Github user mateiz commented on a diff in the pull request:
https://github.com/apache/spark/pull/1418#discussion_r15436168
--- Diff:
examples/src/main/scala/org/apache/spark/examples/SparkPageRank.scala ---
@@ -51,6 +55,11 @@ object SparkPageRank {
urls.map(url => (url, rank / size))
}
ranks = contribs.reduceByKey(_ + _).mapValues(0.15 + 0.85 * _)
+ if (i % 50 == 0) {
+ ranks.cache()
+ ranks.checkpoint()
+ ranks.collect()
--- End diff --
Don't do a collect, if you want to force it to be computed, just do a
`foreach`. Otherwise `collect` will try to bring all the data back to the
driver.
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