Recursive mutations are not prevented when using N1QL

function OnUpdate(doc,meta) {

    try {

        var docId = new Date();

        sleep(1000);

        var insert_ = INSERT INTO `src_bucket` ( KEY, VALUE ) VALUES ( :docId ,:docId);

        insert_.execQuery();

        dst_bucket[docId]=new Date();

    } catch (e) {

        log(e);

    }

}

function sleep(milliseconds) {

  var start = new Date().getTime();

  for (var i = 0; i < 1e7; i++) {

    if ((new Date().getTime() - start) > milliseconds){

      break;

    }

  }

}