Github user uce commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3128#discussion_r97316951
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/metrics/dump/MetricDumpSerialization.java
 ---
    @@ -191,62 +233,65 @@ private static void serializeMeter(DataOutputStream 
dos, Meter meter) throws IOE
                 *
                 * @param data serialized metrics
                 * @return A list containing the deserialized metrics.
    -            * @throws IOException
                 */
    -           public List<MetricDump> deserialize(byte[] data) throws 
IOException {
    -                   ByteArrayInputStream bais = new 
ByteArrayInputStream(data);
    -                   DataInputStream dis = new DataInputStream(bais);
     
    -                   int numCounters = dis.readInt();
    -                   int numGauges = dis.readInt();
    -                   int numHistograms = dis.readInt();
    -                   int numMeters = dis.readInt();
    +           public List<MetricDump> 
deserialize(MetricDumpSerialization.MetricSerializationResult data) {
    --- End diff --
    
    Furthermore, after that line. And there is an empty line after the JavaDoc 
of `deserialize`.


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