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