[jira] [Created] (CALCITE-3389) Test can fail if HashSet iterates in a different order

[contextshuffling (Jira)]

contextshuffling created CALCITE-3389:
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             Summary: Test can fail if HashSet iterates in a different order
                 Key: CALCITE-3389
                 URL: https://issues.apache.org/jira/browse/CALCITE-3389
             Project: Calcite
          Issue Type: Bug
            Reporter: contextshuffling


For test 
`testTenElementsSetLiteral`([https://github.com/apache/calcite/blob/78c2a007b5b597f673323b80dde21c23d31f23ea/linq4j/src/test/java/org/apache/calcite/linq4j/test/ExpressionTest.java#L1538)
 
|https://github.com/apache/calcite/blob/78c2a007b5b597f673323b80dde21c23d31f23ea/linq4j/src/test/java/org/apache/calcite/linq4j/test/ExpressionTest.java#L1538)]it
 relies on the iteration order of a HashSet. However, HashSet does not 
guarantee any specific order of entries. Tests can fail if the order changes. 

Please let me know if you want to discuss the changes more.



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