private Path writeStoreFile(String fname) throws IOException {
    HFileContext meta = new HFileContextBuilder().withBlockSize(DATA_BLOCK_SIZE).build();
    return writeStoreFile(fname, meta);
  }
Read a storefile in the same manner as a scanner -- using non-positional reads and without
waiting for prefetch to complete.
hbase-server/src/test/java/org/apache/hadoop/hbase/io/hfile/TestPrefetch.java