Maven could not resolve dependencies spark - maven

Question

I try to build a simple java program: JavaWordCount for spark-1.1.0.
I get this error: Building JavaWordCount 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.279 s
[INFO] Finished at: 2014-10-23T11:28:30-04:00
[INFO] Final Memory: 9M/156M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project JavaWordCount: Could not resolve dependencies for project spark.examples:JavaWordCount:jar:1.0-SNAPSHOT: Failure to find org.apache.spark:spark-assembly_2.10:jar:1.1.0 in http://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException
Here are my dependencies from pom.xml
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-assembly_2.10</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-examples_2.10</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-core_2.10</artifactId>
<version>1.1.0</version>
</dependency>
It includes spark assembly.
Any ideas would be really appreciated.
Thank you!

Answer 1

The problem is that the dependency:
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-assembly_2.10</artifactId>
<version>1.1.0</version>
</dependency>
is not a jar its a pom file only which means you can't define it like this. You can see it in the error message:
Failure to find org.apache.spark:spark-assembly_2.10:jar:1.1.0
which shows that Maven will try to download a jar file. The means you have to define it like this:
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-assembly_2.10</artifactId>
<version>1.1.0</version>
<type>pom</type>
</dependency>
But i'm not sure if this will solve all problems. You should take a deep look into the documentation if this is the right path.
Update:
You can also use that as BOM via:
<dependency>
<groupId>org.apache.spark</groupId>
<artifactId>spark-assembly_2.10</artifactId>
<version>1.1.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>