highkic opened a new issue, #2082:
URL: https://github.com/apache/brpc/issues/2082
**Describe the bug (描述bug)**
通过brpc_metrics接口获取mbvar 转化来的多lables guage打点，提示type非法
具体的值:
# HELP
lat_rank_score_total_latency{system="unknown",module="unknown",server="rank_server_nbase",status="0"}
# TYPE
lat_rank_score_total_latency{system="unknown",module="unknown",server="rank_server_nbase",status="0"}
gauge
lat_rank_score_total_latency{system="unknown",module="unknown",server="rank_server_nbase",status="0"}
22
**To Reproduce (复现方法)**
typedef bvar::MultiDimension<bvar::LatencyRecorder> MLatencyRecorder;
MLatencyRecorder lat_rank_score_total("lat_rank_score_total", {"system",
"module", "server", "status"});
mbvar_dump=true
mbvar_dump_format= prometheus
打点收集，然后prometheus收集组件通过 http://$ip:$port/brpc_metrics获取打点结果，提示错误
invalid metirc type "system=\"square\" ****** gauge"
**Expected behavior (期望行为)**
能正常收集
**Versions (各种版本)**
OS: linux
Compiler: gcc 7.3.1
brpc: 1月10号版master
protobuf: 3.6.0
**Additional context/screenshots (更多上下文/截图)**
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