Github user squito commented on the pull request:
https://github.com/apache/spark/pull/7753#issuecomment-126282507
Since we'll eventually want to add more metrics, can you put all the netty
metrics into another case class inside `ExecutorMetrics`?
Also, I'm wondering if we want to use "netty" in the name -- I think most
users won't know or care about netty in particular. It should it just be named
"network" or "transport", and the nio implementation should indicate that
metrics are missing.
I guess altogether this means doing something like:
```scala
class ExecutorMetrics {
var transportMetrics: Option[TransportMetrics] = ...
}
```
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