jaikiran pai [http://community.jboss.org/people/jaikiran] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629064#629064 -------------------------------------------------------------- This might help a bit http://blog.emmanuelbernard.com/2010/05/git-how-my-life-has-improved-sinc... http://blog.emmanuelbernard.com/2010/05/git-how-my-life-has-improved-sinc... -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629064#629064] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Andrew Dinn [http://community.jboss.org/people/adinn] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629234#629234 -------------------------------------------------------------- I successfully moved the Byteman repo from SVN to git using svn2git, preserving +all+ history. There were two slightly tricky bits: * getting the authors names right -- you need to remap all the names which have been used during checkin otherwise the convert fails. so you might end up redoing the convert a few times beforeyou get them all. this is annoing as the conversion takes quite a long time. * pruning branches/tags which had been deleted and then recreated in SVN -- overwritten branches/tags appear with names like 4.1.3.Final@33957. all you need to do is delete these branches/tags after conversion andbefore uploading the lcoal converted repo into github I think it is well worth doing though. git makes collaboration much much easier both inside and outside the JBoss(TS) team. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629234#629234] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Andrew Dinn [http://community.jboss.org/people/adinn] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629288#629288 -------------------------------------------------------------- Not really, you just set it running and leave it for a few hours to see if you have identified all named committers. Once you know all the name mappings are valid you can freeze the TS repo, run the convert for real, upload to git and unfreeze relative to the git master. It might take up to half a day to do the switcheroo but you should not have to freeze for more than that. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629288#629288] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629323#629323 -------------------------------------------------------------- I'd like to understand the pros and cons. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629323#629323] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629558#629558 -------------------------------------------------------------- Not convinced it's a problem for TS. It may look it for this one specific case, but I doubt it will be that useful in the long term. We discussed this several times within the team and didn't see a reason to move. I haven't seen or heard anything different recently. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629558#629558] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630028#630028 -------------------------------------------------------------- Understood, but like I said "not convinced". This is based on the amount of (or lack thereof) conflicts we've had over the years with concurrent activities. TS isn't as much in flux as other projects that we have, where I do see a good role for git. There are many other things that the team should be concentrating on with higher priority. Now I could very well be wrong. But just looking at the svn trail over the past few months still reflects that svn is sufficient for us. And let's not forget that any "move to git" isn't really a move since we continue to use svn. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630028#630028] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630057#630057 -------------------------------------------------------------- None of our projects should be moving completely off svn. If that is the case then we have a problem. Stop. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630057#630057] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630231#630231 -------------------------------------------------------------- I'm somewhat boggled by your response, but then maybe we're coming at this from different angles. Let me try to make it clearer: when I agreed to support moves to git it was on the understanding that all project moves would be done with the clear understanding that productisation branches would still be maintained in svn. I know that that is happening for some projects. I'm hoping that it's happening for all projects. That link back to svn is the one that cannot be broken. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630231#630231] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/631115#631115 -------------------------------------------------------------- Our productisation teams have well defined processes by which they obtain sources and commit patches back upstream. Red Hat prides itself on providing excellent (long term) support to our customers for the open source products we provide. As such, anything we do in the community needs to tie into that. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/631115#631115] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Tom Jenkinson [http://community.jboss.org/people/tomjenkinson] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/629863#629863 -------------------------------------------------------------- Coindentally, I have just had two separate discussions with co-workers at the very same time regarding the performance of svn.jboss.org. Does anyone know if it is "faster" (not just from a protocol point of view) to interact with github for a similarly sized project compared to one hosted on svn.jboss.org? -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/629863#629863] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Jason Greene [http://community.jboss.org/people/jason.greene] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630110#630110 -------------------------------------------------------------- This is just my opinion, but the strongest and most convincing reason to move JBoss Transactions to GIT would be a stricter quality / review process. This is because GIT lets you do the following: 