[jira] [Created] (SPARK-16835) LinearRegression LogisticRegression AFTSuvivalRegression should unpersist input training data when exception throws

["Weichen Xu (JIRA)" <ji...@apache.org>]

Weichen Xu created SPARK-16835:
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             Summary: LinearRegression LogisticRegression AFTSuvivalRegression should unpersist input training data when exception throws
                 Key: SPARK-16835
                 URL: https://issues.apache.org/jira/browse/SPARK-16835
             Project: Spark
          Issue Type: Bug
          Components: ML
            Reporter: Weichen Xu


Currently, 
LinearRegression LogisticRegression AFTSuvivalRegression' s `fit` interface will persist the `dataframe` passed in if it is not persisted.
but when possible exception throws, it won't be unpersist.

As `fit` is a public interface, it is better to unpersist the parameter object passed in in any case, if it do `persist` internally.



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