在OS X Eclipse上使用Maven安装Mahout

Question

I am trying to play with Mahout.

Following very simple instructions on the apache website. I'm getting weird dependency errors.

I've created a new project with Maven. I've added this to the pom.xml as suggested:

<dependency>
  <groupId>org.apache.mahout</groupId>
  <artifactId>mahout-mrlegacy</artifactId>
  <version>0.9</version>
</dependency>

now running 'mvn clean install -U' gives me:

Downloading: https://repo.maven.apache.org/maven2/org/apache/mahout/mahout-mrlegacy/0.9/mahout-mrlegacy-0.9.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.689 s
[INFO] Finished at: 2015-03-21T10:54:37+00:00
[INFO] Final Memory: 6M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project my-app: Could not resolve dependencies for project com.mycompany.app:my-app:jar:1.0-SNAPSHOT: Could not find artifact org.apache.mahout:mahout-mrlegacy:jar:0.9 in central (https://repo.maven.apache.org/maven2) -> [Help 1]

Java is too hard! Seriously, I'm a Ruby guy. Now I also tried 'artifactID' as just 'mahout' as I can see that in some of these alleged maven repositories, but same error. What am I doing wrong???

Answer 1

The documentation of Apache Mahout appears to have a version mix-up. mahout-mrlegacy does not exist in version 0.9, but it will exist in version 0.10.0 . For version 0.9, the dependency is actually mahout-core .

Therefore, you should use

<dependency>
    <groupId>org.apache.mahout</groupId>
    <artifactId>mahout-core</artifactId>
    <version>0.9</version>
</dependency>

When 0.10.0 will be released, you will need to use

<dependency>
    <groupId>org.apache.mahout</groupId>
    <artifactId>mahout-mrlegacy</artifactId>
    <version>0.10.0</version>
</dependency>

Answer 2

Add below dependency to your pom.xml

<dependency>
    <groupId>org.apache.mahout</groupId>
    <artifactId>mahout-mrlegacy</artifactId>
    <version>0.9.0.2.2.0.0-2041</version>
</dependency>

and below repositories

<repositories>
    <repository>
        <id>pentaho-releases</id>
        <url>http://repository.pentaho.org/artifactory/repo/</url>
    </repository>
</repositories>

Hope this could help you.

For more details:

https://maven-repository.com/artifact/org.apache.mahout/mahout-mrlegacy/0.9.0.2.2.0.0-2041