Re: [git] configuring Hudson build job for multiple Git repositories

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

Well I guess that depends on your definition
of "cumbersome" :)  If someone wants to contribute a fix
they generally need to clone the entire repository to their local desktop.
So what's a reasonable amount of data we can expect someone to transfer
to their desktop to work on the project? For example the current Eclipse
Platform repositories range from 20MB to 200MB in total size. Now these
have 10+ years of history in them so that's probably larger than typical
for their LOC. I think these sizes are ok, but if you had repositories
of 500+ MB I think it would become more painful to use.

On the flip side, having code changes
that span multiple repositories is a pain to work with. You lose the ability
to capture the entire set of changes in a single URL, the ability to easily
cherry-pick/transfer to other branches, etc. After a couple of years of
heavy Git use I'm definitely in the "less repositories is better"
camp. 

John

Matthew Heitz <mheitz@xxxxxxxxxx>
Sent by: git-bounces@xxxxxxxxxxx

07/30/2012 01:40 PM

Please respond to
"Git related discussions,        specifcally migration help for projects at Eclipse.org"        <git@xxxxxxxxxxx>

To	"Git related discussions,        specifcally migration help for projects at Eclipse.org" <git@xxxxxxxxxxx>
cc
Subject	Re: [git] configuring Hudson build job for multiple Git repositories

John, 

The new version of the wiki page says very large repositories may be cumbersome
to work with.  What's your definition of "very large"?

 -Matt

--------------
Matt Heitz
Developer, Eclipse EGL Development Tools and IBM Rational Business Developer
http://www.eclipse.org/edt/
http://www.ibm.com/developerworks/rational/products/rbde/






From:        John
Arthorne <John_Arthorne@xxxxxxxxxx> 
To:        "Git
related discussions,        specifcally migration help
for projects at Eclipse.org" <git@xxxxxxxxxxx>, 
Date:        07/30/2012
12:57 PM 
Subject:        Re:
[git] configuring Hudson build job for multiple Git repositories
Sent by:        git-bounces@xxxxxxxxxxx

---

This is off your topic, but I think the suggestion on that wiki page of
having one Git repository per plugin is far too fine-grained. There are
trade-offs either way and I suspect opinions differ. I have added more
information to the wiki page on what those trade-offs are, to help people
make more informed decisions. 

John

Matthew Heitz <mheitz@xxxxxxxxxx>
Sent by: git-bounces@xxxxxxxxxxx

07/30/2012 10:49 AM

Please respond to
"Git related discussions,        specifcally migration help for projects at Eclipse.org"        <git@xxxxxxxxxxx>

To	git@xxxxxxxxxxx
cc
Subject	[git] configuring Hudson build job for multiple Git repositories

Hi, 

I need some help configuring Hudson to build my project after its migration
from CVS to Git. 

We migrated from one CVS repository to several Git repositories, thanks
to statements like "Typically, one Git repository (.git) is created
for each logical unit, or grouping of code -- a plugin, a connector, a
component, and so on." in http://wiki.eclipse.org/Git/Migrating_to_Git
.  I want the code from all of the Git repos to be compiled together
by one Hudson job, but I haven't succeeded yet. 

Hudson's build config page allows you to specify as many Git repos as you'd
like, but I just read in the Hudson Book http://wiki.eclipse.org/The_Hudson_Book
that "Providing multiple repositories only makes sense when they are
clones or instances off the same repository, since they will be used for
merging together the content prior to the build."  That's not
what I'm trying to do.  Each repository contains a distinct set of
plugins. 

In order for my build to work, the files from all repos must be extracted
to the same directory in the Hudson workspace.  But Hudson is removing
the previous contents of the directory each time it fetches files from
a repo.  I end up with only the files from the last repo.

I tried telling Hudson to put each repo's files into a different place,
but then javac couldn't find them. 

I appreciate any help you can give me. 

-Matt

--------------
Matt Heitz
Developer, Eclipse EGL Development Tools and IBM Rational Business Developer
http://www.eclipse.org/edt/
http://www.ibm.com/developerworks/rational/products/rbde/

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