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https://issues.apache.org/jira/browse/SPARK-2121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-2121.
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Resolution: Not a Problem
> Not fully cached when there is enough memory in ALS
> ---------------------------------------------------
>
> Key: SPARK-2121
> URL: https://issues.apache.org/jira/browse/SPARK-2121
> Project: Spark
> Issue Type: Bug
> Components: Block Manager, MLlib, Spark Core
> Affects Versions: 1.0.0
> Reporter: Shuo Xiang
>
> While factorizing a large matrix using the latest Alternating Least Squares
> (ALS) in mllib, from sparkUI it looks like that spark fail to cache all the
> partitions of some RDD while memory is sufficient. Please find [this
> post](http://apache-spark-user-list.1001560.n3.nabble.com/Not-fully-cached-when-there-is-enough-memory-tt7429.html)
> for screenshots. This may cause subsequent job failures while executing
> `userOut.Count()` or `productsOut.count`.
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