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From Christopher <ctubb...@apache.org>
Subject Re: i686 support
Date Fri, 17 Jun 2016 21:45:05 GMT
It's possible it's a problem with the Fedora-packaged Maven or the jar
plugin. However, I was able to do a mock build (mock in Fedora uses
containers) to build it fine on x86_64. I've been given a hint as to how to
tell mock to use a different arch, but haven't yet had a chance to try it.

Mainly, I just want to make sure it's supported upstream. If it's not, and
never will be, then I can use ExcludeArch in the RPM spec. Otherwise, I've
gotta try to figure out why it's broken.

On Thu, Jun 16, 2016 at 4:31 PM Chris Nauroth <cnauroth@hortonworks.com>

> Thank you for sharing that.
> I was expecting to see some kind of failure in building our C codebase,
> where a 32-bit vs. 64-bit portability problem is likely to happen.
> Instead, that's a failure in Maven's handling of a jar dependency.  I tried
> building from the 2.4.0 source, and I couldn't reproduce the problem.
> Is it possible that this is a problem specific to the Maven version
> running your build?  The BUILDING.txt file in the root of the source tree
> has details on what tools and what versions are required for the build.
> --Chris Nauroth
> From: Christopher <ctubbsii@apache.org>
> Date: Thursday, June 16, 2016 at 12:48 PM
> To: Chris Nauroth <cnauroth@hortonworks.com>, "user@hadoop.apache.org" <
> user@hadoop.apache.org>
> Subject: Re: i686 support
> Well, the error I got was:
> [ERROR] Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:3.0.1:jar (default-jar)
on project hadoop-yarn-applications-distributedshell: You have to use a classifier to attach
supplemental artifacts to the project instead of replacing them. -> [Help 1]
> https://kojipkgs.fedoraproject.org//work/tasks/1712/14521712/build.log
> I'm not sure if this is a Fedora-specific problem (due to its dependency
> convergence and the specific version of the maven-jar-plugin, for example),
> or if it's an upstream problem. This was version 2.4.1. Right now, I'm just
> trying to stabilize the currently packaged 2.4 version, before I begin
> moving towards an upgrade path for users to migrate to a newer version
> (2.6, probably). It's just that I'm a bit overwhelmed with Hadoop's build
> and quantity of components.
> Not sure where to begin looking.
> On Thu, Jun 16, 2016 at 3:42 PM Chris Nauroth <cnauroth@hortonworks.com>
> wrote:
>> Hello Christopher,
>> While 64-bit is certainly the common case at this point, we also have
>> produced 32-bit builds in the past.  I'm not aware of any conscious choice
>> by the community to halt 32-bit support, so if that's not working, then it
>> might be a bug.  Do you have more details on the build failure?  That might
>> help us confirm if it's a bug, and if so, move to tracking it in an Apache
>> JIRA.
>> --Chris Nauroth
>> From: Christopher <ctubbsii@apache.org>
>> Date: Thursday, June 16, 2016 at 12:35 PM
>> To: "user@hadoop.apache.org" <user@hadoop.apache.org>
>> Subject: i686 support
>> Hi,
>> Is i686 a supported arch by the upstream Hadoop developers? I'm trying to
>> package hadoop RPMs for Fedora (reviving somebody else's previous efforts),
>> and can't get things to build on i686. Is this normal? Does upstream care
>> about 32-bit users? What about release testing on i686?
>> I normally wouldn't care about 32-bit, but Fedora packaging standards
>> encourage me to get it to work for all core architectures supported by
>> Fedora.
>> Has anybody else done any 32-bit packaging that could help me
>> troubleshoot? I don't even own 32-bit hardware. (Even better if you want to
>> help co-maintain Hadoop in Fedora.. that would be awesome).

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