[ https://issues.apache.org/jira/browse/SPARK-4417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Patrick Wendell resolved SPARK-4417. ------------------------------------ Resolution: Won't Fix Assignee: Ilya Ganelin [~ilganeli] ended up taking a crack a this, but we decided not to include the feature based on follow up discussion in the PR. > New API: sample RDD to fixed number of items > -------------------------------------------- > > Key: SPARK-4417 > URL: https://issues.apache.org/jira/browse/SPARK-4417 > Project: Spark > Issue Type: New Feature > Components: PySpark, Spark Core > Reporter: Davies Liu > Assignee: Ilya Ganelin > > Sometimes, we just want to a fixed number of items randomly selected from an > RDD, for example, before sort an RDD we need to gather a fixed number of keys > from each partitions. > In order to do this, we need to two pass on the RDD, get the total number, > then calculate the right ratio for sampling. In fact, we could do this in one > pass. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org