zhijiangW commented on a change in pull request #8455: [FLINK-12284,FLINK-12637][Network,Metrics]Fix the incorrect inputBufferUsage metric in credit-based network mode URL: https://github.com/apache/flink/pull/8455#discussion_r297508630
########## File path: flink-runtime/src/test/java/org/apache/flink/runtime/io/network/partition/consumer/InputBuffersMetricsTest.java ########## @@ -0,0 +1,203 @@ +/* + * 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.io.network.partition.consumer; + +import org.apache.flink.api.java.tuple.Tuple3; +import org.apache.flink.core.fs.CloseableRegistry; +import org.apache.flink.runtime.io.network.NettyShuffleEnvironment; +import org.apache.flink.runtime.io.network.NettyShuffleEnvironmentBuilder; +import org.apache.flink.runtime.io.network.TestingConnectionManager; +import org.apache.flink.runtime.io.network.buffer.Buffer; +import org.apache.flink.runtime.io.network.metrics.CreditBasedInputBuffersUsageGauge; +import org.apache.flink.runtime.io.network.metrics.ExclusiveBuffersUsageGauge; +import org.apache.flink.runtime.io.network.metrics.FloatingBuffersUsageGauge; +import org.apache.flink.runtime.io.network.partition.ResultPartitionID; +import org.apache.flink.runtime.io.network.partition.ResultPartitionType; +import org.apache.flink.util.TestLogger; + +import org.junit.Test; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.List; + +import static org.junit.Assert.assertEquals; + +/** + * Tests the metrics for input buffers usage. + */ +public class InputBuffersMetricsTest extends TestLogger { + + @Test + public void testBufferUsageMetrics() throws IOException, InterruptedException { Review comment: TBH, I think this test is too big for mixing many functions to be verified together. My suggestion is breaking it into several simple ones to make sure each test is only for verifying one function, then it would be very easy for reviewing and maintaining. E.g. if someone changes the logic of internal backlog future which might cause this test fail, if he wants to fix this test, he has to review the whole more than 100 lines for tracing the reason. If each test is short and only covering single function, then it would be very easy for other person, also you could find it easy to write single unit test. I could give some examples below. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
