The source code of all examples is available at https://github.com/learninghadoop2/book-examples.
Gradle (http://www.gradle.org/) scripts and configurations are provided to compile most of the Java code. The
gradlew script included with the example will bootstrap Gradle and use it to fetch dependencies and compile code.
JAR files can be created by invoking the
jar task via a
gradlew script, as follows:
Jobs are usually executed by submitting a JAR file using the
hadoop jar command, as follows:
$ hadoop jar example.jar <MainClass> [-libjars $LIBJARS] arg1 arg2 … argN
-libjars parameter specifies runtime third-party dependencies to ship to remote nodes.
Some of the frameworks we will work with, such ...