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NamespacePath, TransactionId, LockMode -> LockAcquisition
Serialize concurrent metadata mutations by applying intention and exclusive locks on path nodes inside a hierarchical tree namespace under a transaction context.
Problem it solves
Concurrent operations on a shared hierarchical filesystem or database namespace cause race conditions and directory state corruption.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.