Fixed issues based on Andrew's comments.

core/src/main/scala/org/apache/spark/broadcast/HttpBroadcast.scala

@@ -43,10 +43,8 @@ private[spark] class HttpBroadcast[T](@transient var value_ : T, isLocal: Boolea
   val blockId = BroadcastBlockId(id)
 
   /*
-   * Broadcasted data is also stored in the BlockManager of the driver.
-   * The BlockManagerMaster
-   * does not need to be told about this block as not only
-   * need to know about this data block.
+   * Broadcasted data is also stored in the BlockManager of the driver. The BlockManagerMaster
+   * does not need to be told about this block as not only need to know about this data block.
    */
   HttpBroadcast.synchronized {
     SparkEnv.get.blockManager.putSingle(

core/src/main/scala/org/apache/spark/storage/BlockManagerMaster.scala

@@ -193,7 +193,7 @@ class BlockManagerMaster(var driverActor: ActorRef, conf: SparkConf) extends Log
    * updated block statuses. This is useful when the master is not informed of the given block
    * by all block managers.
    */
-  def getMatcinghBlockIds(
+  def getMatchinghBlockIds(
       filter: BlockId => Boolean,
       askSlaves: Boolean): Seq[BlockId] = {
     val msg = GetMatchingBlockIds(filter, askSlaves)

core/src/main/scala/org/apache/spark/storage/BlockManagerSlaveActor.scala

@@ -39,26 +39,26 @@ class BlockManagerSlaveActor(
   // Operations that involve removing blocks may be slow and should be done asynchronously
   override def receive = {
     case RemoveBlock(blockId) =>
-      doAsync[Boolean]("removing block", sender) {
+      doAsync[Boolean]("removing block " + blockId, sender) {
         blockManager.removeBlock(blockId)
         true
       }
 
     case RemoveRdd(rddId) =>
-      doAsync[Int]("removing RDD", sender) {
+      doAsync[Int]("removing RDD " + rddId, sender) {
         blockManager.removeRdd(rddId)
       }
 
     case RemoveShuffle(shuffleId) =>
-      doAsync[Boolean]("removing shuffle", sender) {
+      doAsync[Boolean]("removing shuffle " + shuffleId, sender) {
         if (mapOutputTracker != null) {
           mapOutputTracker.unregisterShuffle(shuffleId)
         }
         blockManager.shuffleBlockManager.removeShuffle(shuffleId)
       }
 
     case RemoveBroadcast(broadcastId, tellMaster) =>
-      doAsync[Int]("removing RDD", sender) {
+      doAsync[Int]("removing broadcast " + broadcastId, sender) {
         blockManager.removeBroadcast(broadcastId, tellMaster)
       }
 
@@ -72,8 +72,7 @@ class BlockManagerSlaveActor(
   private def doAsync[T](actionMessage: String, responseActor: ActorRef)(body: => T) {
     val future = Future {
       logDebug(actionMessage)
-      val response = body
-      response
+      body
     }
     future.onSuccess { case response =>
       logDebug("Done " + actionMessage + ", response is " + response)

core/src/main/scala/org/apache/spark/storage/DiskBlockManager.scala

@@ -47,7 +47,6 @@ private[spark] class DiskBlockManager(shuffleManager: ShuffleBlockManager, rootD
   private val subDirs = Array.fill(localDirs.length)(new Array[File](subDirsPerLocalDir))
   private var shuffleSender : ShuffleSender = null
 
-
   addShutdownHook()
 
   /**

core/src/test/scala/org/apache/spark/ContextCleanerSuite.scala

@@ -166,8 +166,7 @@ class ContextCleanerSuite extends FunSuite with BeforeAndAfter with LocalSparkCo
     sc.stop()
 
     val conf2 = new SparkConf()
-      .setMaster("local[4]")
-      //.setMaster("local-cluster[2, 1, 512]")
+      .setMaster("local-cluster[2, 1, 512]")
       .setAppName("ContextCleanerSuite")
       .set("spark.cleaner.referenceTracking.blocking", "true")
     sc = new SparkContext(conf2)
@@ -180,7 +179,7 @@ class ContextCleanerSuite extends FunSuite with BeforeAndAfter with LocalSparkCo
     val shuffleIds = 0 until sc.newShuffleId
     val broadcastIds = 0L until numBroadcasts
 
