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From Bikas Saha <bi...@hortonworks.com>
Subject Re: Heads Up - hadoop-2.0.3 release
Date Tue, 20 Nov 2012 05:18:43 GMT
+1 for the API changes. We need to be careful about back-compat but at the
same time the API's are the core of YARN and there seem to be some issues
around it.

Bikas 

On 11/19/12 10:09 AM, "Siddharth Seth" <seth.siddharth@gmail.com> wrote:

>YARN-142/MAPREDUCE-4067 should ideally be fixed before we commit to API
>backward compatibility. Also, from the recent YARN meetup - there seemed
>to
>be a requirement to change the AM-RM protocol for container requests. In
>this case, I believe it's OK to not have all functionality implemented, as
>long as the protocol itself can represent the requirements. However, as
>Bobby pointed out, given the current adoption by other projects -
>incompatible changes at this point can be problematic and needs to be
>figured out.
>
>Thanks
>- Sid
>
>
>On Mon, Nov 19, 2012 at 8:22 AM, Robert Evans <evans@yahoo-inc.com> wrote:
>
>> I am OK with removing the alpha assuming that we think that the APIs are
>> stable enough that we are willing to truly start maintaining backwards
>> compatibility on them within 2.X. From what I have seen I think that
>>they
>> are fairly stable and I think there is enough adoption by other projects
>> right now that breaking backwards compatibility would be problematic.
>>
>> --Bobby Evans
>>
>> On 11/16/12 11:34 PM, "Stack" <stack@duboce.net> wrote:
>>
>> >On Fri, Nov 16, 2012 at 3:38 PM, Aaron T. Myers <atm@cloudera.com>
>>wrote:
>> >> Hi Arun,
>> >>
>> >> Given that the 2.0.3 release is intended to reflect the growing
>> >>stability
>> >> of YARN, and the QJM work will be included in 2.0.3 which provides a
>> >> complete HDFS HA solution, I think it's time we consider removing the
>> >> "-alpha" label from the release version. My preference would be to
>> >>remove
>> >> the label entirely, but we could also perhaps call it "-beta" or
>> >>something.
>> >>
>> >> Thoughts?
>> >>
>> >
>> >I think it fine after two minor releases undoing the '-alpha' suffix.
>> >
>> >If folks insist we next go to '-beta', I'd hope we'd travel all
>> >remaining 22 letters of the greek alphabet before we 2.0.x.
>> >
>> >St.Ack
>>
>>



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