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From Anirudh <anirudh2...@gmail.com>
Subject Re: Reverting pull request
Date Fri, 15 Jun 2018 23:07:38 GMT
Hi,

We can have a separate discussion on whether this was a friendly way to
bring this up or not,
but I don't see why we shouldn't roll back, share design on dev, fix the
bug and add performance benchmarking results and call for reviews on
a new PR. This seems to be a big change which was introduced and I have
seen Eric himself rolling back PRs
for big changes which happen to have a regression or insufficient tests. To
quote Eric from here
https://github.com/apache/incubator-mxnet/pull/8010 : "Roll
back is always better than fix forward."
I agree with Marco that we should abide by the rules which we set for other
contributors.
If the argument is that users depend on the change since it has been
introduced a few days ago, then the assumption with depending on the master
is always that it is bleeding edge and things can break.

Anirudh

On Fri, Jun 15, 2018 at 3:10 PM, Mu Li <muli.cmu@gmail.com> wrote:

> Hi Marco,
>
> You really want to bring it into Amazon internal planning meeting. I have
> been requesting to focus on fixing bugs for several weeks, instead of
> adding new features. But I didn't get a concrete time when it will happen.
>
> Best
> Mu
>
> On Fri, Jun 15, 2018 at 3:03 PM, Marco de Abreu <
> marco.g.abreu@googlemail.com.invalid> wrote:
>
> > CI doesn't fail for no reason but because some people prefer to push new
> > features than to get our codebase actually stable. We currently have 51
> [1]
> > flaky tests and I have only seen a few people (thanks Sheng, Alex and
> > Pedro) work on the problem. So instead of complaining, take part and help
> > improving the situation.
> >
> > The CCache/EFS failure lasted for 12 hours and was an error - these
> things
> > happen when you run a service. This is not a blame-game.
> >
> > -Marco
> >
> > [1]:
> > https://github.com/apache/incubator-mxnet/issues?q=is%
> > 3Aopen+is%3Aissue+label%3AFlaky
> >
> > On Fri, Jun 15, 2018 at 2:55 PM Eric Xie <jxie@apache.org> wrote:
> >
> > > Hi Marco de Abreu,
> > >
> > > CI has been totally broken recently. It randomly fails for no good
> reason
> > > more often than it passes. For example the ccache/efs failure has been
> > > really annoying.
> > >
> > > Looks like there has been many changes to Jenkins and Docker lately. Do
> > > you think we should revert all of the recent changes to get a stable CI
> > or
> > > do you think someone should find a fix for the bugs?
> > >
> > > Thanks,
> > > Eric
> > >
> > > On 2018/06/15 21:21:50, Marco de Abreu <marco.g.abreu@googlemail.com.
> > INVALID>
> > > wrote:
> > > > We revert a PR because it should not have been merged in the first
> > place.
> > > > So far, I have been ignoring the fact that our committers are
> > constantly
> > > > breaking our own rules (which we expect contributors to follow). But
> > > since
> > > > this caused an impact twice (1.2 breaking change about model
> > > import/export
> > > > as well as this regression), I'm now being more strict and enforcing
> > > them.
> > > >
> > > > I could've also made a script that prevents any PR from being
> > > self-merged,
> > > > but I thought our committers are responsible enough to follow our own
> > > rules
> > > > without systems actually enforcing them. I won't waste my time
> working
> > on
> > > > that script, but from now on I will revert every single PR (except
> > > > emergency cases) that has been self-merged without approval.
> > > >
> > > > -Marco
> > > >
> > > > On Fri, Jun 15, 2018 at 2:15 PM Mu Li <muli.cmu@gmail.com> wrote:
> > > >
> > > > > Why reverting instead of fixing the bugs? Static memory aims to
> > reduce
> > > > > memory allocation, it's a key feature to bridge the perf gap
> between
> > > gluon
> > > > > and symbol.
> > > > >
> > > > > On Fri, Jun 15, 2018 at 2:06 PM, Marco de Abreu <
> > > > > marco.g.abreu@googlemail.com.invalid> wrote:
> > > > >
> > > > > > Hello,
> > > > > >
> > > > > > I'm reverting https://github.com/apache/
> incubator-mxnet/pull/10817
> > > as of
> > > > > > https://github.com/apache/incubator-mxnet/pull/11311 due to
> > > regressions
> > > > > > described in https://github.com/apache/
> > incubator-mxnet/issues/11171
> > > and
> > > > > > https://github.com/apache/incubator-mxnet/pull/10817.
> > > > > >
> > > > > > The pull request has been self-merged without proper review
and
> > > > > introduced
> > > > > > regressions. Committers should act as role models in this project
> > and
> > > > > > adhere to software engineer best practices.
> > > > > >
> > > > > > Best regards,
> > > > > > Marco
> > > > > >
> > > > >
> > > >
> > >
> >
>

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