From 558cb2935edf3c5d5786f686a12ff22429a376ad Mon Sep 17 00:00:00 2001
From: Tor Egge <Tor.Egge@online.no>
Date: Fri, 12 Nov 2021 15:06:35 +0100
Subject: proton::BucketDB uses std::optional. Add needed include.

---
 searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp b/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
index e1b631a2124..c7a3103af22 100644
--- a/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
+++ b/searchcore/src/vespa/searchcore/proton/bucketdb/bucketdb.cpp
@@ -4,6 +4,7 @@
 #include "remove_batch_entry.h"
 #include <cassert>
 #include <algorithm>
+#include <optional>
 
 using document::GlobalId;
 using storage::spi::BucketChecksum;
-- 
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