https://issues.apache.org/jira/browse/SPARK-5954 is for this issue and
Shuo is working on it. We will first implement topByKey for RDD and
them we could add it to DataFrames. -Xiangrui
On Mon, Mar 9, 2015 at 9:43 PM, Moss rhoud...@gmail.com wrote:
I do have a schemaRDD where I want to group by a given field F1, but want
the result to be not a single row per group but multiple rows per group
where only the rows that have the N top F2 field values are kept.
The issue is that the groupBy operation is an aggregation of multiple rows
to a single one.
Any suggestion or hint will be appreciated.
Best,
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