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https://issues.apache.org/jira/browse/SPARK-16880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15406156#comment-15406156
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Apache Spark commented on SPARK-16880:
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User 'WeichenXu123' has created a pull request for this issue:
https://github.com/apache/spark/pull/14483
> Improve ANN training, add training data persist if needed
> ---------------------------------------------------------
>
> Key: SPARK-16880
> URL: https://issues.apache.org/jira/browse/SPARK-16880
> Project: Spark
> Issue Type: Bug
> Components: ML, MLlib
> Reporter: Weichen Xu
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> The ANN layer training does not persist input data RDD,
> so that it may cause overhead cost if the RDD need to compute from lineage.
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