zhengruifeng commented on PR #48856:
URL: https://github.com/apache/spark/pull/48856#issuecomment-2481758816
> I think another way of doing this is to maintain a sized dictionary in
Python side, and cache the value retrieved within the Python side.
>
> e.g.,
>
> * spark.get("a")
>
> * look up cacehd["a"] = v
>
> * if not, spark.get("a")
> * spark.set("a", aa")
>
> * empty cache cached["a"]
> * spark.set("a")
>
> and create a dictioanry with TTL and max size
A problem is that `spark.conf` is not the only entry point for config
operations.
Users can also set/unset config by `spark.sql`
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