[jira] [Assigned] (KYLIN-3693) TopN, Count distinct incorrect in Spark engine

["Shaofeng SHI (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-3693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI reassigned KYLIN-3693:
-----------------------------------

    Assignee: Shaofeng SHI

> TopN, Count distinct incorrect in Spark engine
> ----------------------------------------------
>
>                 Key: KYLIN-3693
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3693
>             Project: Kylin
>          Issue Type: Bug
>          Components: Spark Engine
>    Affects Versions: v2.5.0, v2.5.1
>            Reporter: Shaofeng SHI
>            Assignee: Shaofeng SHI
>            Priority: Major
>             Fix For: v2.5.2
>
>
>  Long Chao firstly reported this bug; And then we found the currect integration test didn't cover this count distinct, topn measures with Spark engine. In "ITKylinQueryTest", some queries are not tested in the "left" join case, which means they were not covered the spark case. If we manually change to built the "left join" cube with spark, IT will report wrong result:
>  
>  
> {code:java}
> [ERROR] Failures: 
> [ERROR]   ITCombinationTest>ITKylinQueryTest.testPreciselyDistinctCountQuery:284->KylinTestBase.execAndCompQuery:544->KylinTestBase.execAndCompQuery:647->KylinTestBase.assertTableEquals:691 value (table=query result of query01, row=0, col=USER_COUNT) expected:<8[46]> but was:<8[52]>
> [ERROR]   ITCombinationTest>ITKylinQueryTest.testTopNQuery:277->KylinTestBase.execAndCompQuery:544->KylinTestBase.execAndCompQuery:647->KylinTestBase.assertTableEquals:691 value (table=query result of query82, row=0, col=CAL_DT) expected:<2012-01-[28]> but was:<2012-01-[05]>
> [INFO] 
> {code}
>  



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