srowen commented on a change in pull request #24531: [SPARK-27636][MLLIB]Remove cached RDD blocks after PIC execution URL: https://github.com/apache/spark/pull/24531#discussion_r281042435
########## File path: mllib/src/main/scala/org/apache/spark/mllib/clustering/PowerIterationClustering.scala ########## @@ -417,6 +435,17 @@ object PowerIterationClustering extends Logging { .setK(k) .setSeed(0L) .run(points.values) - points.mapValues(p => model.predict(p)).cache() + + val predict = points.mapValues(p => model.predict(p)).cache() + predict.count() + points.unpersist() + predict Review comment: Why not just not cache `predict` here? that avoids dealing with unpersisting in the single caller above. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org