This is likely a horrible forum for discussing a nitty gritty thing, but at broad brush, I've found out via bazel-buildfarm that our client (Pants) will send duplicate blob upload requests concurrently. Which is perfectly fine, but bazel dedups and so we found out about a bug in bazel-buildfarm handling concurrent requests that bazel as a client did not expose: https://github.com/bazelbuild/bazel-buildfarm/issues/339 The bazel-buildfarm people have already offered a patch that fixes things, but I was wondering if this is interesting or known. Posted in #remoting