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https://issues.apache.org/jira/browse/SPARK-18338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15645865#comment-15645865
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Apache Spark commented on SPARK-18338:
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User 'liancheng' has created a pull request for this issue:
https://github.com/apache/spark/pull/15802
> ObjectHashAggregateSuite fails under Maven builds
> -------------------------------------------------
>
> Key: SPARK-18338
> URL: https://issues.apache.org/jira/browse/SPARK-18338
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Cheng Lian
> Assignee: Cheng Lian
> Labels: flaky-test
>
> Test case initialization order under Maven and SBT are different. Maven
> always creates instances of all test cases and then run them altogether.
> This fails {{ObjectHashAggregateSuite}} because the randomized test cases
> their registers a temporary Hive function right before creating a test case,
> and can be cleared while initializing other successive test cases.
> In SBT, this is fine since the created test case is executed immediately
> after creating the temporary function.
> To fix this issue, we should put initialization/destruction code into
> {{beforeAll()}} and {{afterAll()}}.
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