That makes sense to me. It would be good for us to provide support without completely focusing all development effort on a HW platform with fewer users.
If ppc64le support lands in 2.10, and between 2.10 and 2.11 the ppc64le tests start breaking for reasons nobody with HW access can debug, should we say in 2.11 release notes that ppc64le is no longer supported? Or perhaps, even in the first release where we think it works, we should spell it out as a platform with only "best-effort" support, that way we don't have to retract support? On Mon, Apr 17, 2017 at 2:41 PM, Marcel Kornacker <[email protected]> wrote: > My main concern is that we don't unduly burden the development process. As > such, it makes a lot of sense to keep the PPC tests out of the regular > tests and have the party that's interested in the PPC tests create the > infrastructure and run those tests. > > On Mon, Apr 17, 2017 at 2:30 PM, Jim Apple <[email protected]> wrote: > > > One concern I have is sustainability. If only one Impala contributor can > > work with ppc64le, and that contributor is not as seasoned as some of the > > other committers, what happens if ppc64le breaks and the one person with > VM > > access can't fix it? > > > > Part of my concern is just how flaky the current tests are, too. It takes > > some time to be able to distinguish broken tests that are flaky and > broken > > tests that are the result of a specific commit. > > > > My hope was that with a ppc64le VM (maybe through Qemu?) that runs on > > x86-64 Linux, the other contributors could help fix things that broke on > > that platform. > > > > On Mon, Apr 17, 2017 at 12:51 PM, Marcel Kornacker <[email protected]> > > wrote: > > > > > +1 > > > > > > On Mon, Apr 17, 2017 at 11:56 AM, Henry Robinson <[email protected]> > > > wrote: > > > > > > > +1 > > > > > > > > On Mon, Apr 17, 2017 at 9:09 AM Tim Armstrong < > [email protected] > > > > > > > wrote: > > > > > > > > > I feel like we shouldn't make PPC part of pre-commit at least > > > initially - > > > > > it's an unreasonable barrier if contributors/committers to debug > > issues > > > > on > > > > > a platform they don't have easy access to. Having the testing infra > > is > > > > > still important because we don't want to have code in there that > will > > > > > gradually bit-rot without us noticing. > > > > > > > > > > On Mon, Apr 17, 2017 at 8:51 AM, Silvius Rus <[email protected]> > > > wrote: > > > > > > > > > > > Would it make sense to _not_ run PPC tests as part of presubmit? > > > > Instead > > > > > > Valencia could set up nightly tests using in-house > infrastructure. > > > And > > > > > > share the test results, e.g., by sending them to a new email list > > > > > > [email protected] (that we'd need to create) so > > > > everyone > > > > > > can see when there are failures or if coverage stops for whatever > > > > reason. > > > > > > GCC has been doing something like this for long, > > > > > > https://gcc.gnu.org/ml/gcc-testresults/2017-04/. > > > > > > > > > > > > On Tue, Apr 11, 2017 at 9:44 AM, Jim Apple <[email protected] > > > > > > wrote: > > > > > > > > > > > > > > > > > > > > > > Locally, I work on native-toolchain using a VM configured > with > > > > > > > > Ubuntu16.04ppc64le, 4GB RAM and 50GB of HDD. If we provide > > you a > > > > VM > > > > > > with > > > > > > > > this config, will it be sufficient ? > > > > > > > > > > > > > > > > > > > > > > What hypervisor/emulator will it use? > > > > > > > > > > > > > > What are the requirements of the host OS and host hardware? > > > > > > > > > > > > > > Why is the config you have it set to so important that you > > mention > > > it > > > > > in > > > > > > > your email - will the config be locked down into that config or > > can > > > > it > > > > > be > > > > > > > reconfigured later? > > > > > > > > > > > > > > How is the VM controlled from the host OS? Keep in mind that a > > GUI > > > > > cannot > > > > > > > be the only option for automated tests. > > > > > > > > > > > > > > FWIW, Impala's test suite probably cannot fully complete > without > > at > > > > > least > > > > > > > 8, and I suspect 16, GB of RAM, and we might need more disk > > space, > > > > too, > > > > > > but > > > > > > > these should be reconfigurable with most hypervisors/emulators. > > > > > > > > > > > > > > > > > > > > > > -- > > > > Henry Robinson > > > > Software Engineer > > > > Cloudera > > > > 415-994-6679 > > > > > > > > > >
