[jira] [Commented] (SPARK-18189) task not serializable with groupByKey() + mapGroups() + map

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-18189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15623869#comment-15623869 ] 

Apache Spark commented on SPARK-18189:
--------------------------------------

User 'seyfe' has created a pull request for this issue:
https://github.com/apache/spark/pull/15706

> task not serializable with groupByKey() + mapGroups() + map
> -----------------------------------------------------------
>
>                 Key: SPARK-18189
>                 URL: https://issues.apache.org/jira/browse/SPARK-18189
>             Project: Spark
>          Issue Type: Bug
>            Reporter: Yang Yang
>
> just run the following code 
> val a = spark.createDataFrame(sc.parallelize(Seq((1,2),(3,4)))).as[(Int,Int)]
> val grouped = a.groupByKey({x:(Int,Int)=>x._1})
> val mappedGroups = grouped.mapGroups((k,x)=>{(k,1)})
> val yyy = sc.broadcast(1)
> val last = mappedGroups.rdd.map(xx=>{
>   val simpley = yyy.value
>   
>   1
> })
> spark says Task not serializable



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