Bump to grpcio 0.5.1.

[stuhood]

Problem

#9395 occurs within our grpcio dependency, which is quite stale. Although #9395 is more likely to be related to changes in our executor (#9071) or to our transitive rust dependencies (#9122), getting on a more recent version of the grpcio crate might resolve the issue, or make it easier to report an issue.

Solution

Bump to 0.5.1 with one patch (tikv/grpc-rs#457) pulled forward from our previous fork.

[ci skip-jvm-tests] # No JVM changes made.

[Eric-Arellano]

Good thinking!

[stuhood]

This is reviewable.

[Eric-Arellano]

Fingers crossed that this fixes things

[illicitonion]

I think this dropped pantsbuild/grpc-rs@d106c61 which was fixing a fairly frequent flake we were seeing when getting cache hits - was that intentional?

[stuhood]

I think this dropped pantsbuild/grpc-rs@d106c61 which was fixing a fairly frequent flake we were seeing when getting cache hits - was that intentional?

It was "somewhat intentional", in that we jumped two years ahead upstream, and I was willing to gamble that the implementation had changed enough that it was no longer necessary. But I did not confirm that it was not necessary.

If you have a pointer to the pants PR that incorporated that change (in case it has more info on how its absence would exhibit at a high level in pants), that would be helpful? That way we can watch out for that symptom in the future.

[illicitonion]

#6344 was the original PR - 🤞