Hi all,
I want to add some unit testing for container allocation flow in
StreamingAppMasterService class. Some of the scenarios like consecutive
node failures etc. are hard to simulate manually and would be nice to cover
that through unit testing.
I am right now exploring 2 options: Mocking RMClient responses using
Mockito and via MiniYARNCluster.
Mockito route requires some refactoring in StreamingAppMasterService. If
we divide execute method in multiple functions, then those can be tested
individually. It gives more flexibility to simulate failure scenarios.
With MiniYARNCluster, we have a few tests in StreamMiniClusterTest. These
are probably good end-to-end tests. But I don't know if we can set
container launch failures.
Please suggest which is best way to go :)
Thanks!
Isha
