{"record":{"id":"990ff12928fae9b3","repo":"lionsoul2014/ip2region","slug":"failed-to-load-vector-index-from-s-w","errorCode":null,"errorMessage":"failed to load vector index from `%s`: %w","messagePattern":"failed to load vector index from `(.+?)`: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"binding/golang/main.go","lineNumber":108,"sourceCode":"\n\t// auto-detect the ip version from the xdb header\n\theader, err := xdb.LoadHeader(handle)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to load header from `%s`: %s\", dbPath, err)\n\t}\n\n\tversion, err := xdb.VersionFromHeader(header)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to detect IP version from `%s`: %s\", dbPath, err)\n\t}\n\n\tswitch cachePolicy {\n\tcase \"nil\", \"file\":\n\t\treturn xdb.NewWithFileOnly(version, dbPath)\n\tcase \"vectorIndex\":\n\t\tvIndex, err := xdb.LoadVectorIndexFromFile(dbPath)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"failed to load vector index from `%s`: %w\", dbPath, err)\n\t\t}\n\n\t\treturn xdb.NewWithVectorIndex(version, dbPath, vIndex)\n\tcase \"content\":\n\t\tcBuff, err := xdb.LoadContentFromFile(dbPath)\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"failed to load content from '%s': %w\", dbPath, err)\n\t\t}\n\n\t\treturn xdb.NewWithBuffer(version, cBuff)\n\tdefault:\n\t\treturn nil, fmt.Errorf(\"invalid cache policy `%s`, options: file/vectorIndex/content\", cachePolicy)\n\t}\n}\n\nfunc printHelp() {\n\tfmt.Printf(\"ip2region xdb searcher\\n\")\n\tfmt.Printf(\"%s [command] [command options]\\n\", os.Args[0])","sourceCodeStart":90,"sourceCodeEnd":126,"githubUrl":"https://github.com/lionsoul2014/ip2region/blob/c1a1fc7d5941760db3f8431dc05c48cf7f0e30a1/binding/golang/main.go#L90-L126","documentation":"Go CLI helper: xdb.LoadVectorIndexFromFile failed while reading the fixed-size vector index block from the xdb for the vectorIndex cache policy; the wrapped error is typically a short read or I/O failure.","triggerScenarios":"Thrown at binding/golang/main.go:108 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Verify the xdb file is complete and not truncated","Fall back to the 'file' cache policy which needs no preloaded index","Fix underlying disk/permission problems on the db file"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"c1a1fc7d5941760db3f8431dc05c48cf7f0e30a1","analyzedAt":"2026-09-02T16:58:39.988Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-09T21:17:11.164Z"}