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Posted to issues@spark.apache.org by "Tathagata Das (JIRA)" <ji...@apache.org> on 2016/12/15 19:55:58 UTC

[jira] [Resolved] (SPARK-18870) Distinct aggregates give incorrect answers on streaming dataframes

     [ https://issues.apache.org/jira/browse/SPARK-18870?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tathagata Das resolved SPARK-18870.
-----------------------------------
       Resolution: Fixed
    Fix Version/s: 2.1.0

Issue resolved by pull request 16289
[https://github.com/apache/spark/pull/16289]

> Distinct aggregates give incorrect answers on streaming dataframes
> ------------------------------------------------------------------
>
>                 Key: SPARK-18870
>                 URL: https://issues.apache.org/jira/browse/SPARK-18870
>             Project: Spark
>          Issue Type: Bug
>          Components: Structured Streaming
>    Affects Versions: 2.0.2
>            Reporter: Tathagata Das
>            Assignee: Tathagata Das
>            Priority: Blocker
>             Fix For: 2.1.0
>
>
> Unsupported operations checking dont check whether AggregationExpression have isDistinct=true. So `streamingDf.groupBy().agg(countDistinct("key")) ` gives incorrect results.



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