Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/3841#issuecomment-69408162
I see, this is because the initialization of `SparkEnv` already calls
`startServiceOnPort`, at which point `SparkEnv.get` is not ready. So can we
define the following:
```
def startServiceOnPort[T](
...
conf: SparkConf): (T, Int) = {
val retries = portMaxRetries(conf)
startServiceOnPort[T](..., retries)
}
```
Basically the idea is to pass the conf to `startServiceOnPort` to find the
max retries instead of always finding it from `SparkEnv`.
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