func (zkts *Server) UpdateShard(si *topo.ShardInfo) error {
shardPath := path.Join(globalKeyspacesPath, si.Keyspace(), "shards", si.ShardName())
_, err := zkts.zconn.Set(shardPath, si.Json(), -1)
if err != nil {
if zookeeper.IsError(err, zookeeper.ZNONODE) {
err = topo.ErrNoNode
}
}
return err
}