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From zentol <...@git.apache.org>
Subject [GitHub] flink pull request #3721: [FLINK-4545] replace the network buffers parameter
Date Tue, 18 Apr 2017 16:44:11 GMT
Github user zentol commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3721#discussion_r112001266
  
    --- Diff: flink-dist/src/test/java/org/apache/flink/dist/TaskManagerHeapSizeCalculationJavaBashTest.java
---
    @@ -0,0 +1,306 @@
    +/*
    + * 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.dist;
    +
    +import org.apache.flink.configuration.Configuration;
    +import org.apache.flink.configuration.TaskManagerOptions;
    +import org.apache.flink.runtime.taskexecutor.TaskManagerServices;
    +import org.apache.flink.util.OperatingSystem;
    +import org.apache.flink.util.TestLogger;
    +import org.junit.Assume;
    +import org.junit.Before;
    +import org.junit.Test;
    +
    +import java.io.BufferedReader;
    +import java.io.IOException;
    +import java.io.InputStreamReader;
    +import java.util.Random;
    +
    +import static org.hamcrest.CoreMatchers.allOf;
    +import static org.hamcrest.Matchers.greaterThanOrEqualTo;
    +import static org.hamcrest.Matchers.lessThanOrEqualTo;
    +import static org.junit.Assert.assertEquals;
    +import static org.junit.Assert.assertThat;
    +
    +/**
    + * Unit test that verifies that the task manager heap size calculation used by the bash
script
    + * <tt>taskmanager.sh</tt> returns the same values as the heap size calculation
of
    + * {@link TaskManagerServices#calculateHeapSizeMB(long, Configuration)}.
    + *
    + * NOTE: the shell script uses <tt>awk</tt> to perform floating-point arithmetic
which uses
    + * <tt>double</tt> precision but our Java code restrains to <tt>float</tt>
because we actually do
    + * not need high precision.
    + */
    +public class TaskManagerHeapSizeCalculationJavaBashTest extends TestLogger {
    +
    +	/** Key that is used by <tt>config.sh</tt>. */
    +	private static final String KEY_TASKM_MEM_SIZE = "taskmanager.heap.mb";
    +
    +	/**
    +	 * Number of tests with random values.
    +	 *
    +	 * NOTE: calling the external test script is slow and thus low numbers are preferred
for general
    +	 * testing.
    +	 */
    +	private static final int NUM_RANDOM_TESTS = 20;
    +
    +	@Before
    +	public void checkOperatingSystem() {
    +		Assume.assumeTrue("This test checks shell scripts not available on Windows.",
    --- End diff --
    
    missing "that are"?


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