From 4c7d852d6f7ed736a131ad29e41f8f97cf22275b Mon Sep 17 00:00:00 2001
From: Arne Juul <arnej@vespa.ai>
Date: Fri, 3 Jan 2025 20:15:11 +0000
Subject: [PATCH] estimate should include docid 0 for consistency

---
 .../searchcore/proton/documentmetastore/lid_allocator.cpp      | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/searchcore/src/vespa/searchcore/proton/documentmetastore/lid_allocator.cpp b/searchcore/src/vespa/searchcore/proton/documentmetastore/lid_allocator.cpp
index aa59fb810dd..72ada251c43 100644
--- a/searchcore/src/vespa/searchcore/proton/documentmetastore/lid_allocator.cpp
+++ b/searchcore/src/vespa/searchcore/proton/documentmetastore/lid_allocator.cpp
@@ -228,7 +228,8 @@ class WhiteListBlueprint : public SimpleLeafBlueprint
           _lock(),
           _matchDataVector()
     {
-        setEstimate(HitEstimate(numActiveLids, false));
+        // account for DocId 0 (considered active for estimation purposes)
+        setEstimate(HitEstimate(numActiveLids + 1, false));
     }
 
     bool isWhiteList() const noexcept final { return true; }