marin-ma commented on issue #4039: URL: https://github.com/apache/incubator-gluten/issues/4039#issuecomment-2109187441
> I'd like to take a look at `stack` function, it seems like a `Generator`, meaning one row of input might return multiple rows of output, does Velox has this generator ability? @xumingming Currently, 4 generator functions are supported : `explode`, `pos_explode`, 'inline` and `json_tuple`. The approach is creating a `ProjectNode` + `UnnestNode` + `ProjectNode` pattern in Velox pipeline. But seems like the `stack` function cannot use this pattern. Perhaps we can build another pipeline by leveraging the `ExpandNode` in Velox (Not sure if this approach really works). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@gluten.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@gluten.apache.org For additional commands, e-mail: commits-h...@gluten.apache.org
