@Override
      public RecordReader<ImmutableBytesWritable, Result> createRecordReader(InputSplit split,
        TaskAttemptContext context) throws IOException, InterruptedException {
        return super.createRecordReader(split, context);
      }
Test getSplits only puts up one Connection. In past it has put up many Connections. Each
Connection setup comes with a fresh new cache so we have to do fresh hit on hbase:meta. Should
only do one Connection when doing getSplits even if a MultiTableInputFormat.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestMultiTableInputFormatBase.java