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https://issues.apache.org/jira/browse/SPARK-14662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15242952#comment-15242952
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Apache Spark commented on SPARK-14662:
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User 'shkdee' has created a pull request for this issue:
https://github.com/apache/spark/pull/12415
> LinearRegressionModel uses only default parameters if yStd is 0
> ---------------------------------------------------------------
>
> Key: SPARK-14662
> URL: https://issues.apache.org/jira/browse/SPARK-14662
> Project: Spark
> Issue Type: Bug
> Components: ML
> Reporter: Louis Traynard
> Priority: Minor
> Original Estimate: 5m
> Remaining Estimate: 5m
>
> In the (rare) case when yStd is 0 in LinearRegression, parameters are not
> copied immediately to the created LinearRegressionModel instance. But they
> should (as in all other cases), because currently only the default column
> names are used in and returned by model.findSummaryModelAndPredictionCol(),
> which leads to schema validation errors.
> The fix is two lines and should not be hard to check & apply.
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