in  ALS, I guess all the iteration’s rdds are referenced by its next iteration’s rdd, so all the shuffle data will not be deleted until the als job finished…

I guess checkpoint could solve my problem, do you know checkpoint?

在 2015年3月3日,下午4:18,nitin [via Apache Spark User List] <[hidden email]> 写道:

Shuffle write will be cleaned if it is not referenced by any object directly/indirectly. There is a garbage collector written inside spark which periodically checks for weak references to RDDs/shuffle write/broadcast and deletes them.

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