More supervisor containers allocated than expected.

[Sean Zhong]

I try to allocate 8 supervisors by 

 bin/storm-yarn addSupervisors  -appId=application_1390868063414_0016 -supervisors=8

But get 12 supervisors returned. Why it behaves like this?

The storm-yarn master log and yarn-site.xml is attached.

Sean

[Roshan Punnoose]

Since it is adding supervisors, did you already have 4 supervisors running when you added 8?

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[Sean Zhong(clockfly)]

No, the cluster is started with initial supervisors of 0.

[Bobby Evans]

Not really sure.  I can see in the logs that it got a request to put in 8 containers, but 3 times the RM returned 4 new containers for it to use.  My guess is that we have something messed up in our logic that updates the new container request.  There may be a race or something.  We probably want to look at getting some debug information about exactly what we are sending back as part of the heartbeat when it changes.

—Bobby