Veteran indie filmmaker Mark Duplass is set to direct Village Roadshow's adaptation of David Grossman's acclaimed novel A Horse Walks Into a Bar, Collider has confirmed. Set in Israel, A Horse Walks Into a Bar is about a controversial 57-year-old comedian named Dovaleh Greenstein, who invites an old friend, a retired judge named Avishai Lazar, to watch him perform stand-up at a local bar one night. The two men haven't spoken in over 40 years, and as Greenstein confronts a personal crisis over the course of the two-hour performance, we learn of a …