@VisibleForTesting
  public Journal getJournal(String  jid) {
    return journalsById.get(jid);
  }
@Test(timeout=100000)
  public void testJournalDefaultDirForOneNameSpace() {
    Collection<String> nameServiceIds = DFSUtilClient.getNameServiceIds(conf);
    setupStaticHostResolution(2, "journalnode");
    String jid = "test-journalid-ns1";
    Journal nsJournal = jn.getJournal(jid);
    JNStorage journalStorage = nsJournal.getStorage();
    File editsDir = new File(MiniDFSCluster.getBaseDirectory() +
        File.separator + "TestJournalNode" + File.separator + "ns1" + File
        .separator + jid);
    assertEquals(editsDir.toString(), journalStorage.getRoot().toString());
    jid = "test-journalid-ns2";
    nsJournal = jn.getJournal(jid);
    journalStorage = nsJournal.getStorage();
    editsDir = new File(DFSConfigKeys.DFS_JOURNALNODE_EDITS_DIR_DEFAULT +
        File.separator + jid);
    assertEquals(editsDir.toString(), journalStorage.getRoot().toString());
  }