[jira] [Created] (MESOS-4445) Labels equality behavior is wrong

[Neil Conway (JIRA)]

Neil Conway created MESOS-4445:
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             Summary: Labels equality behavior is wrong
                 Key: MESOS-4445
                 URL: https://issues.apache.org/jira/browse/MESOS-4445
             Project: Mesos
          Issue Type: Bug
          Components: general
            Reporter: Neil Conway


{noformat}
TEST(RevocableResourceTest, LabelSemantics)
{
  Labels labels1;
  Labels labels2;

  labels1.add_labels()->CopyFrom(createLabel("foo", "bar"));
  labels1.add_labels()->CopyFrom(createLabel("foo", "bar"));

  labels2.add_labels()->CopyFrom(createLabel("foo", "bar"));
  labels2.add_labels()->CopyFrom(createLabel("baz", "qux"));

  bool eq = (labels1 == labels2);
  LOG(INFO) << "Equal? " << (eq ? "true" : "false");
}
{noformat}

Output:
{noformat}
[ RUN      ] RevocableResourceTest.LabelSemantics
I0120 13:15:25.207223 2078158848 resources_tests.cpp:1990] Equal? true
[       OK ] RevocableResourceTest.LabelSemantics (0 ms)
{noformat}

This behavior seems pretty problematic. The result also changes if you reorder 
the entries in the second {{Labels}} object---a {{Labels}} object is not 
supposed to be order-sensitive.



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