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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/12/01 07:26:11 UTC
[jira] [Assigned] (SPARK-12068) use a single column in
Dataset.groupBy and count will fail
[ 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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