mongodb runtime_error ai_generated partial

MongoServerError：RollbackDetected：副本集成员 rs1:27017 上发生回滚

MongoServerError: RollbackDetected: rollback occurred on replica set member rs1:27017

ID: mongodb/rollback-detected-on-replica-set

其他格式: JSON · Markdown 中文 · English
80%修复率
86%置信度
1证据数
2024-11-05首次发现

版本兼容性

版本状态引入弃用备注
mongodb-5.0 active — — —
mongodb-6.0 active — — —
mongodb-7.0 active — — —

根因分析

副本集中的从节点发生了回滚，因为它应用了后来被主节点覆盖的写入操作。

English

A secondary node in a replica set experienced a rollback because it applied writes that were later overwritten by the primary.

generic

官方文档

https://www.mongodb.com/docs/manual/core/replica-set-rollbacks/

解决方案

  1. Check the rollback data in the rollback/ directory on the affected node and manually restore any necessary documents using mongorestore.
  2. Ensure all secondary nodes have caught up with the primary by monitoring replication lag and increasing oplog size if needed.
  3. Set writeConcern to majority to reduce the chance of rollbacks by ensuring writes are acknowledged by a majority of nodes.

无效尝试

常见但无效的做法:

  1. 50% 失败

    Ignoring the rollback and continuing operations can cause data inconsistency between nodes.

  2. 50% 失败

    Manually forcing the secondary to become primary without resolving the rollback can cause data loss.

  3. 50% 失败

    Decreasing the oplog size to save disk space increases the likelihood of future rollbacks.