/**
   * Replace the journal at index <code>index</code> with one that throws an
   * exception on flush.
   * 
   * @param index the index of the journal to take offline.
   * @return the original <code>EditLogOutputStream</code> of the journal.
   */
/**
   * Replace the journal at index <code>index</code> with one that throws an
   * exception on flush.
   * 
   * @param index the index of the journal to take offline.
   * @return the original <code>EditLogOutputStream</code> of the journal.
   */ | TestEditLogJournalFailures.java