liuxuzxx opened a new issue #3369:
URL: https://github.com/apache/rocketmq/issues/3369
**BUG REPORT**
When I use rocketmq-client-go fetch cluster information ,then i get the json
data is:
```json
{"brokerAddrTable":{"broker_37_master":{"brokerAddrs":{0:"172.16.16.37:10911"},"brokerName":"broker_37_master","cluster":"37_cluster"}},"clusterAddrTable":{"37_cluster":["broker_37_master"]}}
```
then the golang json parse occure error:
```golang
err := json.Unmarshal(response, &temp)
```
and the error information is:
```
invalid character '0' looking for beginning of object key string
```
but JSON key must be string!
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