private void deleteRecoveredEdits(FileSystem fs, Iterable<Path> files) throws IOException {
    for (Path file : files) {
      if (!fs.delete(file, false)) {
        LOG.error("Failed delete of {}", file);
      } else {
        LOG.debug("Deleted recovered.edits file={}", file);
      }
    }
  }
Check the collection of families for valid timestamps
@param now current timestamp
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java