Weichen Xu created SPARK-16880:
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Summary: 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
Reporter: Weichen Xu
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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