[GitHub] [arrow-rs] yahoNanJing commented on pull request #3839: Add as_any() to the ObjectStore to make it able to identify which ObjectStore is using for the related trait object

["yahoNanJing (via GitHub)" <gi...@apache.org>]

yahoNanJing commented on PR #3839:
URL: https://github.com/apache/arrow-rs/pull/3839#issuecomment-1465404294

   Thanks @alamb and @tustvold for reviewing this. The main reason for adding `as_any` is to identify different cache path for the corresponding `ObjectStore`. For example, in the https://github.com/apache/arrow-ballista/issues/645, we will introduce a cache layer with a root cache directory. The cache layer will be able to cache data from different `ObjectStore`s. Suppose `ObjectStore` A has a path `p`, while `ObjectStore` B has the same path `p`. Then how to cache them both becomes a problem if we are not able to identify different `ObjectStore`s.


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