@Test
  public void testPrefetchDoesntSkipHFileLink() throws Exception {
    testPrefetchWhenHFileLink(c -> {
      boolean isCached = c != null;
      assertTrue(isCached);
    });
  }
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