title: Indexing and partitioning Parquet in S3
body: <p>Is it possible to both index and partition a Parquet file in S3 or is this functionality only available on File Storage types of volumes?</p>
  <p>I'm looking for a way to provide researchers to access the same data in S3 via EMR notebooks for (a) generic R and Python scripts, and (b) Spark-enabled querying. But the proprietary solution and query language we have right now provides indexing and partitioning on an NFS store - so I want to preserve this functionality. I see that Delta Lake provides this, but I'm wondering if this can be achieved with simpler tools like Arrow.</p>