HDFS-17503. Unreleased volume references because of OOM. (apache#6782)

Author: zhuzilong2013

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java

@@ -434,12 +434,12 @@ class BlockSender implements java.io.Closeable {
       blockIn = datanode.data.getBlockInputStream(block, offset); // seek to offset
       ris = new ReplicaInputStreams(
           blockIn, checksumIn, volumeRef, fileIoProvider);
-    } catch (IOException ioe) {
+    } catch (Throwable t) {
       IOUtils.cleanupWithLogger(null, volumeRef);
       IOUtils.closeStream(this);
       IOUtils.closeStream(blockIn);
       IOUtils.closeStream(checksumIn);
-      throw ioe;
+      throw t;
     }
   }