etcd: increase message and transaction limits for embedded etcd

channeldb/kvdb/etcd/db.go

@@ -180,6 +180,7 @@ func newEtcdBackend(config BackendConfig) (*db, error) {
 		Username:           config.User,
 		Password:           config.Pass,
 		TLS:                tlsConfig,
+		MaxCallSendMsgSize: 16384*1024 - 1,
 	})
 
 	if err != nil {

channeldb/kvdb/etcd/embed.go

@@ -42,7 +42,8 @@ func NewEmbeddedEtcdInstance(path string) (*BackendConfig, func(), error) {
 	cfg.Dir = path
 
 	// To ensure that we can submit large transactions.
-	cfg.MaxTxnOps = 1000
+	cfg.MaxTxnOps = 8192
+	cfg.MaxRequestBytes = 16384 * 1024
 
 	// Listen on random free ports.
 	clientURL := fmt.Sprintf("127.0.0.1:%d", getFreePort())