private void test(Path file) throws IOException, InterruptedException, ExecutionException {
    EventLoop eventLoop = EVENT_LOOP_GROUP.next();
    FanOutOneBlockAsyncDFSOutput out = FanOutOneBlockAsyncDFSOutputHelper.createOutput(FS, file,
      true, false, (short) 3, FS.getDefaultBlockSize(), eventLoop, CHANNEL_CLASS, MONITOR, true);
    TestFanOutOneBlockAsyncDFSOutput.writeAndVerify(FS, file, out);
  }
Sets up {@link MiniKdc} for testing security. Uses {@link HBaseKerberosUtils} to set the given
keytab file as {@link HBaseKerberosUtils#KRB_KEYTAB_FILE}.
hbase-asyncfs/src/test/java/org/apache/hadoop/hbase/io/asyncfs/TestSaslFanOutOneBlockAsyncDFSOutput.java