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    Type:
Task
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    Resolution: Fixed
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    Priority:
Major - P3
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    Affects Version/s: None
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    Component/s: None
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    None
 
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        Catalog and Routing
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        Fully Compatible
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        CAR Team 2025-08-18, CAR Team 2025-09-01
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        🟥 DDL, 🟦 Shard Catalog, 🟩 Routing and Topology
 
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        None
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        None
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This ticket aims to review the remaining files under src/mongo/db/s and src/mongo/s after the initial pass in SERVER-109078, to ensure we haven't missed any files owned by Catalog and Routing team.
The majority of the files should be organized by components as follows:
src/mongo/db/
    local_catalog/                        CAR Shard Catalog
        lock_manager/                     CAR Shard Catalog
        shard_role_api/                   CAR Shard Catalog
        shard_role_catalog/               CAR Shard Catalog
        ddl/                              CAR Shard Catalog, CAR DDL
    global_catalog/                       CAR DDL, CAR Routing and Topology
        metadata_consistency_validation/  CAR DDL
        router_role_api/                  CAR Routing and Topology
        catalog_cache/                    CAR Routing and Topology
        ddl/                              CAR Shard Catalog, CAR DDL
    user_write_block/                     CAR Shard Catalog, CAR DDL
    cluster_parameters/                   CAR Routing and Topology
    topology/                             CAR Routing and Topology
    vector_clock/                         CAR Routing and Topology
    sharding_environment/                 CAR (shared files; mainly CAR Routing and Topology)
- is depended on by
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SERVER-109216 Simplify code paths in all CAR modules (modules.yaml) in favor of the new subfolder hierarchy
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 - Closed
 
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- is related to
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SERVER-109078 Initial pass at restructuring CAR components into a new subfolder hierarchy under src/mongo/db
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 - Closed
 
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