Hi,
I took a look at dynamic reservation design doc and the related code in Mesos master, it seem dynamic reservation works in role level rather than in framework level, that means a framework can only reserve some resources for its role rather than itself. If so, then I am thinking about this case: both Cassandra framework and HDFS framework belongs to role1, and HDFS dynamically reserves some resources in a slave for role1, then I think it may be possible for allocator to offer those resources to Cassandra since it also belongs to role1, but actually HDFS expects to be offered with those resources to launch its tasks. Please anyone correct me if my understanding above was wrong, thanks! Regards, Qian Zhang
