Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/1256#discussion_r15597856
  
    --- Diff: core/src/test/scala/org/apache/spark/SparkConfSuite.scala ---
    @@ -30,6 +32,23 @@ class SparkConfSuite extends FunSuite with 
LocalSparkContext {
         }
       }
     
    +  test("loading from file") {
    +    val outFile = File.createTempFile("sparkConf-loading-from-file", "")
    +    outFile.deleteOnExit()
    +    val outStream: FileWriter = new FileWriter(outFile)
    --- End diff --
    
    You could use 
[this](http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/io/Files.html#write(java.lang.CharSequence,%20java.io.File,%20java.nio.charset.Charset))
 method instead.


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