Tag Archive for 'apache Subversion'

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Hot news coming at OSCON 2011 & a bit of politics on the Subversion Dev list

At WANdisco we have been looking forward to OSCON 2011 for quite some time. Anyone who knows our company will know that we invest heavily in open source projects, in particular Apache Subversion, which is central to many of the enterprise services that we provide. Subversion (SVN) is used by a vast array of users for source code management, from individual innovators to multinational blue chip companies. But SVN is just one of countless potentially world-changing open source applications.

So it’s always invigorating to catch up with a broad spectrum of open source luminaries to share experiences, explore new ideas, draw inspiration and share mutual aspiration. This highlight of the open source calendar is being held from July 25-29 at the Oregon Convention Center in Portland.

This year we are even more excited about OSCON because we have some big announcements of our own. We believe that these announcements in the coming days will dramatically change the landscape of how developer tools are purchased, deployed and used.

In late April we released our own freely available open ALM platform – uberSVN – which has transformed Subversion into an extensible platform, empowering software developers by enabling them to use a wider choice of toolsets, which can be combined to best fit specific business requirements.  The reviews, across the board, have been fantastic; I keep telling people that I have never been involved in such a successful launch.

Also incorporating social coding into Subversion for the first time, uberSVN has clocked up tens of thousands of installations in less than three months and rave reviews keep coming, usually highlighting the ease of installation and excellent usability that the platform provides.

Those attending OSCON 2011 have a great opportunity to win $2,500 by downloading uberSVN from a USB stick being handed out at the conference. We are pretty certain that you will be impressed with the platform whether you win the cash or not! Failing that you can grab one of our cool t-shirts or stickers.

uberSVN was a factor in WANdisco being included in the Red Herring Top 100 North America list and we have been working hard to ensure that the platform keeps up with the expectation of the massive SVN user community and, working on feedback from Subversion users we are now able to reveal some major new enhancements.

Software developers have been keen to find quicker and easier ways to deploy the tools they need and considerably reduce costs at the same time. And WANdisco has a solution…

Interested? We’ll be revealing full details very soon so keep your eyes peeled!

In addition to this major development we have a major partnership announcement looming large on the horizon too! As you would expect from WANdisco we will be hooking up with an organization regarded as the best at what they do. We pride ourselves on the quality, functionality and reliability of the services and products that we supply and we partner with companies who are held in the same regard by users of SVN. The announcement we have later in the week will also herald another significant leap forward for the capabilities of uberSVN!

We look forward to interacting with conference goers at OSCON and open source users around the world that are increasingly discovering the power that uberSVN delivers. Make sure you keep up with our upcoming announcements on this groundbreaking platform and its associated products including training, consulting services and support.

Finally, a bit of politics from the Subversion open source project.  As you may be aware we committed to improving branching & merging several months ago.  With Subversion 1.7 close to release we have been working for several weeks with Andy Singleton and his team at Assembla.  Andy has some interesting ideas that we have been exploring to “fix Subversion merge”.  Frankly the reaction of some and I mean some on the Subversion Dev list is, to put it mildly, disappointing.  If someone new appears with fresh ideas why should the first reaction be a passive-aggressive “no you can’t do that”.  It’s strange how the naysayers all derive from the same place as Harold Evans once famously said of journalism “it is simpler to sound off than it is to find out. It is more elegant to pontificate than it is to sweat.”  Well we are going to sweat!  We will not be derailed or distracted and our core Subversion guys like the idea so we are planning to build a prototype.  This is something we see as vital for Subversion users. Watch this space!

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About David Richards

David is CEO, President and co-founder of WANdisco and has quickly established WANdisco as one of the world’s most promising technology companies. Since co-founding the company in Silicon Valley in 2005, David has led WANdisco on a course for rapid international expansion, opening offices in the UK, Japan and China. David spearheaded the acquisition of Altostor, which accelerated the development of WANdisco’s first products for the Big Data market. The majority of WANdisco’s core technology is now produced out of the company’s flourishing software development base in David’s hometown of Sheffield, England and in Belfast, Northern Ireland. David has become recognised as a champion of British technology and entrepreneurship. In 2012, he led WANdisco to a hugely successful listing on London Stock Exchange (WAND:LSE), raising over £24m to drive business growth. With over 15 years' executive experience in the software industry, David sits on a number of advisory and executive boards of Silicon Valley start-up ventures. A passionate advocate of entrepreneurship, he has established many successful start-up companies in Enterprise Software and is recognised as an industry leader in Enterprise Application Integration and its standards. David is a frequent commentator on a range of business and technology issues, appearing regularly on Bloomberg and CNBC. Profiles of David have appeared in a range of leading publications including the Financial Times, The Daily Telegraph and the Daily Mail. Specialties:IPO's, Startups, Entrepreneurship, CEO, Visionary, Investor, ceo, board member, advisor, venture capital, offshore development, financing, M&A

