I'm trying to use a newer version of a library (jersey) than is included with my hadoop distribution. I have its classes in a jar in my workflow's lib directory, and need those classes to precede hadoop's version of them on the classpath when executing a java action in my worflow. I've tried setting mapreduce.user.classpath.first=true, but that doesn't seem to accomplish what I need. Is there some way for me to alter the classpath precedence of the launcher map task?
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