Include the key name when failing on an invalid value.

Stephen Haberman · Stephen Haberman · commit 937740a42b05 · 2014-11-29T09:43:39.000-06:00
diff --git a/core/src/main/scala/org/apache/spark/SparkConf.scala b/core/src/main/scala/org/apache/spark/SparkConf.scala
@@ -61,7 +61,7 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging {
       throw new NullPointerException("null key")
     }
     if (value == null) {
-      throw new NullPointerException("null value")
+      throw new NullPointerException("null value for " + key)
     }
     settings(key) = value
     this

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging {`
`61`	`61`	`throw new NullPointerException("null key")`
`62`	`62`	`}`
`63`	`63`	`if (value == null) {`
`64`		`- throw new NullPointerException("null value")`
	`64`	`+ throw new NullPointerException("null value for " + key)`
`65`	`65`	`}`
`66`	`66`	`settings(key) = value`
`67`	`67`	`this`