amanomer commented on issue #26454: [SPARK-29818][MLLIB] Missing persist on RDD URL: https://github.com/apache/spark/pull/26454#issuecomment-552450738 @srowen There are some JIRA tickets created for unnecessary use of persist and improper persist strategy (like [29844](https://issues.apache.org/jira/browse/SPARK-29844), [29832](https://issues.apache.org/jira/browse/SPARK-29832)). Do we need to handle them in this PR?
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