{"push_id":822577817,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"0c627d38288594c61eb954b9095d6133290d0f69","before":"b60fc8d798b9ca0e96eb68f7ecef8cd34b5f11bc","commits":[{"sha":"0c627d38288594c61eb954b9095d6133290d0f69","author":{"email":"81396bcfe4924e926e37a994a76083a02feb26ee@gmail.com","name":"truthatt11"},"message":"checkpoint2","distinct":true,"url":"https://api.github.com/repos/truthatt11/hdfs_hw1/commits/0c627d38288594c61eb954b9095d6133290d0f69"}]}