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From tillrohrmann <...@git.apache.org>
Subject [GitHub] flink pull request #4757: [FLINK-7694][REST][Webfrontend]Port JobMetricsHand...
Date Thu, 02 Nov 2017 17:48:24 GMT
Github user tillrohrmann commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4757#discussion_r148606465
  
    --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/rest/messages/metrics/MetricsOverview.java
---
    @@ -0,0 +1,40 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +
    +package org.apache.flink.runtime.rest.messages.metrics;
    +
    +import org.apache.flink.runtime.rest.messages.ResponseBody;
    +
    +import java.util.ArrayList;
    +import java.util.Collection;
    +
    +/**
    + * Response of metrics handlers, represented as a list of {@link MetricEntry}.
    + */
    +public class MetricsOverview extends ArrayList<MetricEntry> implements ResponseBody
{
    --- End diff --
    
    Let's not directly extend from `ArrayList` but instead use composition.


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