clientv3: document client-side request size limit
@@ -80,6 +80,10 @@ The etcd client optionally exposes RPC metrics through [go-grpc-prometheus](http
The [namespace](https://godoc.org/github.com/coreos/etcd/clientv3/namespace) package provides `clientv3` interface wrappers to transparently isolate client requests to a user-defined prefix.
+## Request size limit
+
+Client request size limit is configurable via `clientv3.Config.MaxCallSendMsgSize` and `MaxCallRecvMsgSize` in bytes. If none given, client request send limit defaults to 2 MiB including gRPC overhead bytes. And receive limit defaults to `math.MaxInt32`.
+
## Examples
More code examples can be found at [GoDoc](https://godoc.org/github.com/coreos/etcd/clientv3).
