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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