Github user kellyzly commented on the pull request:
https://github.com/apache/spark/pull/4491#issuecomment-74217212
@tgravescs: I want ask a questions why
org.apache.hadoop.mapreduce.MRJobConfig which marked
"InterfaceAudience.Private" can be imported in
org.apache.spark.deploy.yarn.Client.scala?
Line 795:
```
private[yarn] def getDefaultMRApplicationClasspath: Option[Seq[String]] =
{
val triedDefault = Try[Seq[String]] {
val field =
classOf[MRJobConfig].getField("DEFAULT_MAPREDUCE_APPLICATION_CLASSPATH")
...
}
```
org.apache.hadoop.mapreduce.MRJobConfig
```
@InterfaceAudience.Private
@InterfaceStability.Evolving
public interface MRJobConfig {
...
}
```
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