Github user ueshin commented on the issue: https://github.com/apache/spark/pull/21427 I guess sending configurations is not that difficult. We can write configs (as `Map[String, String]` for further configurations in the future?) before `PythonUDFRunner.writeUDFs(dataOut, funcs, argOffsets)` in `ArrowPythonRunner.writeCommand()` (and `PythonUDFRunner.writeCommand()`?), and read them before read udfs at `worker.py`. The `timezone` can be included in the configs.
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