Q&A With BCW Magazine

Here’s an interview I gave with Business Computing World (http://www.businesscomputingworld.co.uk/qa-david-richard-wandisco/)

Can you position SCM and SCCM technologies as you see them in relation to ALM in the wider sense?

WANdisco’s heritage is in distributed computing—our technology enables active-active replication over a wide area network. The first application we implemented this with was Apache Subversion to create Subversion MultiSite (a distributed, highly available and scalable Subversion implementation).

Over the past couple of years we have become a very active participant on the Apache Subversion open source project and we are keen to ensure that Apache Subversion maintains its position as what we consider to be the world’s leading SCM tool.

Recently we announced uberSVN an open ALM platform for Subversion. The uberSVN platform is a very easy to use, easy to implement and easy to extend inside a distribution of Subversion. We see SCM as a core component of ALM—it’s where the source code files are stored. So transforming Subversion into a platform that enables you to choose best-of-breed ALM components is a very natural and evolutionary step for us. We don’t believe that any single vendor can provide a complete, best-of-breed ALM solution.

Why would a firm choose Subversion over traditional SCM solutions such as Perforce, Serena or even products from HP?

I guess a better question would be “Why do firms choose or replace traditional SCM solutions with Subversion?” I guess this is because Subversion is open source and hence free, but it performs and scales in some of the most aggressive SCM environments on the planet where some of the traditional SCM products could not. Subversion now has over five millions implementations—how many do the traditional SCM’s have? Not even a fraction of that and that means Subversion must perform and scale in a huge amount of environments.

It sounds like WANdisco’s core technology could be applied across multiple applications. Are you looking at other areas?

Indeed our replication technology is generic and can be applied to other areas. Relational databases is one area we are investigating in our labs right now. Maybe next year we will be in a position to announce something more concrete around database replication/shared-nothing database clustering.

Is WANdisco actively supporting the development of Subversion?

WANdisco is a huge supporter of the Apache Subversion open source project in a number of tangible ways. We have dedicated committers on staff that we pay to only develop Subversion, we are a sponsor of the Apache software foundation and we produce Subversion binary downloads and make them freely available on our website. There was some controversy last year but that was ‘rabble-rousing’ by one of our competitors. The end result is that Subversion development on the open source project is very active again. There is a lot of energy on the project right now and that is good for the wider community.

Are there any clear trends in the SCM space?

Subversion is continuing to gain adoption in the enterprise and government organisations. That’s probably not entirely surprising given that, in product lifecycle parlance, Subversion is in maturity. As I said earlier it continues to replace traditional SCM solutions. I would also say that Microsoft’s Team Foundation Server (TFS) is also gaining traction and is probably in the number two position. We don’t see enterprises moving their source code to the cloud yet. That may change but we have see some of the tooling move there—just not the source code.

What’s the uptake been like for uberSVN?

I’d say things are looking healthy, we have thousands of installs in just over a month and the feedback has been very good. I have never seen so many product installs and that is a good sign that the product is very easy to install. We worked very hard to get a product that could be installed in less than five minutes and we will never trade that off for anything.

Are there any big announcements scheduled for uberSVN?

In July we are planning a major new product feature that will enable customers to very easily install third party applications. It’s a really cool feature that will change the way ALM software is delivered behind the firewall. We also have some partner announcements around software build and quality tools.

Is GIT a threat to Subversion?

Funny, I was talking about this only today with an industry analyst and he has the same conclusion that we have. Git has its uses but probably not in the enterprise. OK please listen, I know that statement will upset a bunch of senior developers who think that GIT solves everything but it really doesn’t.

