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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-12068) use a single column in Dataset.groupBy and count will fail
Date Tue, 01 Dec 2015 06:26:11 GMT

     [ https://issues.apache.org/jira/browse/SPARK-12068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-12068:
------------------------------------

    Assignee:     (was: Apache Spark)

> use a single column in Dataset.groupBy and count will fail
> ----------------------------------------------------------
>
>                 Key: SPARK-12068
>                 URL: https://issues.apache.org/jira/browse/SPARK-12068
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>            Reporter: Wenchen Fan
>
> {code}
> val ds = Seq("a" -> 1, "b" -> 1, "a" -> 2).toDS()
> val count = ds.groupBy($"_1").count()
> count.collect() // will fail
> {code}



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