Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/668#discussion_r12338655
--- Diff: docs/scala-programming-guide.md ---
@@ -278,10 +278,13 @@ iterative algorithms with Spark and for interactive
use from the interpreter.
You can mark an RDD to be persisted using the `persist()` or `cache()`
methods on it. The first time
it is computed in an action, it will be kept in memory on the nodes. The
cache is fault-tolerant --
--- End diff --
Oh sorry - nevermind, this is explained below and this case only refers to
calling `persist()` without arguments.
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