class ZkRuntimeState {
    /** */
    ZkWatcher watcher;

    /** */
    ZkAliveNodeDataWatcher aliveNodeDataWatcher;

    /** */
    volatile Exception errForClose;

    /** */
    final boolean reconnect;

    /** */
    volatile ZookeeperClient zkClient;

    /** */
    long internalOrder;

    /** */
    int joinDataPartCnt;

    /** */
    long gridStartTime;

    /** */
    volatile boolean joined;

    /** */
    ZkDiscoveryEventsData evtsData;

    /** */
    boolean crd;

    /** */
    String locNodeZkPath;

    /** */
    final ZkAliveNodeData locNodeInfo = new ZkAliveNodeData();

    /** */
    int procEvtCnt;

    /** */
    final ZkClusterNodes top = new ZkClusterNodes();

    /** */
    List<ClusterNode> commErrProcNodes;

    /** Timeout callback registering watcher for join error
     * (set this watcher after timeout as a minor optimization).
     */
    ZkTimeoutObject joinErrTo;

    /** Timeout callback set to wait for join timeout. */
    ZkTimeoutObject joinTo;

    /** Timeout callback to update processed events counter. */
    ZkTimeoutObject procEvtsUpdateTo;

    /** */
    boolean updateAlives;

    /**
     * @param reconnect {@code True} if joined topology before reconnect attempt.
     */
    ZkRuntimeState(boolean reconnect) {
        this.reconnect = reconnect;
    }

    /**
     * @param watcher Watcher.
     * @param aliveNodeDataWatcher Alive nodes data watcher.
     */
    void init(ZkWatcher watcher, ZkAliveNodeDataWatcher aliveNodeDataWatcher) {
        this.watcher = watcher;
        this.aliveNodeDataWatcher = aliveNodeDataWatcher;
    }

    /**
     * @param err Error.
     */
    void onCloseStart(Exception err) {<FILL_FUNCTION_BODY>}

    /**
     *
     */
    interface ZkWatcher extends Watcher, AsyncCallback.Children2Callback, AsyncCallback.DataCallback {
        // No-op.
    }

    /**
     *
     */
    interface ZkAliveNodeDataWatcher extends Watcher, AsyncCallback.DataCallback {
        // No-op.
    }
}

        assert err != null;

        errForClose = err;

        ZookeeperClient zkClient = this.zkClient;

        if (zkClient != null)
            zkClient.onCloseStart();
    
<no_super_class>