How to install Spark on Mac OS X

1. Download http://spark.apache.org/downloads.html 
2. Download http://www.scala-lang.org/download (find the version number in README inside spark archive). 
3. Extract and add on path
   export SCALA_HOME=/Users/ondrej/scala-2.10.4
   export PATH=$PATH:$SCALA_HOME/bin
4. Go to Spark root directory and run in command line: sbt/sbt clean assembly
5. Then start up Spark, also from Spark root folder: ./bin/spark-shell

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