If you think about it GIT actually promotes anti-social software development; development in small, disconnected silos is not how software is developed in the real world. Most software is developed by teams whose members have a variety of skills who need to see what each other is doing and that’s the fundamental reason why GIT is not a threat to Subversion in the enterprise. It’s fine for the development of the Linux kernel but that model doesn’t work for most companies.

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About David Richards

David is CEO, President and co-founder of WANdisco and has quickly established WANdisco as one of the world’s most promising technology companies. Since co-founding the company in Silicon Valley in 2005, David has led WANdisco on a course for rapid international expansion, opening offices in the UK, Japan and China. David spearheaded the acquisition of Altostor, which accelerated the development of WANdisco’s first products for the Big Data market. The majority of WANdisco’s core technology is now produced out of the company’s flourishing software development base in David’s hometown of Sheffield, England and in Belfast, Northern Ireland. David has become recognised as a champion of British technology and entrepreneurship. In 2012, he led WANdisco to a hugely successful listing on London Stock Exchange (WAND:LSE), raising over £24m to drive business growth. With over 15 years' executive experience in the software industry, David sits on a number of advisory and executive boards of Silicon Valley start-up ventures. A passionate advocate of entrepreneurship, he has established many successful start-up companies in Enterprise Software and is recognised as an industry leader in Enterprise Application Integration and its standards. David is a frequent commentator on a range of business and technology issues, appearing regularly on Bloomberg and CNBC. Profiles of David have appeared in a range of leading publications including the Financial Times, The Daily Telegraph and the Daily Mail. Specialties:IPO's, Startups, Entrepreneurship, CEO, Visionary, Investor, ceo, board member, advisor, venture capital, offshore development, financing, M&A

The First Subversion 1.7 Alpha Release is Available Now and The Community Needs Your Feedback

The long awaited and highly anticipated release of Subversion 1.7 is almost upon us.  Like any successful open source project, Subversion needs active participation and feedback from its user community.     This  is especially true in the case of 1.7,  given its emphasis on client-side performance and  new client tools.  That’s why Subversion 1.7.0 alpha-1 has now been made available for user testing.    Major 1.7 enhancements include:

  • HTTPv2- a protocol rewrite designed to enhance performance by reducing the number of round trips between the client and the server with every request.
  • WC-NG – a rewrite of the working copy library that enhances performance by centralizing metadata storage and provides a foundation for supporting features such as shelving and offline commits in future releases.
  • svnrdump –  a new client tool that provides the same functionality as  svnadmin dump and svnadmin load, but  on remote repositories.   There’s no need for administrator access to the source or target repository on on the remote server’s filesystem.

A complete list of what’s new is available at  http://subversion.apache.org/docs/release-notes/1.7.html.  Download 1.7 now at: http://www.wandisco.com/subversion/download/1_7-alpha.  Contribute to the success of this major new release by providing your feedback at:  http://www.svnforum.org/forums/56-Apache-Subversion-1.7.0-Alpha-Support .   This is your chance to make a positive impact on the world’s most popular version control system and its more than five million users.


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About Jim Campigli

Support for Mac OS X Added to the World’s Most Comprehensive Set of Fully Tested Free Subversion Binaries

Certified Subversion 1.6.17 binaries are now available for the Mac OS X platform.  These binaries work with Mac OS X versions 10.5.x and 10.6.x on PPC and Intel 32 and 64 bit architectures.  This software provides a complete, fully tested version of Subversion based on the most recent stable release, including the latest fixes.

To upgrade to the newest release of Subversion on Mac OS X and take advantage of the fixes and enhancements that it offers go to: http://www.wandisco.com/subversion/download .  You can register for free community support for the software at: www.svnforum.orgProfessional support is also available if you require secure, high quality online, phone and email support with guaranteed response times and automated access to the latest fixes and updates.

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About Jim Campigli

Subversion 1.6.17 Now Available

Subversion 1.6.17 was just released today.   This newest version provides several key enhancements as well as bug fixes.   Most notably, 1.6.17 includes major improvements in checkout performance for large working copies on Windows, greater efficiency of ‘blame – g’  for users dealing with a large amount of mergeinfo, and improved error handling on Windows.   A detailed list of the changes included in this new release is available at:  http://svn.apache.org/repos/asf/subversion/tags/1.6.17/CHANGES.   Release notes for the entire 1.6.x series can be found at:  http://subversion.apache.org/docs/release-notes/1.6.html.

