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https://issues.apache.org/jira/browse/SPARK-6609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14386781#comment-14386781
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Guoqiang Li commented on SPARK-6609:
------------------------------------

We should merge [the PR 5076|https://github.com/apache/spark/pull/5076] to 
branch-1.3?

> explicit checkpoint does not work
> ---------------------------------
>
>                 Key: SPARK-6609
>                 URL: https://issues.apache.org/jira/browse/SPARK-6609
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>    Affects Versions: 1.3.0
>            Reporter: lisendong
>            Priority: Minor
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> https://github.com/apache/spark/blob/db34690466d67f9c8ac6a145fddb5f7ea30a8d8d/mllib/src/main/scala/org/apache/spark/ml/recommendation/ALS.scala
> from the code, I found the explicit feedback ALS does not do "checkpoint()"



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