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From Ron Wheeler <>
Subject Re: resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced
Date Thu, 01 Sep 2011 13:26:14 GMT
We started by changing the version of every module but eventually went 
to a policy of only changing the versions of modules that changed.

The project was a portal with 70+ modules so it was a PITA to change all 
the versions.
Not a big project overhead but we got tired of it and once we had moved 
much of the architecture to SOA with Web Services, it became clear that 
in a new release of the portal, most of the modules did not actually change.

We then just reversioned the changed modules, produced a new parent 
version and a new version of the core modules that dealt with the 
persistence since the database had changed.

We used a simple spreadsheet to document the versions of the modules 
that were required to build the new version of the portal.

Made our lives a lot simpler and we started to think of our own code in 
the same way that we viewed third party libraries - if we did not need 
to upgrade to fix a bug or get new functionality then we left the old 
version intact.

This obviously had a lot of benefits in testing and reduction of useless 

We did not use the parent for managing the versions of dependencies in 
the modules since we had a better scheme for managing that.


On 01/09/2011 3:59 AM, Guillaume Polet wrote:
> For me, there are two strategies there:
> 1) You use the parent pom as an aggregator (your parent pom reference 
> its children through modules) of several projects that always work 
> together and make a coherent package-->parent/children should keep the 
> same version, it's just simpler to anyone's mind and simpler to maintain.
> 2) You use a parent pom to define well-defined practices, coherent set 
> of dependencies, general properties used across all your projects, 
> plugins and their configuration that you don't want to repeat in all 
> your projects, but the parent does not know about its 
> "children"-->Then children should necessarily follow your  parent version
> Cheers,
> Guillaume
> Le 1/09/2011 06:57, Eric Kolotyluk a écrit :
>> OK, seems the problem was some data inconsistency with some things 
>> pointing to 0.0.2-SNAPSHOT and other things still pointing to 
>> 0.0.1-SNAPSHOT
>> What is the best practice for when you want to change the version of 
>> the parent POM, and have all the children follow?
>> I'm trying to use managed dependencies as much as possible, but 
>> somehow that is not enough.
>> Also, is there some simple way to remove all 0.0.1-SNAPSHOT artifacts 
>> from Nexus?
>> Cheers, Eric
>> On 2011-08-31 8:54 PM, Eric Kolotyluk wrote:
>>> Is it just me, or does anyone else ever get tired of the message
>>> resolution will not be reattempted until the update interval of 
>>> nexus has elapsed or updates are forced
>>> Everything was working fine yesterday. For some reason, that I 
>>> cannot explain, now my builds keep failing with this symptom. I have 
>>> not actually changed any pom files or really anything - other than 
>>> to stop and restart Eclipse. The same problem happens whether I 
>>> build from Eclipse or the command line. I cannot seem to find any 
>>> combination of '-U' or 'clean' or 'deploy' or anything to correct 
>>> things. I feel like a chicken who pecks randomly at things until one 
>>> of them is food.
>>> It is really unnerving that maven is so fragile and unpredictable, 
>>> and things so randomly go from working to broken. While Maven is way 
>>> better than Ant in most respects, Ant is still head and shoulders 
>>> above Maven in stability.
>>> [ERROR] Failed to execute goal on project intersystem-jni4net: Could 
>>> not resolve dependencies for project 
>>> com.kodak.intersystem:intersystem-jni4net:jar:0.0.2-SNAPSHOT: The 
>>> following artifacts could not be resolved: 
>>> com.kodak.intersystem:intersystem-common:jar:0.0.2-SNAPSHOT, 
>>> com.kodak.intersystem:intersystem-client:jar:0.0.2-SNAPSHOT, 
>>> com.kodak.intersystem:intersystem-service:jar:0.0.2-SNAPSHOT, 
>>> com.kodak.intersystem:color-repository:jar:0.0.2-SNAPSHOT: Failure 
>>> to find com.kodak.intersystem:intersystem-common:jar:0.0.2-SNAPSHOT 
>>> in http://nexus:8081/nexus/content/groups/public was cached in the 
>>> local repository, resolution will not be reattempted until the 
>>> update interval of nexus has elapsed or updates are forced -> [Help 1]
>>> When I look in my local repository I can see
>>> intersystem-common-0.0.2-SNAPSHOT.jar.lastUpdated
>>> intersystem-common-0.0.2-SNAPSHOT.pom.lastUpdated
>>> but
>>> intersystem-common-0.0.2-SNAPSHOT.jar
>>> intersystem-common-0.0.2-SNAPSHOT.pom
>>> are missing. Why is that when the previous 'deploy' succeeded?
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Ron Wheeler
Artifact Software Inc
skype: ronaldmwheeler
phone: 866-970-2435, ext 102

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