AsterixDB On-Disk File and Folder structure

This is just listed from outer to inner., the outermost item in the nested list being the first. 

LSM on-disk resources (i.e. AsterixDB native storage)

• IODevice (~= Mount point, contains seralized root recovery metadata object)
  • Partition / partition replicas (i.e. many)
    • Dataverse (e.g. 'Metadata')
      • Index (folder, like 'Metadata_idx_Metadata' for the primary )
        • Index files and serialized recovery metadata ( _b for BTree, _f for Bloom filter, _r for RTree)

Transaction logs

• TBD