fileSystem.deleteIfExists(entry.cleanFiles[t])
          fileSystem.deleteIfExists(entry.dirtyFiles[t])
        }
        i.remove()
      }
    }
  }

  /**
   * Creates a new journal that omits redundant information. This replaces the current journal if it
   * exists.
   */
  @Synchronized
  @Throws(IOException::class)
  internal fun rebuildJournal() {
    journalWriter?.close()