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cluster data collected from production clusters in Alibaba for cluster management research
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Excessive Number of HTTP Interfaces in MSCallgraph for Certain Microservices #201

Closed dufanrong closed 9 months ago

dufanrong commented 9 months ago

While analyzing the MSCallgraph in cluster-trace-microservices-v2022, I've observed an unusually high number of HTTP interfaces for specific microservices, such as MS_31900. The count goes up to tens of thousands. Upon further investigation, I noticed that this phenomenon is limited to interfaces of type HTTP.

timestamp traceid service rpc_id rpctype um uminstanceid interface dm dminstanceid rt
666799790 T_10572747201 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_94 YiSTYTipcG MS_31900 MS_31900_POD_7 1.0
666791503 T_10572545896 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_261 vC8inwuMdi MS_31900 MS_31900_POD_17 0.0
666756726 T_8055188207 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_121 RlE4Pp_ARK MS_31900 MS_31900_POD_27 0.0
666794385 T_24814568720 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_267 GSF0mJiohI MS_31900 MS_31900_POD_14 0.0
666898773 T_8757450109 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_94 n3nUmaP9BK MS_31900 MS_31900_POD_9 1.0
666854154 T_10574242754 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_7 6YFZ5JWAmA MS_31900 MS_31900_POD_13 1.0
666737861 T_14369578268 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_94 lXK57owq2Y MS_31900 MS_31900_POD_16 0.0
666770254 T_23542778248 S_10694245 0.1.1 http MS_68938 MS_68938_POD_261 hYk8H05n1F MS_31900 MS_31900_POD_33 1.0
666741974 T_10147839047 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_59 Id1Y2qlf4L MS_31900 MS_31900_POD_17 0.0
666846054 T_13888771459 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_37 IMl0nT51Fv MS_31900 MS_31900_POD_12 0.0
666880932 T_13890466572 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_196 Hkb641m7S6 MS_31900 MS_31900_POD_4 2.0
666848797 T_23794821828 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_196 jYG4oEF7fj MS_31900 MS_31900_POD_3 1.0
666897101 T_11914288919 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_3 8REByX_Irw MS_31900 MS_31900_POD_31 0.0
666800327 T_11910715102 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_177 _c8x9zOuP2 MS_31900 MS_31900_POD_6 0.0
666751302 T_13207264320 S_10694245 0.1.1.1 http MS_68938 MS_68938_POD_83 o_9Q6QDWIz MS_31900 MS_31900_POD_33 1.0
666871574 T_13207160148 S_10694245 0.1.1 http MS_68938 MS_68938_POD_169 ZkyKcGcJxD MS_31900 MS_31900_POD_26 0.0

In my understanding, each microservice should have a relatively small number of interfaces, rather than several thousand. I am curious to understand why there is such a significant proliferation of HTTP interfaces.

niewuya commented 9 months ago

Thank you for your question. In this scenario, the interface for the HTTP service is related to its arguments, which may result in a single HTTP service having a large number of interfaces, especially when there are multiple arguments.

dufanrong commented 9 months ago

I understand, thank you for your response！