Github user andrewor14 commented on a diff in the pull request: https://github.com/apache/spark/pull/1256#discussion_r17457393 --- Diff: core/src/main/scala/org/apache/spark/SparkConf.scala --- @@ -307,6 +317,27 @@ class SparkConf(loadDefaults: Boolean) extends Cloneable with Logging { def toDebugString: String = { settings.toArray.sorted.map{case (k, v) => k + "=" + v}.mkString("\n") } + + /** Load properties from file. */ + private[spark] def loadPropertiesFromFile(fileName: String, isOverride: Boolean = false) { + val file = new File(fileName) + if (file.isFile()) { + loadProperties(Utils.getPropertiesFromFile(file.getAbsolutePath), isOverride) + } + } + + /** Load any spark.* system properties */ + private[spark] def loadSystemProperties() { + loadProperties(sys.props.toSeq, true) + } + + private def loadProperties(seq: Seq[(String, String)], isOverride: Boolean) { + for ((k, v) <- seq if k.startsWith("spark.")) { + if (isOverride || settings.get(k).isEmpty) { + settings(k) = v + } + } + } --- End diff -- Hm, I actually don't think any of this logic should exist in `SparkConf`. The current model is that by the time we get here all the properties from the file are already loaded into `sys.props` so we can just load those. This is a nice abstraction because `SparkConf` doesn't have to be concerned with where the properties file is.
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