Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/396#discussion_r11640828
--- Diff:
yarn/common/src/main/scala/org/apache/spark/deploy/yarn/YarnSparkHadoopUtil.scala
---
@@ -17,10 +17,19 @@
package org.apache.spark.deploy.yarn
+import java.util.Map
+import java.util.regex.Matcher
+import java.util.regex.Pattern
+
+import scala.collection.mutable.HashMap
+import scala.collection.mutable.Map
+
import org.apache.hadoop.io.Text
import org.apache.hadoop.mapred.JobConf
import org.apache.hadoop.security.Credentials
import org.apache.hadoop.security.UserGroupInformation
+import org.apache.hadoop.util.Shell
--- End diff --
Shell is marked as limited private:
@InterfaceAudience.LimitedPrivate({"HDFS", "MapReduce"})
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