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Posted to dev@flink.apache.org by "testfixer0 (Jira)" <ji...@apache.org> on 2020/02/29 23:49:00 UTC

[jira] [Created] (FLINK-16351) Use LinkedHashMap for deterministic iterations

testfixer0 created FLINK-16351:
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             Summary: Use LinkedHashMap for deterministic iterations
                 Key: FLINK-16351
                 URL: https://issues.apache.org/jira/browse/FLINK-16351
             Project: Flink
          Issue Type: Bug
          Components: Tests
            Reporter: testfixer0


The test `testSimple` in `MapBundleOperatorTest` may fail due if `HashMap` iterates in a different order. Specifically, `assertThat(Arrays.asList("k1=v1,v2", "k2=v3"), is(func.getOutputs()))` may fail. `testSimple` depends on `open` in class `AbstractMapBundleOperator`. The field `bundle` is a `HashMap`. However, `HashMap` does not guarantee any specific order of entries. Thus, the test can fail due to a different iteration order.



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