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

    https://github.com/apache/flink/pull/4991#discussion_r156717989
  
    --- Diff: 
flink-runtime/src/test/java/org/apache/flink/runtime/clusterframework/types/ResourceProfileTest.java
 ---
    @@ -18,19 +18,21 @@
     
     package org.apache.flink.runtime.clusterframework.types;
     
    +import org.apache.flink.api.common.operators.ResourceSpec;
     import org.junit.Test;
     
    +import static org.junit.Assert.assertEquals;
     import static org.junit.Assert.assertFalse;
     import static org.junit.Assert.assertTrue;
     
     public class ResourceProfileTest {
     
        @Test
        public void testMatchRequirement() throws Exception {
    -           ResourceProfile rp1 = new ResourceProfile(1.0, 100, 100, 100);
    -           ResourceProfile rp2 = new ResourceProfile(1.0, 200, 200, 200);
    -           ResourceProfile rp3 = new ResourceProfile(2.0, 100, 100, 100);
    -           ResourceProfile rp4 = new ResourceProfile(2.0, 200, 200, 200);
    +           ResourceProfile rp1 = new ResourceProfile(1.0, 100, 100, 100, 
0, 0, null);
    --- End diff --
    
    better to use `Collections.emptyMap` because the extended resources is not 
marked as `Nullable`.


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