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Posted to dev@ratis.apache.org by Rui Wang <am...@apache.org> on 2021/01/27 05:09:06 UTC
[Proposal] Support Learner (non-voting member) in Ratis
Hi Community,
I am thinking that we can start to add the non-voting member, or leaner
that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
The leaner is useful to maintain high availability when new servers join
Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we have also
discussed the possibility to utilize leaner as the tool to replace SCM
nodes online.
What do you think? Any objection or concern to not support leaner in
Ratis?
[1]: https://github.com/ongardie/dissertation
Thanks,
Rui Wang
Re: [Proposal] Support Learner (non-voting member) in Ratis
Posted by Jitendra Pandey <jn...@gmail.com>.
+1, it will be a useful feature.
On Wed, Jan 27, 2021 at 10:38 AM Rui Wang <am...@apache.org> wrote:
> Thanks everyone. I have created
> https://issues.apache.org/jira/browse/RATIS-1298
>
> I hope I can implement this in Feb/early march 2021 so we can consider this
> feature along with the progress of SCM HA.
>
> -Rui
>
> On Wed, Jan 27, 2021 at 4:10 AM Shashikant Banerjee <
> sbanerjee@cloudera.com>
> wrote:
>
> > +1
> >
> > Thanks
> > Shashi
> >
> > On Wed, Jan 27, 2021 at 5:22 PM Tsz Wo Sze <sz...@gmail.com> wrote:
> >
> >> +1. Thanks a lot for working on this.
> >>
> >> Tsz-Wo
> >>
> >> On Wed, Jan 27, 2021 at 3:33 PM runzhiwang <ru...@gmail.com>
> >> wrote:
> >>
> >> > +1
> >> >
> >> > When do you plan to implement this ? I can help review this.
> >> >
> >> > Rui Wang <am...@apache.org> 于2021年1月27日周三 下午1:09写道：
> >> >
> >> > > Hi Community,
> >> > >
> >> > > I am thinking that we can start to add the non-voting member, or
> >> leaner
> >> > > that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
> >> > >
> >> > > The leaner is useful to maintain high availability when new servers
> >> join
> >> > > Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we
> have
> >> > also
> >> > > discussed the possibility to utilize leaner as the tool to replace
> SCM
> >> > > nodes online.
> >> > >
> >> > > What do you think? Any objection or concern to not support leaner in
> >> > > Ratis?
> >> > >
> >> > >
> >> > > [1]: https://github.com/ongardie/dissertation
> >> > >
> >> > > Thanks,
> >> > > Rui Wang
> >> > >
> >> >
> >>
> >
>
Re: [Proposal] Support Learner (non-voting member) in Ratis
Posted by Rui Wang <am...@apache.org>.
Thanks everyone. I have created
https://issues.apache.org/jira/browse/RATIS-1298
I hope I can implement this in Feb/early march 2021 so we can consider this
feature along with the progress of SCM HA.
-Rui
On Wed, Jan 27, 2021 at 4:10 AM Shashikant Banerjee <sb...@cloudera.com>
wrote:
> +1
>
> Thanks
> Shashi
>
> On Wed, Jan 27, 2021 at 5:22 PM Tsz Wo Sze <sz...@gmail.com> wrote:
>
>> +1. Thanks a lot for working on this.
>>
>> Tsz-Wo
>>
>> On Wed, Jan 27, 2021 at 3:33 PM runzhiwang <ru...@gmail.com>
>> wrote:
>>
>> > +1
>> >
>> > When do you plan to implement this ? I can help review this.
>> >
>> > Rui Wang <am...@apache.org> 于2021年1月27日周三 下午1:09写道：
>> >
>> > > Hi Community,
>> > >
>> > > I am thinking that we can start to add the non-voting member, or
>> leaner
>> > > that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
>> > >
>> > > The leaner is useful to maintain high availability when new servers
>> join
>> > > Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we have
>> > also
>> > > discussed the possibility to utilize leaner as the tool to replace SCM
>> > > nodes online.
>> > >
>> > > What do you think? Any objection or concern to not support leaner in
>> > > Ratis?
>> > >
>> > >
>> > > [1]: https://github.com/ongardie/dissertation
>> > >
>> > > Thanks,
>> > > Rui Wang
>> > >
>> >
>>
>
Re: [Proposal] Support Learner (non-voting member) in Ratis
Posted by Shashikant Banerjee <sb...@cloudera.com.INVALID>.
+1
Thanks
Shashi
On Wed, Jan 27, 2021 at 5:22 PM Tsz Wo Sze <sz...@gmail.com> wrote:
> +1. Thanks a lot for working on this.
>
> Tsz-Wo
>
> On Wed, Jan 27, 2021 at 3:33 PM runzhiwang <ru...@gmail.com> wrote:
>
> > +1
> >
> > When do you plan to implement this ? I can help review this.
> >
> > Rui Wang <am...@apache.org> 于2021年1月27日周三 下午1:09写道：
> >
> > > Hi Community,
> > >
> > > I am thinking that we can start to add the non-voting member, or leaner
> > > that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
> > >
> > > The leaner is useful to maintain high availability when new servers
> join
> > > Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we have
> > also
> > > discussed the possibility to utilize leaner as the tool to replace SCM
> > > nodes online.
> > >
> > > What do you think? Any objection or concern to not support leaner in
> > > Ratis?
> > >
> > >
> > > [1]: https://github.com/ongardie/dissertation
> > >
> > > Thanks,
> > > Rui Wang
> > >
> >
>
Re: [Proposal] Support Learner (non-voting member) in Ratis
Posted by Tsz Wo Sze <sz...@gmail.com>.
+1. Thanks a lot for working on this.
Tsz-Wo
On Wed, Jan 27, 2021 at 3:33 PM runzhiwang <ru...@gmail.com> wrote:
> +1
>
> When do you plan to implement this ? I can help review this.
>
> Rui Wang <am...@apache.org> 于2021年1月27日周三 下午1:09写道：
>
> > Hi Community,
> >
> > I am thinking that we can start to add the non-voting member, or leaner
> > that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
> >
> > The leaner is useful to maintain high availability when new servers join
> > Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we have
> also
> > discussed the possibility to utilize leaner as the tool to replace SCM
> > nodes online.
> >
> > What do you think? Any objection or concern to not support leaner in
> > Ratis?
> >
> >
> > [1]: https://github.com/ongardie/dissertation
> >
> > Thanks,
> > Rui Wang
> >
>
Re: [Proposal] Support Learner (non-voting member) in Ratis
Posted by runzhiwang <ru...@gmail.com>.
+1
When do you plan to implement this ? I can help review this.
Rui Wang <am...@apache.org> 于2021年1月27日周三 下午1:09写道：
> Hi Community,
>
> I am thinking that we can start to add the non-voting member, or leaner
> that is proposed in Raft thesis 4.2.1 (you can find a copy at [1]).
>
> The leaner is useful to maintain high availability when new servers join
> Raft ring (details at thesis 4.2.1). For Ozone SCM HA effort, we have also
> discussed the possibility to utilize leaner as the tool to replace SCM
> nodes online.
>
> What do you think? Any objection or concern to not support leaner in
> Ratis?
>
>
> [1]: https://github.com/ongardie/dissertation
>
> Thanks,
> Rui Wang
>