@Override
    public void configure(JobConf job) {
      try {
        initialize(job);
      } catch (IOException exception) {
        throw new RuntimeException("Failed to initialize.", exception);
      }
    }
Verify the example we present in javadocs on TableInputFormatBase
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapred/TestTableInputFormat.java