diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
index 390bfe55fd9..48f351821fa 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
+++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
@@ -299,6 +299,9 @@ Trunk (Unreleased)
 
     HDFS-4382. Fix typo MAX_NOT_CHANGED_INTERATIONS. (Ted Yu via suresh)
 
+    HDFS-4328. TestLargeBlock#testLargeBlockSize is timing out. (Chris Nauroth
+    via atm)
+
 Release 2.0.3-alpha - Unreleased 
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
index 49eb7dc3acc..bbcb2dd2e1f 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
@@ -648,7 +648,7 @@ class BlockSender implements java.io.Closeable {
 
       ByteBuffer pktBuf = ByteBuffer.allocate(pktBufSize);
 
-      while (endOffset > offset) {
+      while (endOffset > offset && !Thread.currentThread().isInterrupted()) {
         manageOsCache();
         long len = sendPacket(pktBuf, maxChunksPerPacket, streamForSendChunks,
             transferTo, throttler);
@@ -656,16 +656,19 @@ class BlockSender implements java.io.Closeable {
         totalRead += len + (numberOfChunks(len) * checksumSize);
         seqno++;
       }
-      try {
-        // send an empty packet to mark the end of the block
-        sendPacket(pktBuf, maxChunksPerPacket, streamForSendChunks, transferTo,
-            throttler);
-        out.flush();
-      } catch (IOException e) { //socket error
-        throw ioeToSocketException(e);
-      }
+      // If this thread was interrupted, then it did not send the full block.
+      if (!Thread.currentThread().isInterrupted()) {
+        try {
+          // send an empty packet to mark the end of the block
+          sendPacket(pktBuf, maxChunksPerPacket, streamForSendChunks, transferTo,
+              throttler);
+          out.flush();
+        } catch (IOException e) { //socket error
+          throw ioeToSocketException(e);
+        }
 
-      sentEntireByteRange = true;
+        sentEntireByteRange = true;
+      }
     } finally {
       if (clientTraceFmt != null) {
         final long endTime = System.nanoTime();
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/DataTransferThrottler.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/DataTransferThrottler.java
index a4f04a68d44..d00d4341b94 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/DataTransferThrottler.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/util/DataTransferThrottler.java
@@ -96,7 +96,12 @@ public class DataTransferThrottler {
         // Wait for next period so that curReserve can be increased.
         try {
           wait( curPeriodEnd - now );
-        } catch (InterruptedException ignored) {}
+        } catch (InterruptedException e) {
+          // Abort throttle and reset interrupted status to make sure other
+          // interrupt handling higher in the call stack executes.
+          Thread.currentThread().interrupt();
+          break;
+        }
       } else if ( now <  (curPeriodStart + periodExtension)) {
         curPeriodStart = curPeriodEnd;
         curReserve += bytesPerPeriod;
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLargeBlock.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLargeBlock.java
index 3ca1cf3ec26..9563361094c 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLargeBlock.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestLargeBlock.java
@@ -158,7 +158,7 @@ public class TestLargeBlock {
    * Test for block size of 2GB + 512B
    * @throws IOException in case of errors
    */
-  @Test
+  @Test(timeout = 120000)
   public void testLargeBlockSize() throws IOException {
     final long blockSize = 2L * 1024L * 1024L * 1024L + 512L; // 2GB + 512B
     runTest(blockSize);