testfixer0 created FLINK-15975:
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Summary: Use LinkedHashMap for deterministic iterations
Key: FLINK-15975
URL: https://issues.apache.org/jira/browse/FLINK-15975
Project: Flink
Issue Type: Improvement
Components: Connectors / Hive
Reporter: testfixer0
The test `testMap` in `HiveGenericUDFTest` invokes two methods
`HiveGenericUDFTest.init` and `HiveScalarFunction.eval`. These two methods
depend on `getConversion` and `toFlinkObject` in class `HiveInspectors`. When
the `inspector` is the instance of `MapObjectInspector`, it can return a
`HashMap`. However, `HashMap` does not guarantee any specific order of entries.
Thus, the test can fail due to a different iteration order.
In this PR, we propose to use a `LinkedHashMap` instead to guarantee the
iteration order.
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