+1 non-binding. I have extensively tested this on both Windows and Linux over the last few months.
Thanks, -Arpit On Wed, Feb 27, 2013 at 11:56 AM, Eli Collins <e...@cloudera.com> wrote: > Bobby raises some good questions. A related one, since most current > developers won't add Windows support for new features that are > platform specific is it assumed that Windows development will either > lag or will people actively work on keeping Windows up with the > latest? And vice versa in case Windows support is implemented first. > > Is there a jira for resolving the outstanding TODOs in the code base > (similar to HDFS-2148)? Looks like this merge doesn't introduce many > which is great (just did a quick diff and grep). > > Thanks, > Eli > > On Wed, Feb 27, 2013 at 8:17 AM, Robert Evans <ev...@yahoo-inc.com> wrote: > > After this is merged in is Windows still going to be a second class > > citizen but happens to work for more than just development or is it a > > fully supported platform where if something breaks it can block a > release? > > How do we as a community intend to keep Windows support from breaking? > > We don't have any Jenkins slaves to be able to run nightly tests to > > validate everything still compiles/runs. This is not a blocker for me > > because we often rely on individuals and groups to test Hadoop, but I do > > think we need to have this discussion before we put it in. > > > > --Bobby > > > > On 2/26/13 4:55 PM, "Suresh Srinivas" <sur...@hortonworks.com> wrote: > > > >>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 > >><mah...@microsoft.com>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 > >>> 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 > >>> > >>> In the process, we have closely engaged with the Apache open source > >>> community and have got great support and assistance from the community > >>>in > >>> terms of contributing fixes, code review comments and commits. > >>> > >>> In addition, the Hadoop team at Microsoft has also made good progress > in > >>> other projects including Hive, Pig, Sqoop, Oozie, HCat and HBase. Many > >>>of > >>> these changes have already been committed to the respective trunks with > >>> help from various committers and contributors. It is great to see the > >>> commitment of the community to support multiple platforms, and we look > >>> forward to the day when a developer/customer is able to successfully > >>>deploy > >>> a complete solution stack based on Apache Hadoop releases. > >>> > >>> Next Steps: > >>> > >>> All of the above changes are part of the Windows Azure HDInsight and > >>> HDInsight Server products from Microsoft. We have successfully > >>>on-boarded > >>> several internal customers and have been running production workloads > on > >>> Windows Azure HDInsight. Our vision is to create a big data platform > >>>based > >>> on Hadoop, and we are committed to helping make Hadoop a world-class > >>> solution that anyone can use to solve their biggest data challenges. > >>> > >>> As an immediate next step, we would like to have a discussion around > how > >>> we can ensure that the quality of the mainline Hadoop branches on > >>>Windows > >>> is maintained. To this end, we would like to get to the state where we > >>>have > >>> pre-checkin validation gates and nightly test runs enabled on Windows. > >>>If > >>> you have any suggestions around this, please do send an email. We are > >>> committed to helping sustain the long-term quality of Hadoop on both > >>>Linux > >>> and Windows. > >>> > >>> We sincerely thank the community for their contribution and support so > >>> far. And hope to continue having a close engagement in the future. > >>> > >>> -Microsoft HDInsight Team > >>> > >>> > >>> -----Original Message----- > >>> From: Suresh Srinivas [mailto:sur...@hortonworks.com] > >>> Sent: Thursday, February 7, 2013 5:42 PM > >>> To: common-...@hadoop.apache.org; yarn-...@hadoop.apache.org; > >>> hdfs-dev@hadoop.apache.org; mapreduce-...@hadoop.apache.org > >>> Subject: Heads up - merge branch-trunk-win to trunk > >>> > >>> The support for Hadoop on Windows was proposed in HADOOP-8079< > >>> https://issues.apache.org/jira/browse/HADOOP-8079> almost a year ago. > >>>The > >>> goal was to make Hadoop natively integrated, full-featured, and > >>>performance > >>> and scalability tuned on Windows Server or Windows Azure. > >>> We are happy to announce that a lot of progress has been made in this > >>> regard. > >>> > >>> Initial work started in a feature branch, branch-1-win, based on > >>>branch-1. > >>> The details related to the work done in the branch can be seen in > >>> CHANGES.txt< > >>> > >>> > http://svn.apache.org/viewvc/hadoop/common/branches/branch-1-win/CHANGES. > >>>branch-1-win.txt?view=markup > >>> >. > >>> This work has been ported to a branch, branch-trunk-win, based on > trunk. > >>> Merge patch for this is available on > >>> HADOOP-8562<https://issues.apache.org/jira/browse/HADOOP-8562> > >>> . > >>> > >>> Highlights of the work done so far: > >>> 1. Necessary changes in Hadoop to run natively on Windows. These > changes > >>> handle differences in platforms related to path names, process/task > >>> management etc. > >>> 2. Addition of winutils tools for managing file permissions and > >>>ownership, > >>> user group mapping, hardlinks, symbolic links, chmod, disk utilization, > >>>and > >>> process/task management. > >>> 3. Added cmd scripts equivalent to existing shell scripts > >>> hadoop-daemon.sh, start and stop scripts. > >>> 4. Addition of block placement policy implemnation to support cloud > >>> enviroment, more specifically Azure. > >>> > >>> We are very close to wrapping up the work in branch-trunk-win and > >>>getting > >>> ready for a merge. Currently the merge patch is passing close to 100% > of > >>> unit tests on Linux. Soon I will call for a vote to merge this branch > >>>into > >>> trunk. > >>> > >>> Next steps: > >>> 1. Call for vote to merge branch-trunk-win to trunk, when the work > >>> completes and precommit build is clean. > >>> 2. Start a discussion on adding Jenkins precommit builds on windows and > >>> how to integrate that with the existing commit process. > >>> > >>> Let me know if you have any questions. > >>> > >>> Regards, > >>> Suresh > >>> > >>> > >> > >> > >>-- > >>http://hortonworks.com/download/ > > >
