{
  "id": "database/mongodb-write-concern-timeout",
  "signature": "MongoServerError: WriteConcernError: Not enough data-bearing nodes",
  "signature_zh": "MongoDB 服务器错误：写入关注错误：数据承载节点不足",
  "regex": "MongoServerError: WriteConcernError: Not enough data-bearing nodes",
  "domain": "database",
  "category": "runtime_error",
  "subcategory": null,
  "root_cause": "MongoDB 副本集在满足写入关注（write concern）时，由于多数节点不可用或数据不同步，导致写入操作超时。",
  "root_cause_type": "generic",
  "root_cause_zh": "MongoDB 副本集在满足写入关注（write concern）时，由于多数节点不可用或数据不同步，导致写入操作超时。",
  "versions": [
    {
      "version": "MongoDB 4.4.18",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "MongoDB 5.0.14",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "MongoDB 6.0.5",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "增加副本集节点数而不确保同步状态，可能仍然无法满足写入关注。",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "降低写入关注级别为 w:1 可能导致数据丢失风险，且不解决根本问题。",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "检查副本集状态：rs.status()，确认所有节点处于 PRIMARY 或 SECONDARY 状态。如果节点卡在 RECOVERING，可能需要重新同步。",
      "success_rate": 0.78,
      "how": "检查副本集状态：rs.status()，确认所有节点处于 PRIMARY 或 SECONDARY 状态。如果节点卡在 RECOVERING，可能需要重新同步。",
      "condition": "",
      "sources": []
    },
    {
      "action": "临时降低写入关注级别：db.collection.insertOne({data: 'test'}, {writeConcern: {w: 1}}); 然后修复副本集同步问题。",
      "success_rate": 0.65,
      "how": "临时降低写入关注级别：db.collection.insertOne({data: 'test'}, {writeConcern: {w: 1}}); 然后修复副本集同步问题。",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "检查副本集状态：rs.status()，确认所有节点处于 PRIMARY 或 SECONDARY 状态。如果节点卡在 RECOVERING，可能需要重新同步。",
    "临时降低写入关注级别：db.collection.insertOne({data: 'test'}, {writeConcern: {w: 1}}); 然后修复副本集同步问题。"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.mongodb.com/docs/manual/reference/write-concern/",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.82,
  "fix_success_rate": 0.78,
  "resolvable": "true",
  "first_seen": "2024-02-10",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}