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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/04/12 07:13:12 UTC

[jira] [Assigned] (SPARK-6293) SQLContext.implicits should provide automatic conversion for RDD[Row]

     [ https://issues.apache.org/jira/browse/SPARK-6293?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-6293:
-----------------------------------

    Assignee: Apache Spark

> SQLContext.implicits should provide automatic conversion for RDD[Row]
> ---------------------------------------------------------------------
>
>                 Key: SPARK-6293
>                 URL: https://issues.apache.org/jira/browse/SPARK-6293
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 1.3.0
>            Reporter: Joseph K. Bradley
>            Assignee: Apache Spark
>
> When a DataFrame is converted to an RDD[Row], it should be easier to convert it back to a DataFrame via toDF.  E.g.:
> {code}
> val df: DataFrame = myRDD.toDF("col1", "col2")  // This works for types like RDD[scala.Tuple2[...]]
> val splits = df.rdd.randomSplit(...)
> val split0: RDD[Row] = splits(0)
> val df0 = split0.toDF("col1", "col2") // This fails
> {code}
> The failure happens because SQLContext.implicits does not provide an automatic conversion for Rows.  (It does handle Products, but Row does not implement Product.)



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