@Override
  public List<DelegationTokenIdentifier> getAllDelegationTokenIdentifiers() {
    String containerNode = rootNode + NODE_TOKENS;
    final List<String> nodes = zkGetChildren(containerNode);
    List<DelegationTokenIdentifier> result = new java.util.ArrayList<DelegationTokenIdentifier>(
        nodes.size());
    for (String node : nodes) {
      DelegationTokenIdentifier id = new DelegationTokenIdentifier();
      try {
        TokenStoreDelegationTokenSecretManager.decodeWritable(id, node);
        result.add(id);
      } catch (Exception e) {
        LOGGER.warn("Failed to decode token '{}'", node);
      }
    }
    return result;
  }
Parse comma separated list of ACL entries to secure generated nodes, e.g.
<code>sasl:hive/host1@MY.DOMAIN:cdrwa,sasl:hive/host2@MY.DOMAIN:cdrwa</code>
@param aclString
@return ACL list
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/security/ZooKeeperTokenStore.java