apache/spark — pull request #1913 by mengxr (2014-08-13 00:51:09+00:00)
Title: [SPARK-2995][MLLIB] add ALS.setIntermediateDataStorageLevel

As mentioned in SPARK-2465, using `MEMORY_AND_DISK_SER` for user/product in/out links together with `spark.rdd.compress=true` can help reduce the space requirement by a lot, at the cost of speed. It might be useful to add this option so people can run ALS on much bigger datasets.