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Sean Owen commented on SPARK-18735:
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Should be because they are used in a computation that produces a
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https://issues.apache.org/jira/browse/SPARK-18735?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15724605#comment-15724605
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Jianfei Wang commented on SPARK-18735:
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oh no,I just see in Kmeans and GaussianMixture they both use