ctubbsii opened a new issue #422: Token file functionality for mapred code 
deprecated, but not replaced
URL: https://github.com/apache/accumulo/issues/422
   As fallout from the recent Connector builder stuff that @mikewalch worked on 
for 2.0, many of the old APIs were deprecated in the MapReduce code to be 
replaced with `ConnectionInfo`. However, the mapreduce APIs for storing an 
authentication token in a job's distributed cache, and reading it from within 
the mappers does not have an equivalent in the new code.
   What is needed is two things:
   1. The ability to serialize the entire connection info into the job, without 
exposing the credentials in the Hadoop configuration, and
   2. The ability to serialize arbitrary authentication tokens, not just the 
known ones that the current Connector builder has special code to handle. (A 
whole authentication token serializer was previously created for this purpose, 
but it is not used in the new code.)

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