public static String getRescanNode(ZKWatcher zkw) {
    return ZNodePaths.joinZNode(zkw.getZNodePaths().splitLogZNode, "RESCAN");
  }
Gets the full path node name for the log file being split. This method will url encode the
filename.
@param zkw      zk reference
@param filename log file name (only the basename)
hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKSplitLog.java