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Posted to common-dev@hadoop.apache.org by Karthik Kambatla <ka...@cloudera.com> on 2013/04/26 19:21:52 UTC

Use hadoop.relaxed.worker.version.check to allow versions in the same major version?

Hi devs,

Given that we have API compatibility within a major release, I was
wondering if it would make sense to augment the worker version check to
allow workers from a different minor/point release in the same major
release? The motivation for this is rolling upgrade within a major release.

We could use the same property hadoop.relaxed.worker.version.check for this
or add another property. Thoughts?

Thanks
Karthik

Re: Use hadoop.relaxed.worker.version.check to allow versions in the same major version?

Posted by Karthik Kambatla <ka...@cloudera.com>.

Thanks for the pointers, Eli. Glad HDFS already takes care of this - I ll
follow up on the MR JIRA.


On Fri, Apr 26, 2013 at 11:09 AM, Eli Collins <el...@cloudera.com> wrote:

> Hey Karthik,
>
> We already support this for HDFS, see HDFS-2983 (Relax the build
> version check to permit rolling upgrades within a release).
> We should do so for Yarn as well, MAPREDUCE-4150 tracks this.  I don't
> think Ahmed is working on it so would be great for you or someone else
> to take it.
>
> Thanks,
> Eli
>
> On Fri, Apr 26, 2013 at 10:21 AM, Karthik Kambatla <ka...@cloudera.com>
> wrote:
> > Hi devs,
> >
> > Given that we have API compatibility within a major release, I was
> > wondering if it would make sense to augment the worker version check to
> > allow workers from a different minor/point release in the same major
> > release? The motivation for this is rolling upgrade within a major
> release.
> >
> > We could use the same property hadoop.relaxed.worker.version.check for
> this
> > or add another property. Thoughts?
> >
> > Thanks
> > Karthik
>

Re: Use hadoop.relaxed.worker.version.check to allow versions in the same major version?

Posted by Eli Collins <el...@cloudera.com>.

Hey Karthik,

We already support this for HDFS, see HDFS-2983 (Relax the build
version check to permit rolling upgrades within a release).
We should do so for Yarn as well, MAPREDUCE-4150 tracks this.  I don't
think Ahmed is working on it so would be great for you or someone else
to take it.

Thanks,
Eli

On Fri, Apr 26, 2013 at 10:21 AM, Karthik Kambatla <ka...@cloudera.com> wrote:
> Hi devs,
>
> Given that we have API compatibility within a major release, I was
> wondering if it would make sense to augment the worker version check to
> allow workers from a different minor/point release in the same major
> release? The motivation for this is rolling upgrade within a major release.
>
> We could use the same property hadoop.relaxed.worker.version.check for this
> or add another property. Thoughts?
>
> Thanks
> Karthik