subprojects/parseq-zk-client/src/main/java/com/linkedin/parseq/zk/client/ZKUtil.java
private static long getSequenceNumber(String node) {
    final int length = node.length();
    try {
      String seqNumStr = node.substring(length - 10, length);
      return Long.valueOf(seqNumStr);
    } catch (IndexOutOfBoundsException | NumberFormatException ex) {
      throw new IllegalArgumentException(String.format("znode %s doesn't have sequence number", node));
    }
  }
private static long getSequenceNumber(String node) {
    final int length = node.length();
    try {
      String seqNumStr = node.substring(length - 10, length);
      return Long.valueOf(seqNumStr);
    } catch (IndexOutOfBoundsException | NumberFormatException ex) {
      throw new IllegalArgumentException(String.format("znode %s doesn't have sequence number", node));
    }
  }
Gets 10 digit sequence number from the given znode per:
http://zookeeper.apache.org/doc/trunk/zookeeperProgrammers.html#Sequence+Nodes+--+Unique+Naming