To upgrade to this latest release of Subversion and take advantage of the fixes and enhancements that it offers go to: http://www.wandisco.com/subversion/download

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About Jim Campigli

uberSVN: The Best is Yet to Come!

Since the launch a couple of weeks ago the growth of uberSVN has been nothing short of spectacular.  We’ve had thousands of downloads and successful installs.  Probably the only thing to raise our eyebrows a little is the amount of support tickets or to be more precise the lack of them!  I must admit (touch wood) that this is / was by far the best new product launch that I have ever been part of! The feedback (and unsolicited too) has been terrific.  Another well done to the uberSVN team!

It is very important that we don’t rest on our laurels and push forward with new features (such as LDAP integration) and enhancements (which is the posh way of saying bug fixes) and acting on user-feedback.  To that end, we met last week in Napa to sanity check the feature pipeline of uberSVN and our other products.  I think it’s safe to say that the best is yet to come!

We have some pretty big plans for the product.  Indeed the goal from the start was for uberSVN to be a living, expanding product guided by a large community of users.  One of the fundamental early features of uberSVN is the easy to use auto-update mechanism that allows us to offer these new features and functions to users very quickly.

Next week we’ve got a minor release coming out. Here’s what is planned:

  • LDAP Authentication – this has been requested by many users
  • Bug fixes including native language support, loading repos from large dump files.

The next major release will be in late June / early July and we will be announcing some pretty big news at OSCON.  Here’s a sneak-peak:

  • Integration with Subversion MultiSite
  • Scheduling back-up / import
  • Bundling some cool third party tools, pre-integrated with uberSVN.
  • Tool for adding / extending uberSVN.
  • A fully documented API for third party integration.
  • ???? You’ll just have to wait but we have a pretty big surprise up our sleeves!

Partnerships will have a big part to play in the uberSVN ecosystem. We have been working with several leading tools vendors for several months to include them in this new ecosystem and it’s something we are pretty excited about.  We will be opening this up to other vendors after July so if you’re interested in joining the uberSVN ecosystem, drop me a line.

I should also probably address some of the spam comments from our competition friends.  This is not an open source product. Why? Simple, it doesn’t need to be!  We are part of the Apache Subversion project and we believe that Subversion, as a stand-alone product, should continue to be the best SCM product on the planet.  We are going to ensure that uberSVN always uses the latest Subversion Binaries in an unmodified form (our uberSVN users will be able to automatically install the new release of Subversion, 1.6.17, due out next week). In fact we will always offer the open source subversion binaries on our website.  It’s important to us that we always offer users a choice.

It’s a Beta product.  Gmail was in Beta for 5 years. I was one of the early users and used it for banking, my kids’ school stuff and a whole bunch of things that I couldn’t really do without.  It didn’t mean that it didn’t work.  In fact Google only removed the Beta tag when they believed that “the beta tag just doesn’t fit for large enterprises that aren’t keen to run their business on software that sounds like it’s still in the trial phase.”  In this case we are looking to reach a ‘complete’ set of features – as I said earlier this product is going to get much bigger – in the words of old blue eyes “the best is yet to come!

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About David Richards

David is CEO, President and co-founder of WANdisco and has quickly established WANdisco as one of the world’s most promising technology companies. Since co-founding the company in Silicon Valley in 2005, David has led WANdisco on a course for rapid international expansion, opening offices in the UK, Japan and China. David spearheaded the acquisition of Altostor, which accelerated the development of WANdisco’s first products for the Big Data market. The majority of WANdisco’s core technology is now produced out of the company’s flourishing software development base in David’s hometown of Sheffield, England and in Belfast, Northern Ireland. David has become recognised as a champion of British technology and entrepreneurship. In 2012, he led WANdisco to a hugely successful listing on London Stock Exchange (WAND:LSE), raising over £24m to drive business growth. With over 15 years' executive experience in the software industry, David sits on a number of advisory and executive boards of Silicon Valley start-up ventures. A passionate advocate of entrepreneurship, he has established many successful start-up companies in Enterprise Software and is recognised as an industry leader in Enterprise Application Integration and its standards. David is a frequent commentator on a range of business and technology issues, appearing regularly on Bloomberg and CNBC. Profiles of David have appeared in a range of leading publications including the Financial Times, The Daily Telegraph and the Daily Mail. Specialties:IPO's, Startups, Entrepreneurship, CEO, Visionary, Investor, ceo, board member, advisor, venture capital, offshore development, financing, M&A

SVNref Cards – Free Cheat Sheets for Subversion Developers and Administrators

In conjunction with our free Subversion training webinars we’re building a library of free cheat sheets for developers and administrators that we call SVNref Cards. Based on the highlights from each webinar, SVNref Cards are written by active members of the Apache Subversion project. Their easy to use format focuses on the most important concepts from each session and illustrates them with practical examples.

