{"id":"1df4902415235257","repo":"go-redis/redis","slug":"redis-got-d-elements-in-the-map-wanted-d","errorCode":null,"errorMessage":"redis: got %d elements in the map, wanted %d","messagePattern":"redis: got (.+?) elements in the map, wanted (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/proto/reader.go","lineNumber":742,"sourceCode":"\tif err != nil {\n\t\treturn 0, err\n\t}\n\tswitch line[0] {\n\tcase RespArray, RespSet, RespPush:\n\t\treturn replyLen(line)\n\tdefault:\n\t\treturn 0, fmt.Errorf(\"redis: can't parse array/set/push reply: %.100q\", line)\n\t}\n}\n\n// ReadFixedMapLen reads fixed map length.\nfunc (r *Reader) ReadFixedMapLen(fixedLen int) error {\n\tn, err := r.ReadMapLen()\n\tif err != nil {\n\t\treturn err\n\t}\n\tif n != fixedLen {\n\t\treturn fmt.Errorf(\"redis: got %d elements in the map, wanted %d\", n, fixedLen)\n\t}\n\treturn nil\n}\n\n// ReadMapLen reads the length of the map type.\n// If responding to the array type (RespArray/RespSet/RespPush),\n// it must be a multiple of 2 and return n/2.\n// Other types will return an error.\nfunc (r *Reader) ReadMapLen() (int, error) {\n\tline, err := r.ReadLine()\n\tif err != nil {\n\t\treturn 0, err\n\t}\n\tswitch line[0] {\n\tcase RespMap:\n\t\treturn replyLen(line)\n\tcase RespArray, RespSet, RespPush:\n\t\t// Some commands and RESP2 protocol may respond to array types.","sourceCodeStart":724,"sourceCodeEnd":760,"githubUrl":"https://github.com/go-redis/redis/blob/36d97525cd8076aed67cddf54778e9ea84550929/internal/proto/reader.go#L724-L760","documentation":"Error \"redis: got %d elements in the map, wanted %d\" thrown in go-redis/redis.","triggerScenarios":"Thrown at internal/proto/reader.go:742 when the library encounters an invalid state.","commonSituations":"Validate map element counts before iterating key/value pairs.","solutions":["Verify the map reply has the expected number of elements; reconnect on desync","Parse with the generic reader if the shape varies"],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"analyzedSha":"36d97525cd8076aed67cddf54778e9ea84550929","analyzedAt":"2026-08-06T01:08:27.376Z","schemaVersion":2}