[yocto] Annoying "rerun to fix" bug for bitbake: task failed, but rerun can fix it.

[Jerry Lian]

I am not talking about my own layer or recipe.
It happens even when I run the demo QEMU/beaglebone builds.
(I just download poky, and make NO modifications)

On Wed, Nov 8, 2017 at 11:15 AM, Nicolas Dechesne <
nicolas.dechesne at linaro.org> wrote:

> On Wed, Nov 8, 2017 at 5:13 PM, Jerry Lian <jerry.lian at gmail.com> wrote:
> > So according to what you said: the build will fail no matter what.
> > But that is not my observation: my build succeed eventually (but you just
> > need to rerun many times)!!!
>
> ah. sorry, i missed that part. So then it's probably a bug in the
> recipe, missing dependency or something along these lines. It would be
> legit to report this bug then.
>
>
> >
> > On Wed, Nov 8, 2017 at 10:53 AM, Nicolas Dechesne
> > <nicolas.dechesne at linaro.org> wrote:
> >>
> >> On Wed, Nov 8, 2017 at 4:49 PM, Jerry Lian <jerry.lian at gmail.com>
> wrote:
> >> > I am not sure whether it is a bug or an error:
> >> > * Quite often, bitbake will fail before finishing, with message like:
> >> > ...
> >> > task failed with exit code 1...
> >> > * But if you rerun bitbake, it will continue to build.
> >> > * So sometimes I have to rerun many times for finish one build ----
> >> > annoying!
> >> > (by the way, my CPU can run 16 threads)
> >> >
> >> > Any idea to clear this annoying bug?
> >>
> >> it's not a bug. bitbake is using parallel tasks a lot. At any time it
> >> is running N tasks. When one task fails, it will wait for N-1 ongoing
> >> tasks to finish, and then stops.
> >>
> >> If you restart again, it will likely try N new tasks again, and the
> >> same task that failed,  will fail again, it will wait for N-1 tasks to
> >> complete.
> >>
> >> if you do that several times, you will  end up in a situation where
> >> the only task that can run is the 'failing' one, so it will try 1 task
> >> and fail immediately.
> >>
> >> > thanks.
> >> >
> >> > --
> >> > _______________________________________________
> >> > yocto mailing list
> >> > yocto at yoctoproject.org
> >> > https://lists.yoctoproject.org/listinfo/yocto
> >> >
> >
> >
>
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