From acf4e7a8cd8b73e981f456d80a615bc66c2f68ef Mon Sep 17 00:00:00 2001
From: Julie Tibshirani <julie.tibshirani@sourcegraph.com>
Date: Fri, 10 Nov 2023 17:53:24 -0800
Subject: [PATCH] Indexing: properly block on shard building

---
 build/builder.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build/builder.go b/build/builder.go
index a442f57d..455e6f38 100644
--- a/build/builder.go
+++ b/build/builder.go
@@ -854,8 +854,8 @@ func (b *Builder) flush() error {
 
 	if b.opts.Parallelism > 1 && b.opts.MemProfile == "" {
 		b.building.Add(1)
+		b.throttle <- 1
 		go func() {
-			b.throttle <- 1
 			done, err := b.buildShard(todo, shard)
 			<-b.throttle