{
  "id": "go/grpc-failed-precondition-balancer",
  "signature": "rpc error: code = Unavailable desc = last resolver error: produced zero addresses",
  "signature_zh": "rpc error: code = Unavailable desc = 最后的解析器错误：产生零个地址",
  "regex": "rpc\\ error:\\ code\\ =\\ Unavailable\\ desc\\ =\\ last\\ resolver\\ error:\\ produced\\ zero\\ addresses",
  "domain": "go",
  "category": "network_error",
  "subcategory": null,
  "root_cause": "The name resolver (DNS or custom) returned an empty address list, often due to a headless service with no ready endpoints, or a malformed target URI.",
  "root_cause_type": "generic",
  "root_cause_zh": "名称解析器（DNS 或自定义）返回了空地址列表，通常由于没有就绪端点的无头服务，或格式错误的 target URI。",
  "versions": [
    {
      "version": "1.x",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Bypasses resolution but then dials the literal string as an address, which may not be a valid host:port.",
      "fail_rate": 0.6,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "No addresses means every dial fails; retries never produce an address.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "",
      "success_rate": 0.85,
      "how": "_, addrs, err := net.DefaultResolver.LookupHost(context.Background(), \"myservice.ns.svc.cluster.local\")\nlog.Printf(\"addrs=%v err=%v\", addrs, err)",
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "success_rate": 0.75,
      "how": "conn, err := grpc.NewClient(\"static:///svc\", grpc.WithResolvers(customResolver), grpc.WithTransportCredentials(insecure.NewCredentials()))",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.83,
  "fix_success_rate": 0.8,
  "resolvable": "partial",
  "first_seen": "2024-11-11",
  "last_confirmed": "2025-01-01",
  "last_updated": "2025-01-01",
  "evidence_count": 0,
  "tags": [],
  "locale": "en",
  "aliases": []
}