[jira] [Commented] (SPARK-39058) Add `getInputSignature` and `getOutputSignature` APIs for spark ML models/transformers

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

    [ https://issues.apache.org/jira/browse/SPARK-39058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17529462#comment-17529462 ] 

Weichen Xu commented on SPARK-39058:
------------------------------------

CC [~ruifengz] Are you interested in contributing this feature ? :)

> Add `getInputSignature` and `getOutputSignature` APIs for spark ML models/transformers
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-39058
>                 URL: https://issues.apache.org/jira/browse/SPARK-39058
>             Project: Spark
>          Issue Type: New Feature
>          Components: ML
>    Affects Versions: 3.4.0
>            Reporter: Weichen Xu
>            Priority: Major
>
> Add `getInputSignature` and `getOutputSignature` APIs for spark ML models/transformers:
> The `getInputSignature` API return a list of column name and type which represent the ML model / transformer's input columns.
> The `getOutputSignature` API return a list of column column name and type which represent the ML model / transformer's output columns.
> These 2 APIs are useful to in third-party library such as mlflow, which requires the information of input / output signature of the Model.



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