Project: mesos
Issue MESOS-4255: Add mechanism for testing recovery of HTTP based executors
Currently, the slave process generates a process ID every time it is initialized via {{process::ID::generate}} function call. This is a problem for testing HTTP executors as it can't retry if there is a disconnection after an agent restart since the prefix is incremented. {code} Agent PID before: slave(1)@127.0.0.1:43915 Agent PID after restart: slave(2)@127.0.0.1:43915 {code} There are a couple of ways to fix this: - Add a constructor to {{Slave}} exclusively for testing that passes on a fixed {{ID}} instead of relying on {{ID::generate}}. - Currently we delegate to slave(1)@ i.e. (1) when nothing is specified as the URL in libprocess i.e. {{127.0.0.1:43915/api/v1/executor}} would delegate to {{slave(1)@127.0.0.1:43915/api/v1/executor}}. Instead of defaulting to (1), we can default to the last known active ID.
Story points: 3