From ff9ad9a4febfb552ffcf86959f54d7f183febb4b Mon Sep 17 00:00:00 2001
From: Matt Jaffee <matthew.jaffee@gmail.com>
Date: Sun, 12 Jan 2020 11:15:58 -0600
Subject: [PATCH] mutex field data type should be string not []string

---
 server/grpc.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/server/grpc.go b/server/grpc.go
index 60e7dcc29..78f9b87f6 100644
--- a/server/grpc.go
+++ b/server/grpc.go
@@ -80,11 +80,16 @@ func (h grpcHandler) QueryPQL(req *pb.QueryPQLRequest, stream pb.Pilosa_QueryPQL
 // uint64, bool, etc.) based on the Pilosa field type.
 func fieldDataType(f *pilosa.Field) string {
 	switch f.Type() {
-	case "set", "mutex":
+	case "set":
 		if f.Keys() {
 			return "[]string"
 		}
 		return "[]uint64"
+	case "mutex":
+		if f.Keys() {
+			return "string"
+		}
+		return "uint64"
 	case "int":
 		if f.Keys() {
 			return "string"