Hmm, I'm getting this now, too, when I try against trunk, but not from our
source build, but instead when I try to add Mahout as a dependency for a new
project. It seems if I wipe out the guava directory, it will then go and get
r08 and r09. Not sure what has the dependency on r08, as when I do mvn
dependency:tree, it doesn't show up. I've also tried blowing away my
~/.m2/repository to no avail.
In summary, when just simply installing trunk (mvn install) no problems. If I
then have a dependency on mahout 0.6-SNAPSHOT in a new project, I get a
problem.
I think the problem is due to Watchmaker having a dep on Google collections,
which guava superseded. I added:
<dependency>
<groupId>org.apache.mahout</groupId>
<artifactId>mahout-core</artifactId>
<version>0.6-SNAPSHOT</version>
<exclusions>
<exclusion>
<groupId>com.google.collections</groupId>
<artifactId>google-collections</artifactId>
</exclusion>
</exclusions>
</dependency>
Yet another reason to axe Watchmaker.
-Grant
On Oct 14, 2011, at 8:25 AM, Sean Owen wrote:
> It sounds like there's a Guava version conflict. I think we use the
> fairly recent r09. That update happened... maybe 5-6 months ago? Not
> recent, but there was an update at some point.
>
> On Fri, Oct 14, 2011 at 4:13 PM, Steven Bourke <sbou...@gmail.com> wrote:
>> Hi Guys,
>>
>> I just downloaded the latest SVN and updated my java project to point
>> towards the newly compiled JAR's. I'm getting the following error when I run
>> my code, can anyone point me in the right direction as to what may have
>> changed? I've included the various dependencies etc. as per usual.
>>
>> Exception in thread "main" java.lang.NoSuchMethodError:
>> com.google.common.base.Platform.precomputeCharMatcher(Lcom/google/common/base/CharMatcher;)Lcom/google/common/base/CharMatcher;
>> at com.google.common.base.CharMatcher.precomputed(CharMatcher.java:662)
>> at com.google.common.base.CharMatcher.<clinit>(CharMatcher.java:69)
>> at com.google.common.base.Splitter.on(Splitter.java:121)
>> at
>> org.apache.mahout.cf.taste.impl.model.file.FileDataModel.<init>(FileDataModel.java:181)
>> at
>> org.apache.mahout.cf.taste.impl.model.file.FileDataModel.<init>(FileDataModel.java:148)
>> at
>> com.bourke.facebook.process.Clustering.BuildData.splitBeforeAndAfter(BuildData.java:98)
>> at com.bourke.facebook.process.Clustering.BuildData.main(BuildData.java:133)
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>> at java.lang.reflect.Method.invoke(Method.java:597)
>>
