Using scala-eclipse for spark - eclipse

Question

Could some please help me on how to use the scala-eclipse IDE for spark ?
I came across this link - http://syndeticlogic.net/?p=311. But I am unable to follow it.
I entered the command - mvn -Phadoop2 eclipse:clean eclipse:eclipse inside the spark directory after a long list of downloads it gave me some error. Please help. Thanks
Below is the error i received
Reactor Summary:
[INFO]
[INFO] Spark Project Parent POM .......................... SUCCESS [5:22.386s]
[INFO] Spark Project Core ................................ SUCCESS [17:20.807s]
[INFO] Spark Project Bagel ............................... FAILURE [2.159s]
[INFO] Spark Project GraphX .............................. SKIPPED
[INFO] Spark Project ML Library .......................... SKIPPED
[INFO] Spark Project Streaming ........................... SKIPPED
[INFO] Spark Project Tools ............................... SKIPPED
[INFO] Spark Project Catalyst ............................ SKIPPED
[INFO] Spark Project SQL ................................. SKIPPED
[INFO] Spark Project Hive ................................ SKIPPED
[INFO] Spark Project REPL ................................ SKIPPED
[INFO] Spark Project Assembly ............................ SKIPPED
[INFO] Spark Project External Twitter .................... SKIPPED
[INFO] Spark Project External Kafka ...................... SKIPPED
[INFO] Spark Project External Flume ...................... SKIPPED
[INFO] Spark Project External ZeroMQ ..................... SKIPPED
[INFO] Spark Project External MQTT ....................... SKIPPED
[INFO] Spark Project Examples ............................ SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 25:15.115s
[INFO] Finished at: Wed May 07 15:27:51 GMT+05:30 2014
[INFO] Final Memory: 22M/81M
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "hadoop2" could not be activated because it does not exist.
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-remote-resources-plugin:1.5:process (default) on project spark-bagel_2.10: Failed to resolve dependencies for one or more projects in the reactor. Reason: Missing:
[ERROR] ----------
[ERROR] 1) org.apache.spark:spark-core_2.10:jar:1.0.0-SNAPSHOT
[ERROR]
[ERROR] Try downloading the file manually from the project website.
[ERROR]
[ERROR] Then, install it using the command:
[ERROR] mvn install:install-file -DgroupId=org.apache.spark -DartifactId=spark-core_2.10 -Dversion=1.0.0-SNAPSHOT -Dpackaging=jar -Dfile=/path/to/file
[ERROR]
[ERROR] Alternatively, if you host your own repository you can deploy the file there:
[ERROR] mvn deploy:deploy-file -DgroupId=org.apache.spark -DartifactId=spark-core_2.10 -Dversion=1.0.0-SNAPSHOT -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]
[ERROR]
[ERROR] Path to dependency:
[ERROR] 1) org.apache.spark:spark-bagel_2.10:jar:1.0.0-SNAPSHOT
[ERROR] 2) org.apache.spark:spark-core_2.10:jar:1.0.0-SNAPSHOT
[ERROR]
[ERROR] ----------
[ERROR] 1 required artifact is missing.
[ERROR]
[ERROR] for artifact:
[ERROR] org.apache.spark:spark-bagel_2.10:jar:1.0.0-SNAPSHOT
[ERROR]
[ERROR] from the specified remote repositories:
[ERROR] maven-repo (http://repo.maven.apache.org/maven2, releases=true, snapshots=false),
[ERROR] apache-repo (https://repository.apache.org/content/repositories/releases, releases=true, snapshots=false),
[ERROR] jboss-repo (https://repository.jboss.org/nexus/content/repositories/releases, releases=true, snapshots=false),
[ERROR] mqtt-repo (https://repo.eclipse.org/content/repositories/paho-releases, releases=true, snapshots=false),
[ERROR] cloudera-repo (https://repository.cloudera.com/artifactory/cloudera-repos, releases=true, snapshots=false),
[ERROR] apache.snapshots (http://repository.apache.org/snapshots, releases=false, snapshots=true),
[ERROR] central (http://repo.maven.apache.org/maven2, releases=true, snapshots=false)
[ERROR] -> [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/MojoExecutionException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :spark-bagel_2.10

Answer 1

This is because there is no profile called hadoop2 in the pom.xml. The closest matches are hadoop-2.2,hadoop-2.3 etc.
You can run the following
mvn -Phadoop-2.2 eclipse:clean eclipse:eclipse
or you may run 'mvn help:all-profiles' to list all the profiles and use one from it

Answer 2

If you want to contribute to the Apache Spark project, then
Go to spark home and run sbt/sbt eclipse
In Scala IDE, Select File | Import | Existing Projects into Workspace.
Select root directory :MY_SPARK_HOME
Select Search for Nested Projects
Select the projects that you want
Do not select "Copy projects into workspace".
If you want to use the spark libraries in an application that you are using then,
- You can create a jar using the sbt/sbt assembly command and then add that jar as a library to your application project
Also refer to the eclipse documentation here at: https://cwiki.apache.org/confluence/display/SPARK/Contributing+to+Spark#ContributingtoSpark-Eclipse