>  It could be that "package" is the minimum phase required in a multi-module 
> build,

Actually that should at least be "verify" phase, as this includes our new 
integration tests:

http://maven.apache.org/surefire/maven-failsafe-plugin/

Andrus



> On Nov 9, 2014, at 3:10 PM, Andrus Adamchik <and...@objectstyle.org> wrote:
> 
> We need "clean". It removes "target" dirs within the modules.
> 
>> In jenkins we should not need to clean
> 
> We absolutely need "clean". It removes "target" dirs in each module, and 
> hence this is the only way to remove the previous build.
> 
>> because the repository is always reset for each build.
> 
> When you start with an empty local repo, Maven downloads all dependencies 
> from a remote repo. I've never seen it actually happen, except for 
> dependencies introduced by a given commit. So my assumption that the local 
> repo is reused (and it is actually not affected by "clean" anyways).
> 
>> Do we need to install so that artifacts built early on are used by other 
>> modules built later?
> 
> In a multi-module project there's a concept of "reactor" that would resolve 
> modules built in the same run without going to the repo. So unlike "clean", 
> "install" may actually be superfluous. It could be that "package" is the 
> minimum phase required in a multi-module build, and my preference for 
> "install" is traced back to the old days of Maven being half-broken :)
> 
> Andrus
> 
> 
> 
>> On Nov 9, 2014, at 12:44 PM, Aristedes Maniatis <a...@maniatis.org> wrote:
>> 
>> On 8/11/2014 11:04pm, Andrus Adamchik wrote:
>>> I noticed our build config was using "mvn -e test". This is not enough to 
>>> guarantee a stable build across various types of changes, and is a reason 
>>> *all* builds were failing lately, not just some and occsaionally. E.g. the 
>>> example below runs tests that are no longer in Git!
>> 
>> That was probably me who put the "mvn test" in there. I've left maven far 
>> behind for all my other work (gradle makes a million times more sense to 
>> me), so I'm curiousas to the difference. In jenkins we should not need to 
>> clean because the repository is always reset for each build. But I'm 
>> guessing that 'install' is very different to 'test'. Do we need to install 
>> so that artifacts built early on are used by other modules built later?
>> 
>> -- 
>> -------------------------->
>> Aristedes Maniatis
>> GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
>> 
> 
> 

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