@Before
  public void setUp() throws IOException {
    conf = TEST_UTIL.getConfiguration();
    fs = FileSystem.get(conf);
    conf.setInt(BloomFilterUtil.PREFIX_LENGTH_KEY, 10);
  }
Test a multi-column scanner when there is a Bloom filter false-positive. This is needed for the
multi-column Bloom filter optimization.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanWithBloomError.java