Process data with a custom JAR
A custom JAR runs a compiled Java program that you can upload to Amazon S3. You should compile
the program against the version of Hadoop you want to launch, and submit a
CUSTOM_JAR step to your Amazon EMR cluster. For more information about how to
compile a JAR file, see Build binaries using Amazon EMR.
For more information about building a Hadoop MapReduce application, see the MapReduce Tutorial
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