I have never heard of such tradition. There is though a tradition in an Ashkenazi(European Jewish) wedding that before the wedding ceremony begins, the parents of the bride and bridegroom sign a document and break a plate together. The document is called Tena'im. Many believed that the breaking plates is a Greek tradition, that isn't entirely the case. It was practiced in European Jewish communities a while before and even today its not deeply rooted in both traditions. In Greece, its illegal for safety reasons to break plates, which was traditionally done by throwing it to the feet of the dancer/singer etc or in celebration, in public and has since been replaced with flowers. And breaking plates during Tena'im signing is mainly done in Ashkenazi Orthodox Judaism.