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https://issues.apache.org/jira/browse/SPARK-22795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-22795.
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Resolution: Won't Fix
> Raise error when line search in FirstOrderMinimizer failed
> ----------------------------------------------------------
>
> Key: SPARK-22795
> URL: https://issues.apache.org/jira/browse/SPARK-22795
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Affects Versions: 2.2.1
> Reporter: Shintaro Murakami
> Priority: Minor
>
> When line search in FirstOrderMinimizer (LBFGS or OWLQN so on) failed, the
> fit method of estimator not failed, and a meaning-less transformer is
> returned.
> The error should be discovered early.
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