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https://issues.apache.org/jira/browse/SPARK-22224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-22224.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.3.0
Issue resolved by pull request 19363
[https://github.com/apache/spark/pull/19363]
> Override toString of KeyValueGroupedDataset & RelationalGroupedDataset
> -----------------------------------------------------------------------
>
> Key: SPARK-22224
> URL: https://issues.apache.org/jira/browse/SPARK-22224
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Kent Yao
> Priority: Minor
> Fix For: 2.3.0
>
>
> scala> val words = spark.read.textFile("README.md").flatMap(_.split(" "))
> words: org.apache.spark.sql.Dataset[String] = [value: string]
> scala> val grouped = words.groupByKey(identity)
> grouped: org.apache.spark.sql.KeyValueGroupedDataset[String,String] =
> org.apache.spark.sql.KeyValueGroupedDataset@65214862
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