title: How can I get the HBase table name from a Result object as the mapreduce parameter?
body: <p>HBASE-3996
  Support multiple tables and scanners as input to the mapper in map/reduce job.
  The map function always looks as follows:</p>
  
  <pre><code>public void map(ImmutableBytesWritable row, Result value, Context context)
  </code></pre>
  
  <p>In the map function, how can I distinguish which table the (Result)value comes from?</p>