private void makeRegionDirs(List<String> regions) throws IOException {
    for (String region : regions) {
      LOG.debug("Creating dir for region " + region);
      fs.mkdirs(new Path(TABLEDIR, region));
    }
  }
See HBASE-27644, typically we should not have empty WALEdit but we should be able to process
it, instead of losing data after it.
hbase-server/src/test/java/org/apache/hadoop/hbase/wal/TestWALSplit.java