code: private void setupCurrentEditStream(long txid) throws IOException {
      // get new stream
      currentEditLogInputStream = JournalSet.getInputStream(remoteJournalManager,
          txid);
      // we just started a new log segment
      currentSegmentTxId = txid;
      // indicate that we successfully reopened the stream
      mostRecentlyReadTransactionTime = now();
    }
docs: Setup the input stream to be consumed by the reader. The input stream
  corresponds to a single segment.