lightning: unlimited grpc MaxCallRecvMsgSize for TikvImporter (#56771) (#59569)

close #56114

Author: ti-chi-bot

br/pkg/lightning/backend/local/local.go

@@ -89,7 +89,9 @@ const (
 	// maxWriteAndIngestRetryTimes is the max retry times for write and ingest.
 	// A large retry times is for tolerating tikv cluster failures.
 	maxWriteAndIngestRetryTimes = 30
-	maxRetryBackoffTime         = 30 * time.Second
+	// Unlimited RPC receive message size for TiKV importer
+	unlimitedRPCRecvMsgSize = math.MaxInt32
+	maxRetryBackoffTime     = 30 * time.Second
 
 	gRPCKeepAliveTime    = 10 * time.Minute
 	gRPCKeepAliveTimeout = 5 * time.Minute
@@ -168,6 +170,7 @@ func (f *importClientFactoryImpl) makeConn(ctx context.Context, storeID uint64)
 		ctx,
 		addr,
 		opt,
+		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(unlimitedRPCRecvMsgSize)),
 		grpc.WithConnectParams(grpc.ConnectParams{Backoff: bfConf}),
 		grpc.WithKeepaliveParams(keepalive.ClientParameters{
 			Time:                gRPCKeepAliveTime,