@Test
  public void testTableRecordReaderScannerFailMapreduce() throws IOException, InterruptedException {
    Table htable = createIOEScannerTable(Bytes.toBytes("table2-mr"), 1);
    runTestMapreduce(htable);
  }
Run test assuming Scanner IOException failure using newer mapreduce api
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormat.java