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https://issues.apache.org/jira/browse/SPARK-20677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16002297#comment-16002297
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Apache Spark commented on SPARK-20677:
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User 'MLnick' has created a pull request for this issue:
https://github.com/apache/spark/pull/17919
> Clean up ALS recommend all improvement code.
> ---------------------------------------------
>
> Key: SPARK-20677
> URL: https://issues.apache.org/jira/browse/SPARK-20677
> Project: Spark
> Issue Type: Improvement
> Components: ML, MLlib
> Affects Versions: 2.2.0
> Reporter: Nick Pentreath
> Assignee: Nick Pentreath
> Priority: Minor
>
> SPARK-11968 and SPARK-20587 added performance improvements to the "recommend
> all" methods of {{ALS}}. This JIRA tracks a few clean ups as follow up:
> # Force use F2jBLAS {{dot}} instead of the hand-written version
> # (Potentially) clean up iterator code for priority queue
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