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From "John D. Ament" <>
Subject Re: Call for a new mentor for Apache Slider
Date Wed, 31 May 2017 00:29:37 GMT

Thanks for the response, it helps give some more context.  I also like
Josh's email.  It probably better describes my point of view.  I also
selfishly don't want the incubator to be stuck with many podlings that we
already know what's going to happen with.

On Thu, May 25, 2017 at 11:50 AM Billie Rinaldi <> wrote:

> On 2017-05-25 03:49, John D. Ament <> wrote:
> > It seems like there's a lot of confusion about who's doing what in
> Slider.
> > I'm really hoping the following comments can be addressed, since it looks
> > like they've been lost in the shuffle (the last is a new one from me):
> >
> > - What does it mean for Slider to be a module of Hadoop?  Are there any
> > public discussions about how this has happened or will happen?
> There was a cross-posted discussion on Slider and YARN dev lists [1] and an
> earlier discussion on the Slider dev list [2]. There was also an
> announcement in our August 2016 board report [3], as well as updates
> provided in our subsequent board reports.
Ok, thanks.  As a note, it seems like these should have been flagged but
weren't.  We need to do a bit better to do deep analysis of the reports
coming in.

> > - If you are in fact becoming a module of Hadoop, is there a time frame
> for
> > that?  Slider has been in the incubator for 3 years now.  It seems like
> > Slider is semi-active, but not frequent to release.
> Based on our earlier discussions, we would like Slider users to have a
> viable alternative before the existing Slider codebase is retired. The work
> is ongoing in the yarn-native-services feature branch of Hadoop to convert
> slider-core to a submodule of Hadoop and implement the main functions of
> the slider-agent in the YARN NodeManager or in slider-core. I do not have a
> time estimate for when we might be ready to call a vote to merge the
> feature branch into hadoop trunk. I can point out that a lot of subtasks of
> YARN-5079 have been completed, and I hope this work will not take too many
> more months.
This I think is where Josh's sentiments come in.  I think at this point,
the most complete solution is to have Slider transition into Hadoop,
however the Hadoop PMC chooses to manage the project. I believe some of you
are already on the PMC so it may be OK.

I want to make something very clear.  I am not saying we don't want Slider
in the incubator.  I am saying that I think Slider would grow more if it
were outside the incubator and perhaps within a project focused on
delivering these solutions.  You would gain the benefit of single vote on
releases, since its clear you know how to do this.


> > - Vinod as a mentor seems a bit confusing.  He's listed already as per
> > Taylor, so will he by being added to podlings.xml be signing off on
> > reports?  Are there any discussions you can cite where mentors are saying
> > they are not available and have you asked them to step down?
> Vinod was not actually a mentor for Slider. He was the champion of the
> incubator proposal for Slider, so I think he inadvertently got listed as a
> mentor on some of the Slider pages, but (correctly) he was not in the
> podlings.xml file.
> When we email mentors directly asking them to sign off on a report,
> sometimes we get no response (as evidenced in the occasional lack of sign
> offs on Slider reports). No one has said they are not available. If we need
> to ask some of the existing mentors to step down to be able to add new
> mentors, we could do that.
> [1]:
> [2]:
> [3]:

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