private void deleteFileOnRecovery(File f) {
    try {
      f.delete();
    } catch (Exception ignore) {
      // ignore, one more attempt to delete the file failed
    }
  }
Get the oplog specified

@param id int oplogId to be got
@return Oplogs the oplog corresponding to the oplodId, id
geode-core/src/main/java/org/apache/geode/internal/cache/PersistentOplogSet.java