We introduced SVNref Cards after one of our most popular sessions, Hidden Subversion, which had over a thousand attendees. Since then, we’ve followed up with one for each webinar. Anyone who registers for a free Subversion training webinar receives an SVNref Card for that session automatically. If you miss a session you can download them anytime and stay up-to-date with the latest tips and tricks.

Our rapidly expanding library includes:

Hidden Subversion – An inventory of powerful, but relatively unknown and seldom used Subversion features.

Subversion Administration Best Practices – A quick reference guide covering administration policies and procedures, repository organization, backup and recovery and hook script usage.

Introduction to Branching and Merging – A review of branching and merging basics and merge conflict resolution.

Advanced Branching and Merging – Picks up where the introduction leaves off with examples of merge types, use of mergeinfo, analysis of branches using revision graphs and enforcement of standards.

WANdisco provides SVNref Cards and the free training webinars they’re based on to promote Subversion’s use and adoption, benefiting the entire community. We’re even planning to make recordings of our free training webinars available in response to the thousands of requests we’ve had since we began offering them nearly a year ago. Of course, if more extensive Subversion training, support, or other services are required, WANdisco has those too.

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About Jim Campigli

Our Initial Thoughts

Where did February go?  As a resident of Massachusetts, parts of me (namely my back, shoulders and arms) are quite happy to see those weeks get crossed off the calendar.  Since my last posting here, I’ve not only been shoveling snow though.   Two separate Subversion Live events were held,first in San Jose and then two weeks later in London.

Both days were extremely fruitful for those of us from WANdisco that attended and I hope our attendees felt the same way.   The presentations in the various tracks were well attended, very professional and well received. A great source of information exchange was the roundtable sessions at the conclusion of each day. But what I always find most useful at events like this are the less formal conversations that occur prior to a session, or during a break, or over lunch.  Not surprisingly, inquiries about what our committers were looking to do with regard to enhancing Subversion merge support was the most frequent topic raised and the subsequent discussions and feedback we received was extremely valuable.

So with that information in hand, here’s what is being initially targeted:

  • Better handling of renames across merges
  • partially automated merges
  • Faster merges – improving performance of merge operations
  • Enhancements to importing to handle 3rd Party / Vendor source code

This is really just an initial list. The team is actually still quite busy at the moment working on the final aspects of Subversion 1.7.  But we are also still in active discussions about other use cases that have been raised and additional ideas may still be formulated and as those become more concrete, I’ll be quite happy to write about them here.

By the way, if you are still interested in attending Subversion Live, February’s weather pattern here in the Northeastern U.S. has accommodated you! Our Boston event scheduled for early February has been rescheduled for Tuesday, March 22. The same great agenda awaits but thankfully, the snow may not. I hope to see many of you in Boston and I’d welcome the chance to listen and learn from your experience.

– Rob

P.S.  I really did have to shovel a lot, including my roof!

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About rbudas

Rob Budas has over 25 years of software industry experience, with the last 15 years focused on the Software Configuration Management sector. Prior to joining WANdisco, Rob had worked at IBM Rational for 8 years where he was a Sr. Product Manager for Rational ClearCase. He has held various development, technical sales and product management roles throughout his career. Rob holds a Bachelor of Science in Computer and Communication Science from the University of Michigan.

We are now a sponsor of Apache!

Apache Subversion WANdiscoI am pleased to announce that today we have become an Apache Software Foundation (ASF) sponsor.

I firmly believe that actions speak louder than words. This clearly demonstrates our commitment to open source and also our belief that the ASF is the right place for Subversion.  Any claims that we are at odds with the ASF should now be put to rest.

