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Sean Owen resolved SPARK-6665. ------------------------------ Resolution: Won't Fix > Randomly Shuffle an RDD > ------------------------ > > Key: SPARK-6665 > URL: https://issues.apache.org/jira/browse/SPARK-6665 > Project: Spark > Issue Type: New Feature > Components: Spark Shell > Reporter: Florian Verhein > Priority: Minor > > *Use case* > RDD created in a way that has some ordering, but you need to shuffle it > because the ordering would cause problems downstream. E.g. > - will be used to train a ML algorithm that makes stochastic assumptions > (like SGD) > - used as input for cross validation. e.g. after the shuffle, you could just > grab partitions (or part files if saved to hdfs) as folds > Related question in mailing list: > http://apache-spark-user-list.1001560.n3.nabble.com/random-shuffle-streaming-RDDs-td17965.html > *Possible implementation* > As mentioned by [~sowen] in the above thread, could sort by( a good hash of( > the element (or key if it's paired) and a random salt)). -- 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