private void addColumnSetToScan(Scan scan, int[] colIds) {
    for (int colId : colIds) {
      scan.addColumn(FAMILY_BYTES, Bytes.toBytes(qualFromId(colId)));
    }
  }
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