From aa7b849e758caaefc59dfd59ff575e4886ba8e5e Mon Sep 17 00:00:00 2001
From: Ned Andreev <n@andreev.sh>
Date: Wed, 11 Dec 2024 15:14:47 +0200
Subject: [PATCH] fix: data race in bloombuild tests (#15360)

---
 pkg/bloombuild/planner/planner_test.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkg/bloombuild/planner/planner_test.go b/pkg/bloombuild/planner/planner_test.go
index 656a0b533c3c2..75d41027dd562 100644
--- a/pkg/bloombuild/planner/planner_test.go
+++ b/pkg/bloombuild/planner/planner_test.go
@@ -713,7 +713,10 @@ func (f *fakeBuilder) Send(req *protos.PlannerToBuilder) error {
 }
 
 func (f *fakeBuilder) Recv() (*protos.BuilderToPlanner, error) {
-	if len(f.tasks) == 0 {
+	f.mx.Lock()
+	tasksLen := len(f.tasks)
+	f.mx.Unlock()
+	if tasksLen == 0 {
 		// First call to Recv answers with builderID
 		return &protos.BuilderToPlanner{
 			BuilderID: f.id,