code: private void checkFail(String errorMsg) throws IOException {
      if (fsNamesys.failOnTxIdMismatch()) {
        FSEditLog.LOG.error(errorMsg);
        throw new IOException(errorMsg);
      }
      MetaRecoveryContext.editLogLoaderPrompt(errorMsg);
    }
docs: When encountering an error while loading the transaction, we can
  skip the problematic transaction and continue, first prompting the user.
  This will only be possible when NN is started with appropriate option.