private Path writeStoreFile(String fname, HFileContext context) throws IOException {
    return writeStoreFile(fname, context, cacheConf);
  }
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