Merge pull request #543 from holdenk/master

Re-enable deprecation warnings and fix deprecated warning.

core/src/main/scala/spark/CacheManager.scala

@@ -27,7 +27,7 @@ private[spark] class CacheManager(blockManager: BlockManager) extends Logging {
           if (loading.contains(key)) {
             logInfo("Loading contains " + key + ", waiting...")
             while (loading.contains(key)) {
-              try {loading.wait()} catch {case _ =>}
+              try {loading.wait()} catch {case _ : Throwable =>}
             }
             logInfo("Loading no longer contains " + key + ", so returning cached result")
             // See whether someone else has successfully loaded it. The main way this would fail

project/SparkBuild.scala

@@ -37,7 +37,7 @@ object SparkBuild extends Build {
     organization := "org.spark-project",
     version := "0.7.1-SNAPSHOT",
     scalaVersion := "2.9.2",
-    scalacOptions := Seq(/*"-deprecation",*/ "-unchecked", "-optimize"), // -deprecation is too noisy due to usage of old Hadoop API, enable it once that's no longer an issue
+    scalacOptions := Seq("-unchecked", "-optimize", "-deprecation"),
     unmanagedJars in Compile <<= baseDirectory map { base => (base / "lib" ** "*.jar").classpath },
     retrieveManaged := true,
     retrievePattern := "[type]s/[artifact](-[revision])(-[classifier]).[ext]",

streaming/src/main/scala/spark/streaming/dstream/QueueInputDStream.scala

@@ -28,7 +28,7 @@ class QueueInputDStream[T: ClassManifest](
     }
     if (buffer.size > 0) {
       if (oneAtATime) {
-        Some(buffer.first)
+        Some(buffer.head)
       } else {
         Some(new UnionRDD(ssc.sc, buffer.toSeq))
       }