[GitHub] keith-turner commented on issue #3: Update to Fluo 1.2, Accumulo 2.0, and Hadoop 3.0

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keith-turner commented on issue #3: Update to Fluo 1.2, Accumulo 2.0, and Hadoop 3.0
URL: https://github.com/apache/fluo-examples/pull/3#issuecomment-439659100
 
 
   I learned something while working on this.  Accumulo 2.0 is using a much newer version of Gauva and therefore Accumulo code is using newer Guava methods.  When I first started trying to run map reduce code Accumulo code was failing because Guava methods could not be found!!!  Hadoop was putting Guava 11 on the classpath.  I learned about the Hadoop settings `HADOOP_USE_CLIENT_CLASSLOADER` and `mapreduce.job.classloader` which run your code in a classloader with only hadoop code coming from the parent classloader.  Since I had shaded a newer version of guava into the stresso jar everything worked after using these settings.

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