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https://issues.apache.org/jira/browse/SPARK-14440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xusen Yin updated SPARK-14440:
------------------------------
    Description: 
Since the 
PipelineMLWriter/PipelineMLReader/PipelineModelMLWriter/PipelineModelMLReader 
are just extends from JavaMLWriter and JavaMLReader without other modifications 
of attributes and methods, there is no need to keep them, just like what we did 
in the save/load of ml/tuning.py.


  was:
Since the 
PipelineMLWriter/PipelineMLReader/PipelineModelMLWriter/PipelineModelMLReader 
are just extends from JavaMLWriter and JavaMLReader without other modifications 
of attributes and methods, there is no need to keep them, just like what we did 
in 

Remove

* PipelineMLWriter
* PipelineMLReader
* PipelineModelMLWriter
* PipelineModelMLReader

and modify comments.



> Remove PySpark ml.pipeline's specific Reader and Writer
> -------------------------------------------------------
>
>                 Key: SPARK-14440
>                 URL: https://issues.apache.org/jira/browse/SPARK-14440
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML, PySpark
>            Reporter: Xusen Yin
>            Priority: Trivial
>
> Since the 
> PipelineMLWriter/PipelineMLReader/PipelineModelMLWriter/PipelineModelMLReader 
> are just extends from JavaMLWriter and JavaMLReader without other 
> modifications of attributes and methods, there is no need to keep them, just 
> like what we did in the save/load of ml/tuning.py.



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