mongodb protocol_error ai_generated true

MongoServerError: change stream resume token invalid for namespace 'mydb.mycoll': token belongs to different database

ID: mongodb/change-stream-resume-token-invalid-namespace

Also available as: JSON · Markdown · 中文

87%Fix Rate

89%Confidence

1Evidence

2023-09-28First Seen

Root Cause

The resume token provided to open a change stream was generated from a different database or collection than the one being watched, causing a namespace mismatch.

generic

中文

提供的恢复令牌用于打开变更流，但该令牌来自与被监视的数据库或集合不同的命名空间，导致命名空间不匹配。

Official Documentation

https://www.mongodb.com/docs/manual/changeStreams/#resume-a-change-stream

Workarounds

85% success Open a new change stream without a resume token (e.g., db.collection.watch([], {startAtOperationTime: Timestamp(1, 1)})) to start from the earliest possible point, then capture a fresh token for future resumption.
```
Open a new change stream without a resume token (e.g., db.collection.watch([], {startAtOperationTime: Timestamp(1, 1)})) to start from the earliest possible point, then capture a fresh token for future resumption.
```
90% success If the token is from a different namespace, construct a new change stream on the correct namespace using db.collection.watch() and ignore the old token. Example in Node.js: const changeStream = collection.watch(); changeStream.on('change', (change) => { console.log(change._id); });
```
If the token is from a different namespace, construct a new change stream on the correct namespace using db.collection.watch() and ignore the old token. Example in Node.js: const changeStream = collection.watch(); changeStream.on('change', (change) => { console.log(change._id); });
```

中文步骤

Open a new change stream without a resume token (e.g., db.collection.watch([], {startAtOperationTime: Timestamp(1, 1)})) to start from the earliest possible point, then capture a fresh token for future resumption.

If the token is from a different namespace, construct a new change stream on the correct namespace using db.collection.watch() and ignore the old token. Example in Node.js: const changeStream = collection.watch(); changeStream.on('change', (change) => { console.log(change._id); });

Dead Ends

Common approaches that don't work:

90% fail
Reusing a resume token from a different replica set or sharded cluster (e.g., from production in a test environment) still fails because the token is cluster-specific.
95% fail
Manually editing the resume token's namespace field in the application code does not work because the server validates the token against internal metadata.