (means that > deployment > >>>> >> and resource management improvements may not be ported to Mesos), > while > >>>> >> keeping other components up-to-date (e.g., improvements from > programming > >>>> >> APIs, operators, state backens, etc.)? > >>>> >> > >>>> >> > >>>> >> > >>>> >> Thank you~ > >>>> >> > >>>> >> Xintong Song > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> On Sat, Oct 24, 2020 at 2:48 AM Lasse Nedergaard < > >>>> >> lassenedergaardfl...@gmail.com<mailto: > lassenedergaardfl...@gmail.com>> > >>>> >> wrote: > >>>> >> > >>>> >> Hi > >>>> >> > >>>> >> > >>>> >> > >>>> >> At Trackunit We have been using Mesos for long time but have now > moved to > >>>> >> k8s. > >>>> >> > >>>> >> Med venlig hilsen / Best regards > >>>> >> > >>>> >> Lasse Nedergaard > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> Den 23. okt. 2020 kl. 17.01 skrev Robert Metzger < > rmetz...@apache.org > >>>> >> <mailto:rmetz...@apache.org>>: > >>>> >> > >>>> >> > >>>> >> > >>>> >> Hey Piyush, > >>>> >> > >>>> >> thanks a lot for raising this concern. I believe we should keep > Mesos in > >>>> >> Flink then in the foreseeable future. > >>>> >> > >>>> >> Your offer to help is much appreciated. We'll let you know once > there is > >>>> >> something. > >>>> >> > >>>> >> > >>>> >> > >>>> >> On Fri, Oct 23, 2020 at 4:28 PM Piyush Narang <p.nar...@criteo.com > >>>> >> <mailto:p.nar...@criteo.com>> wrote: > >>>> >> > >>>> >> Thanks Kostas. If there's items we can help with, I'm sure we'd be > able > >>>> >> to find folks who would be excited to contribute / help in any way. > >>>> >> > >>>> >> -- Piyush > >>>> >> > >>>> >> > >>>> >> On 10/23/20, 10:25 AM, "Kostas Kloudas" <kklou...@gmail.com > <mailto: > >>>> >> kklou...@gmail.com>> wrote: > >>>> >> > >>>> >> Thanks Piyush for the message. > >>>> >> After this, I revoke my +1. I agree with the previous opinions > that we > >>>> >> cannot drop code that is actively used by users, especially if > it > >>>> >> something that deep in the stack as support for cluster > management > >>>> >> framework. > >>>> >> > >>>> >> Cheers, > >>>> >> Kostas > >>>> >> > >>>> >> On Fri, Oct 23, 2020 at 4:15 PM Piyush Narang < > p.nar...@criteo.com > >>>> >> <mailto:p.nar...@criteo.com>> wrote: > >>>> >> > > >>>> >> > Hi folks, > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > We at Criteo are active users of the Flink on Mesos resource > >>>> >> management component. We are pretty heavy users of Mesos for > scheduling > >>>> >> workloads on our edge datacenters and we do want to continue to be > able to > >>>> >> run some of our Flink topologies (to compute machine learning > short term > >>>> >> features) on those DCs. If possible our vote would be not to drop > Mesos > >>>> >> support as that will tie us to an old release / have to maintain a > fork as > >>>> >> we’re not planning to migrate off Mesos anytime soon. Is the burden > >>>> >> something that can be helped with by the community? (Or are you > referring > >>>> >> to having to ensure PRs handle the Mesos piece as well when they > touch the > >>>> >> resource managers?) > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > Thanks, > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > -- Piyush > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > From: Till Rohrmann <trohrm...@apache.org<mailto: > >>>> >> trohrm...@apache.org>> > >>>> >> > Date: Friday, October 23, 2020 at 8:19 AM > >>>> >> > To: Xintong Song <tonysong...@gmail.com<mailto: > >>>> >> tonysong...@gmail.com>> > >>>> >> > Cc: dev <d...@flink.apache.org<mailto:d...@flink.apache.org>>, > user < > >>>> >> user@flink.apache.org<mailto:user@flink.apache.org>> > >>>> >> > Subject: Re: [SURVEY] Remove Mesos support > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > Thanks for starting this survey Robert! I second Konstantin > and > >>>> >> Xintong in the sense that our Mesos user's opinions should matter > most > >>>> >> here. If our community is no longer using the Mesos integration, > then I > >>>> >> would be +1 for removing it in order to decrease the maintenance > burden. > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > Cheers, > >>>> >> > > >>>> >> > Till > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > On Fri, Oct 23, 2020 at 2:03 PM Xintong Song < > tonysong...@gmail.com > >>>> >> <mailto:tonysong...@gmail.com>> wrote: > >>>> >> > > >>>> >> > +1 for adding a warning in 1.12 about planning to remove > Mesos > >>>> >> support. > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > With my developer hat on, removing the Mesos support would > >>>> >> definitely reduce the maintaining overhead for the deployment and > resource > >>>> >> management related components. On the other hand, the Flink on > Mesos users' > >>>> >> voices definitely matter a lot for this community. Either way, it > would be > >>>> >> good to draw users attention to this discussion early. > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > Thank you~ > >>>> >> > > >>>> >> > Xintong Song > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > > >>>> >> > On Fri, Oct 23, 2020 at 7:53 PM Konstantin Knauf < > kna...@apache.org > >>>> >> <mailto:kna...@apache.org>> wrote: > >>>> >> > > >>>> >> > Hi Robert, > >>>> >> > > >>>> >> > +1 to the plan you outlined. If we were to drop support in > Flink > >>>> >> 1.13+, we > >>>> >> > would still support it in Flink 1.12- with bug fixes for > some time > >>>> >> so that > >>>> >> > users have time to move on. > >>>> >> > > >>>> >> > It would certainly be very interesting to hear from current > Flink > >>>> >> on Mesos > >>>> >> > users, on how they see the evolution of this part of the > ecosystem. > >>>> >> > > >>>> >> > Best, > >>>> >> > > >>>> >> > Konstantin > >>>> >> > >>>> > > >>> > >>> > >>> > >>> -- > >>> > >>> Konstantin Knauf > >>> > >>> https://twitter.com/snntrable > >>> > >>> https://github.com/knaufk >
