should this line return a string?

[putcn]

I just found following line is blocking my build, since it's supposed to return a string.

virtual std::string GetReqName() { assert(false); }

https://github.com/PaddlePaddle/Paddle/blob/develop/paddle/operators/detail/grpc_server.cc#L39

[helinwang]

Yes, thanks! This PR fixes it: #7626

I think we should turn on distributed flag on TeamCity, is there any concern (such as longer build speed) for turning it on?

[putcn]

I don't see why we shouldn't.

[Yancey1989]

Yes, it tasks longer time with DWITH_DISTRIBUTE=ON, I add a scheduled job on CI https://paddleci.ngrok.io/viewType.html?buildTypeId=Paddle_DistributedUnitTestNightly , maybe we can concern this job.

[putcn]

I see this job is triggered by schedule, should we make it triggered by change so that build can be verified before it's merged to main branch?
I think it would be more reasonable to add DWITH_DISTRIBUTE=ON to PR_CI, since that's kinda gateway for repo code quality.

[typhoonzero]

This #7605 also fix this.

[typhoonzero]

@putcn @Yancey1989 I think we can turn it on once we have the CI machines upgraded to have more computing power.