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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 (asterix_root_metadata))
    • 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, _d/buddy for buddy btree, _i for postings file)

 

Transaction logs


  • txnLogDir (base folder for transaction logs)
    • asterix_transcation_log[1-99] (The logs themselves, there should be one to three of these files).
    • checkpoint_[Unix Timestamp] (Files that denote soft checkpoints) 
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