rename 'doWork' into 'getIterator'

Author: cloud-fan

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

@@ -1016,24 +1016,24 @@ private[spark] class BlockManager(
       serializer: Serializer = defaultSerializer): Iterator[Any] = {
     bytes.rewind()
 
-    def doWork() = {
+    def getIterator = {
       val stream = wrapForCompression(blockId, new ByteBufferInputStream(bytes, true))
       serializer.newInstance().deserializeStream(stream).asIterator
     }
 
     if (blockId.isShuffle) {
       // Reducer may need to read many local shuffle blocks and will wrap them into Iterators
-      // at the beginning. The wrapping will cost some memory(compression instance
+      // at the beginning. The wrapping will cost some memory (compression instance
       // initialization, etc.). Reducer read shuffle blocks one by one so we could do the
       // wrapping lazily to save memory.
       class LazyProxyIterator(f: => Iterator[Any]) extends Iterator[Any] {
         lazy val proxy = f
         override def hasNext: Boolean = proxy.hasNext
         override def next(): Any = proxy.next()
       }
-      new LazyProxyIterator(doWork())
+      new LazyProxyIterator(getIterator)
     } else {
-      doWork()
+      getIterator
     }
   }