#Anomly Detection
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This solution has been AI generated
Your anomaly detection job is likely hanging due to an unindexed filter on the updatedAt field. Our FAQ shows the exact MongoDB error: “Path 'updatedAt' needs to be indexed,” which causes very slow/failed aggregations. The quickest fix is to add an index on updatedAt.
Why it’s stuck
- MongoDB aggregation with a
$match(or similar) onupdatedAtrequires an index. Without it, you’ll see long runtimes or the PlanExecutor error from the FAQ.
Quick fix: add the index
// In your collection setup (e.g., similar to examples/copilot-openaI-mongodb-atlas-vector-search)
await collection.createIndex({ updatedAt: 1 });
- Place this during initialization (e.g., in
initializeDataor your API route setup) so it runs once per deployment.
Verify your aggregation uses the index
If your pipeline filters by time, make sure it matches on updatedAt:
const pipeline = [
{ $match: { updatedAt: { $gte: new Date("2025-01-01") } } },
// ...rest of your stages
];
Reference in the codebase
- See the MongoDB example pattern:
examples/copilot-openaI-mongodb-atlas-vector-search/src/app/api/copilotkit/route.tsand add thecreateIndex({ updatedAt: 1 })in the collection initialization.
After adding the index, rerun your anomaly detection. It should execute much faster and avoid the PlanExecutor error.
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