agrag.graphdb.errors.GraphStoreDataIntegrityError

Bases: GraphStoreError

A read found the graph store in a state its own invariants forbid.

Raised when persisted data cannot be trusted at face value -- for example a merged_into tombstone chain that cycles, points at a missing node, or runs past its expected bound without reaching a live node. Returning the last-seen data in these cases would let a caller silently act on a tombstone instead of the entity it was absorbed into.