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Hadoop >> mail # dev >> RE: [Vote] Merge branch-trunk-win to trunk


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Re: [Vote] Merge branch-trunk-win to trunk
+1 (non-binding)

I've been testing and patching this branch for the past several months, and
I believe we've reached stability for a merge to trunk.  I want to point
out once again that the branch has been tested on Linux to build confidence
that regressions were not introduced on existing platforms.  I also want to
second the comments from Bikas about how wonderful the collaboration has
been!

Thank you,
--Chris
On Tue, Feb 26, 2013 at 4:30 PM, Bikas Saha <[EMAIL PROTECTED]> wrote:

> +1
>
> As someone who has been part of this effort from inception, I am glad that
> we have reached this stable state in the project on both branches of
> Hadoop.
> It has been a great collaboration across teams and engineers and opens up
> Hadoop to a whole new set of deployments and developers!
>
> Bikas
>
> -----Original Message-----
> From: Suresh Srinivas [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, February 26, 2013 2:56 PM
> To: [EMAIL PROTECTED]
> Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED];
> [EMAIL PROTECTED]
> Subject: [Vote] Merge branch-trunk-win to trunk
>
> I had posted heads up about merging branch-trunk-win to trunk on Feb 8th.
> I am happy to announce that we are ready for the merge.
>
> Here is a brief recap on the highlights of the work done:
> - Command-line scripts for the Hadoop surface area
> - Mapping the HDFS permissions model to Windows
> - Abstracted and reconciled mismatches around differences in Path
> semantics in Java and Windows
> - Native Task Controller for Windows
> - Implementation of a Block Placement Policy to support cloud
> environments, more specifically Azure.
> - Implementation of Hadoop native libraries for Windows (compression
> codecs, native I/O)
> - Several reliability issues, including race-conditions, intermittent test
> failures, resource leaks.
> - Several new unit test cases written for the above changes
>
> Please find the details of the work in CHANGES.branch-trunk-win.txt -
> Common changes<http://bit.ly/Xe7Ynv>, HDFS changes<http://bit.ly/13QOSo9>,
> and YARN and MapReduce changes <http://bit.ly/128zzMt>. This is the work
> ported from branch-1-win to a branch based on trunk.
>
> For details of the testing done, please see the thread -
> http://bit.ly/WpavJ4. Merge patch for this is available on HADOOP-8562<
> https://issues.apache.org/jira/browse/HADOOP-8562>.
>
> This was a large undertaking that involved developing code, testing the
> entire Hadoop stack, including scale tests. This is made possible only
> with the contribution from many many folks in the community. Following
> people contributed to this work: Ivan Mitic, Chuan Liu, Ramya Sunil, Bikas
> Saha, Kanna Karanam, John Gordon, Brandon Li, Chris Nauroth, David Lao,
> Sumadhur Reddy Bolli, Arpit Agarwal, Ahmed El Baz, Mike Liddell, Jing
> Zhao, Thejas Nair, Steve Maine, Ganeshan Iyer, Raja Aluri, Giridharan
> Kesavan, Ramya Bharathi Nimmagadda, Daryn Sharp, Arun Murthy, Tsz-Wo
> Nicholas Sze, Suresh Srinivas and Sanjay Radia. There are many others who
> contributed as well providing feedback and comments on numerous jiras.
>
> The vote will run for seven days and will end on March 5, 6:00PM PST.
>
> Regards,
> Suresh
>
>
>
>
> On Thu, Feb 7, 2013 at 6:41 PM, Mahadevan Venkatraman
> <[EMAIL PROTECTED]>wrote:
>
> > It is super exciting to look at the prospect of these changes being
> > merged to trunk. Having Windows as one of the supported Hadoop
> > platforms is a fantastic opportunity both for the Hadoop project and
> Microsoft customers.
> >
> > This work began around a year back when a few of us started with a
> > basic port of Hadoop on Windows. Ever since, the Hadoop team in
> > Microsoft have made significant progress in the following areas:
> > (PS: Some of these items are already included in Suresh's email, but
> > including again for completeness)
> >
> > - Command-line scripts for the Hadoop surface area
> > - Mapping the HDFS permissions model to Windows
> > - Abstracted and reconciled mismatches around differences in Path