[jira] [Issue Comment Deleted] (SPARK-22359) Improve the test coverage of window functions

["johnny (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-22359?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

johnny updated SPARK-22359:
---------------------------
    Comment: was deleted

(was: test)

> Improve the test coverage of window functions
> ---------------------------------------------
>
>                 Key: SPARK-22359
>                 URL: https://issues.apache.org/jira/browse/SPARK-22359
>             Project: Spark
>          Issue Type: Test
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Xingbo Jiang
>            Priority: Major
>              Labels: bulk-closed
>
> There are already quite a few integration tests using window functions, but the unit tests coverage for window funtions is not ideal.
> We'd like to test the following aspects:
> * Specifications
> ** different partition clauses (none, one, multiple)
> ** different order clauses (none, one, multiple, asc/desc, nulls first/last)
> * Frames and their combinations
> ** OffsetWindowFunctionFrame
> ** UnboundedWindowFunctionFrame
> ** SlidingWindowFunctionFrame
> ** UnboundedPrecedingWindowFunctionFrame
> ** UnboundedFollowingWindowFunctionFrame
> * Aggregate function types
> ** Declarative
> ** Imperative
> ** UDAF
> * Spilling
> ** Cover the conditions that WindowExec should spill at least once 



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