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Posted to issues@spark.apache.org by "Weichen Xu (Jira)" <ji...@apache.org> on 2022/04/28 14:23:00 UTC

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

Weichen Xu created SPARK-39058:
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             Summary: 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


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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