[GitHub] [arrow-datafusion] yahoNanJing commented on pull request #2479: Move `data-access` crate into `datafusion` directory

[GitBox <gi...@apache.org>]

yahoNanJing commented on PR #2479:
URL: https://github.com/apache/arrow-datafusion/pull/2479#issuecomment-1120592147

   Hi @andygrove, according to #2076, the reason to move the data-access crate out of the datafusion directory is to make it possible for other crates, like **datafusion-objectstore-s3** and **datafusion-objectstore-hdfs**, to depend on only this crate rather than the whole datafusion crate. Then the datafusion crate may also be able to depend on the object store extensions. 
   
   In summary, the data-access crate should not depend on the datafusion. The dependencies should be like follows:
   ```
   datafusion
        |        \
        |          \
        |            datafusion-objectstore-extensions
        |            /
        |          /
   data-access
   ```
   


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