I had the same problem but Amreshwari's suggestion solved it. I am porting a
code from the 0.18.3 API to 0.20.2 API. I am now facing problems with the
setting of keys through Configuration object. The value set during
configuration using conf.setBoolean(<String value>, <default boolean value>)
is not retrieved in the mapper. I then ported the WordCountv2.0 example
provided in the MapReduce tutorial and upgraded it to use the new API but it
has the same problem. It works fine with the 0.18.3 API but fails in the
upgraded version. When I try to get the name of the input file using
inputFile = conf.get("map.input.file");
it prints null...
Kindly let me know how to set values of these user-defined keys in the new
API.
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