-    val preGCTester =  new CleanerTester(sc, rddIds, shuffleIds, broadcastIds)
+    val preGCTester = new CleanerTester(sc, rddIds, shuffleIds, broadcastIds)
     runGC()
     intercept[Exception] {
       preGCTester.assertCleanup()(timeout(1000 millis))
@@ -391,22 +390,22 @@ class CleanerTester(
     toBeCleanedBroadcstIds.isEmpty
 
   private def getRDDBlocks(rddId: Int): Seq[BlockId] = {
-    blockManager.master.getMatcinghBlockIds( _ match {
-      case RDDBlockId(rddId, _) => true
+    blockManager.master.getMatchinghBlockIds( _ match {
+      case RDDBlockId(`rddId`, _) => true
       case _ => false
     }, askSlaves = true)
   }
 
   private def getShuffleBlocks(shuffleId: Int): Seq[BlockId] = {
-    blockManager.master.getMatcinghBlockIds( _ match {
-      case ShuffleBlockId(shuffleId, _, _) => true
+    blockManager.master.getMatchinghBlockIds( _ match {
+      case ShuffleBlockId(`shuffleId`, _, _) => true
       case _ => false
     }, askSlaves = true)
   }
 
   private def getBroadcastBlocks(broadcastId: Long): Seq[BlockId] = {
-    blockManager.master.getMatcinghBlockIds( _ match {
-      case BroadcastBlockId(broadcastId, _) => true
+    blockManager.master.getMatchinghBlockIds( _ match {
+      case BroadcastBlockId(`broadcastId`, _) => true
       case _ => false
     }, askSlaves = true)
   }

core/src/test/scala/org/apache/spark/storage/BlockManagerSuite.scala

@@ -862,29 +862,29 @@ class BlockManagerSuite extends FunSuite with BeforeAndAfter with PrivateMethodT
       securityMgr, mapOutputTracker)
     val list = List.fill(2)(new Array[Byte](10))
 
-    // Tell master. By LRU, only list2 and list3 remains.
+    // insert some blocks
     store.put("list1", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = true)
     store.put("list2", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = true)
     store.put("list3", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = true)
 
     // getLocations and getBlockStatus should yield the same locations
-    assert(store.master.getMatcinghBlockIds(_.toString.contains("list"), askSlaves = false).size === 3)
-    assert(store.master.getMatcinghBlockIds(_.toString.contains("list1"), askSlaves = false).size === 1)
+    assert(store.master.getMatchinghBlockIds(_.toString.contains("list"), askSlaves = false).size === 3)
+    assert(store.master.getMatchinghBlockIds(_.toString.contains("list1"), askSlaves = false).size === 1)
 
-    // Tell master. By LRU, only list2 and list3 remains.
+    // insert some more blocks
     store.put("newlist1", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = true)
     store.put("newlist2", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = false)
     store.put("newlist3", list.iterator, StorageLevel.MEMORY_AND_DISK, tellMaster = false)
 
     // getLocations and getBlockStatus should yield the same locations
-    assert(store.master.getMatcinghBlockIds(_.toString.contains("newlist"), askSlaves = false).size === 1)
-    assert(store.master.getMatcinghBlockIds(_.toString.contains("newlist"), askSlaves = true).size === 3)
+    assert(store.master.getMatchinghBlockIds(_.toString.contains("newlist"), askSlaves = false).size === 1)
+    assert(store.master.getMatchinghBlockIds(_.toString.contains("newlist"), askSlaves = true).size === 3)
 
     val blockIds = Seq(RDDBlockId(1, 0), RDDBlockId(1, 1), RDDBlockId(2, 0))
     blockIds.foreach { blockId =>
       store.put(blockId, list.iterator, StorageLevel.MEMORY_ONLY, tellMaster = true)
     }
-    val matchedBlockIds = store.master.getMatcinghBlockIds(_ match {
+    val matchedBlockIds = store.master.getMatchinghBlockIds(_ match {
       case RDDBlockId(1, _) => true
       case _ => false
     }, askSlaves = true)

core/src/test/scala/org/apache/spark/util/JsonProtocolSuite.scala

@@ -108,7 +108,7 @@ class JsonProtocolSuite extends FunSuite {
     // BlockId
     testBlockId(RDDBlockId(1, 2))
     testBlockId(ShuffleBlockId(1, 2, 3))
-    testBlockId(BroadcastBlockId(1L, "<Insert words of wisdom here>"))
+    testBlockId(BroadcastBlockId(1L, "insert_words_of_wisdom_here"))
     testBlockId(TaskResultBlockId(1L))
     testBlockId(StreamBlockId(1, 2L))
   }