docs: void enterRestore() {
          createZKDirectory(VoltZK.restore);
          createZKDirectory(VoltZK.restore_barrier);
          createZKDirectory(VoltZK.restore_barrier2);
  
          try {
              m_generatedRestoreBarrier2 = m_zk.create(VoltZK.restore_barrier2 + "/counter", null,
                          Ids.OPEN_ACL_UNSAFE, CreateMode.EPHEMERAL_SEQUENTIAL);
          } catch (Exception e) {
              VoltDB.crashGlobalVoltDB("Failed to create Zookeeper node: " + e.getMessage(),
                                       false, e);
          }
      }