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https://issues.apache.org/jira/browse/SPARK-8972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14621929#comment-14621929
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Apache Spark commented on SPARK-8972:
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User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/7343
> Incorrect result for rollup
> ---------------------------
>
> Key: SPARK-8972
> URL: https://issues.apache.org/jira/browse/SPARK-8972
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Cheng Hao
> Priority: Critical
>
> {code:java}
> import sqlContext.implicits._
> case class KeyValue(key: Int, value: String)
> val df = sc.parallelize(1 to 5).map(i=>KeyValue(i, i.toString)).toDF
> df.registerTempTable("foo")
> sqlContext.sql("select count(*) as cnt, key % 100,GROUPING__ID from foo group
> by key%100 with rollup").show(100)
> // output
> +---+---+------------+
> |cnt|_c1|GROUPING__ID|
> +---+---+------------+
> | 1| 4| 0|
> | 1| 4| 1|
> | 1| 5| 0|
> | 1| 5| 1|
> | 1| 1| 0|
> | 1| 1| 1|
> | 1| 2| 0|
> | 1| 2| 1|
> | 1| 3| 0|
> | 1| 3| 1|
> +---+---+------------+
> {code}
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