public static List<Cell> getFromStoreFile(HStore store, byte[] row, NavigableSet<byte[]> columns)
    throws IOException {
    Get get = new Get(row);
    Map<byte[], NavigableSet<byte[]>> s = get.getFamilyMap();
    s.put(store.getColumnFamilyDescriptor().getName(), columns);

    return getFromStoreFile(store, get);
  }
Do a small get/scan against one store. This is required because store has no actual methods of
querying itself, and relies on StoreScanner.
hbase-server/src/test/java/org/apache/hadoop/hbase/HBaseTestingUtil.java