1. Prevent changes from being merged until they are widely reviewed by everyone and finally approved by the maintainer(s). This is usually one person but can have some redundancy if need be1. All changes have multiple "eyes" on them 2. Testing is ran by multiple parties 3. Everything implicitly gets an architectural and design review 2. Isolate and test individual features separate from the main tree. This means that regressions can be tested and caught before they are ever in the public master branch. Note that unlike SVN these branches are relatively easy to sync and can be long running, In addition it's easier to track down the source of a problem in the event that the above processes fail. Git has a command called "bisect" that automates an O (log N) search through your commit history for the regression. So the process for finding the failure becomes 1. Write a test case that shows the failure 2. Start a bisect from the last known good commit 3. Execute the test, and upon success call "git bisect good", failure call "git bisect bad". This can be easily scripted 4. Have a cold beer Some other powerful benefits are: 1. Do work on an airplane (no server required) [also useful when JBoss.ORG goes down] 2. Quickly switch branches, make changes, create new branches etc (much better productivity) 3. Cryptographically secure history. Every change is a SHA1 of the change + commit + past change. Therefore, it is near impossible to hack the code/history of a git repo. To do it you have to change the SHA1s, and once you do that all other copies in the world will show yours is a fake. 4. Extra redundancy (everyone has a copy), and easier migration (quick/easy to copy) The drawbacks to moving to GIT are 1. Maintaining a GIT repo requires a lot of GIT knowlege (the person(s) in charge of approving / pushing changes). This can lead to folks transitioning that are unfamiliar with it having a hard time. Before moving any project of this nature to GIT, you should get to know it, and read some of the material and ask for help from others. 2. Contributers that are used to svn or cvs will have to learn something very different. Much less knowledge is needed than 1) but it's still enough that it will require ramp-up to those unfamiliar with it 3. If it aint broke..... -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630110#630110] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630244#630244 -------------------------------------------------------------- Seen that already and we're arranging for online training sessions too. Don't get me wrong: I like git and understand pros and cons (roughly). But as always for the next 6 months (!) my concern is timing and whether this is really the right thing to do for the 4.x series now. I don't see this any different to when we moved TS from cvs to svn: we left older versions in cvs that we touched rarely and new development continued in svn. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630244#630244] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Mark Little [http://community.jboss.org/people/marklittle] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630254#630254 -------------------------------------------------------------- OK, that's interesting. As a slight aside, Mic Neale and I were talking about svn on git yesterday ;) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630254#630254] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Jason Greene [http://community.jboss.org/people/jason.greene] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/630245#630245 -------------------------------------------------------------- Yeah there realistically will be an impact for doing the conversion. It does only take a day to convert and move the code but then you also need to: 1. Decide on a workflow/process to use with Git. 2. Decide who the maintainer(s) will be 3. Talk to JBoss.ORG on getting fisheye set up to point to it 4. Consider using the Git workflow in JIRA 5. Get everyone up to speed on using Git 6. Update all websites and artifacts to point to the new repo 7. Give the product team a heads up that the switch occured What you describe for TS5 is what we did for AS 7. We left the old pre-7 codebase in subversion since moving it to git wasn't by any means an urgent matter. Although in our case the implementation was very different so the history wasn't as important. I would recommend having an answer to all of the open questions above before actually planning and doing the conversion. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/630245#630245] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]

Tom Jenkinson [http://community.jboss.org/people/tomjenkinson] created the discussion "Re: Moving to git from svn?" To view the discussion, visit: http://community.jboss.org/message/645019#645019 -------------------------------------------------------------- Just to say that this has happened. We kind of took the easy route and did a top skim of svn trunk and used this to seed our new repo. All existing branches for the 4.x and below will be maintained in svn. Narayana (i.e. trunk) will be maintained in git. trunk svn is now locked read only in deference to: https://github.com/jbosstm/narayana https://github.com/jbosstm/narayana, but the existing branches are working as they were, although of course it is possible to access the branches using git-svn if you prefer. The website has been update with information on git: http://www.jboss.org/jbosstm/sourcecode http://www.jboss.org/jbosstm/sourcecode - although to be fair, the most significant pointers to working with git are provided in the (linked on page) excellent "hacking on as7" article. Note, I also created a separate repo for our quickstart/: https://github.com/jbosstm/quickstart https://github.com/jbosstm/quickstart. Again, this is as per AS7s approach. Thanks to all for your feedback and suggestions on this! I will now raise this in the user forum where any issues with user documentation etc would probably be best placed. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/645019#645019] Start a new discussion in JBoss Transactions Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]