[jira] [Created] (IGNITE-10297) Investigate possibility of restricting API of Upstream transformer

[Anton Vinogradov (Jira)]

Artem Malykh created IGNITE-10297:
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             Summary: Investigate possibility of restricting API of Upstream transformer
                 Key: IGNITE-10297
                 URL: https://issues.apache.org/jira/browse/IGNITE-10297
             Project: Ignite
          Issue Type: Improvement
          Components: ml
            Reporter: Artem Malykh
            Assignee: Artem Malykh


Signature of 'transform' method of UpstreamTransformer is Stream<UpstreamEntry> -> Stream<UpstreamEntry>. For now it is used only for bagging and for that purpose, UpstreamEntry -> Stream<UpstreamEntry> would suffice (just use 'flatMap' on upstream), maybe we should change signature to this form. From other hand, we'll cut some possibilities like limiting of upstream. This question needs investigation. 



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