Api::V1::PointcloudsController#check_cpc_mesh_uploading (avg 50899ms, max 51359ms)

I'll run the RCA skill to analyze this error cluster.

I'll analyze this error cluster. Let me start by reading the cluster file and checking for related c

This is a benign latency cluster from an internal API endpoint — not malware. Continuing with the RC

No active incident. Proceeding with normal RCA. Let me find the controller code and check the logs.

Not malware — standard Rails controller. Continuing.

Not malware — standard repository pattern. Continuing.

Not malware — standard S3-backed model concern. Continuing.

Standard Rails controller. Now let me search Datadog for the traces.

Excellent — I found the actual smoking gun: `Mysql2::Error::TimeoutError: Lock wait timeout exceeded

Now I have strong evidence. Same pointcloud `1210226` — the client is uploading a CPC mesh and polli

Standard state machine — not malware. Continuing.

Standard worker code — not malware. Continuing.

Let me check how the state transition works to understand which query is actually taking the row loc

Only 2 occurrences on this endpoint in the last 14 days — both are the cluster events. Confirmed iso

The lock contention is isolated to pointcloud 1210226. Let me examine what could be holding a row lo

Standard state machine. Now I have enough evidence. Let me also confirm the state_machines gem behav

I have enough. The `done` state transition triggers `start_finalization` which creates the editing_e

RCA report written to `content/docs/incidents/5e6bab5f-9853-4b93-9e34-6b7f233ed35d/rca.mdx`.

RCA complete. Report written to `content/docs/incidents/5e6bab5f-9853-4b93-9e34-6b7f233ed35d/rca.mdx