The ASF is a non-profit, volunteer-run foundation and this will help aid organizational, legal and financial support for a broad range of Apache licensed projects including Subversion. Other Apache Software Foundation sponsors include Google, Yahoo!, and Facebook, we are proud to join them. We are extremely grateful to the ASF.  This is a ‘safe home’ – Apache have led the way in community open source development since 1999 and they are no stranger to mature, pervasive open source technology like Subversion.

This announcement coincides with the inaugural Subversion Live Conferences.  Apache Subversion has certainly come a long way since its inception in 2000. With over 5 million users it is recognized as the leader in Standalone Software Configuration Management. Indeed, a recent Eclipse Foundation survey found that over 58% of Eclipse users use Subversion, making it the dominant source code management product by a huge margin.

Subversion is no longer a young upstart and we believe it has become critical to talk to Subversion users.  We must uncover the needs of enterprises both large and small.  Subversion may be mature but that does not mean that innovation stops.  The last 11 years (has it really been that long?) have been amazing.  To become the dominant technology in this space is the software equivalent of scaling Mount Everest.

Together, as a community we can do a lot more. May Subversion continue to lead the way for another 11 years and beyond!

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About David Richards

David is CEO, President and co-founder of WANdisco and has quickly established WANdisco as one of the world’s most promising technology companies. Since co-founding the company in Silicon Valley in 2005, David has led WANdisco on a course for rapid international expansion, opening offices in the UK, Japan and China. David spearheaded the acquisition of Altostor, which accelerated the development of WANdisco’s first products for the Big Data market. The majority of WANdisco’s core technology is now produced out of the company’s flourishing software development base in David’s hometown of Sheffield, England and in Belfast, Northern Ireland. David has become recognised as a champion of British technology and entrepreneurship. In 2012, he led WANdisco to a hugely successful listing on London Stock Exchange (WAND:LSE), raising over £24m to drive business growth. With over 15 years' executive experience in the software industry, David sits on a number of advisory and executive boards of Silicon Valley start-up ventures. A passionate advocate of entrepreneurship, he has established many successful start-up companies in Enterprise Software and is recognised as an industry leader in Enterprise Application Integration and its standards. David is a frequent commentator on a range of business and technology issues, appearing regularly on Bloomberg and CNBC. Profiles of David have appeared in a range of leading publications including the Financial Times, The Daily Telegraph and the Daily Mail. Specialties:IPO's, Startups, Entrepreneurship, CEO, Visionary, Investor, ceo, board member, advisor, venture capital, offshore development, financing, M&A

A Wealth of Information

As I stated in my last entry, there are many rich sources of feedback captured from the Subversion community.  The most obvious source of data is the Subversion project’s issue tracker, which contains a lot of the issues that will drive future updates to Subversion.  But there is a wealth of other data to look at to find what may be hindering users of Subversion.   The Subversion mailing lists and community sites can be particularly helpful in spotting recent trends, frustrations or simply common questions that continue to arise.

But one immediate source to focus our attention on is a couple of feedback sessions that were held about a year ago and hosted by Hyrum Wright and C. Michael Pilato.  The most interesting comment came from Mike’s session:

* Improved branching and merging: Everybody loves merge tracking
  and tree conflicts.  That is, when they don't hate it.
  Subversion should be smarter, and *must* learn to gracefully deal
  with renames.

Needless to say, we are already targeting better ways to handle merges across renames but it never hurts to see that reiterated in the summary of a feedback session such as this.

With respect to merge tracking in general, there are already a well known set of requirements that were captured by the project prior to the improvements delivered in Subversion 1.5.  These are a good reference point to start from but they do reflect the state of the project essentially at 1.4 and we want to update the use cases and capture relevant new use cases.  And while merging is a primary target for continued improvement, it is not the sole focus of this scoping exercise.  By no means are we limiting our attention to just this one topic.

We will continue to review both customer feedback and also the more specific issues captured in the issue tracker as we compile a prioritized list of targeted improvements. Beyond all of this data, I’m working with developers that have been involved in the project for years and their experience and instincts may prove to be as valuable source of ideas as any.

More to come…

– Rob

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About rbudas

Rob Budas has over 25 years of software industry experience, with the last 15 years focused on the Software Configuration Management sector. Prior to joining WANdisco, Rob had worked at IBM Rational for 8 years where he was a Sr. Product Manager for Rational ClearCase. He has held various development, technical sales and product management roles throughout his career. Rob holds a Bachelor of Science in Computer and Communication Science from the University of Michigan.