From 59904be5c38e5447cfdfaaf734c4b3a043b1391c Mon Sep 17 00:00:00 2001
From: "Raphael S. Carvalho" <raphaelsc@scylladb.com>
Date: Tue, 25 Apr 2023 11:14:33 -0300
Subject: [PATCH] table: Avoid reallocations in make_compaction_groups()

Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
---
 replica/table.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/replica/table.cc b/replica/table.cc
index 0482295f62..c2f7d1985d 100644
--- a/replica/table.cc
+++ b/replica/table.cc
@@ -519,6 +519,7 @@ void table::enable_off_strategy_trigger() {
 std::vector<std::unique_ptr<compaction_group>> table::make_compaction_groups() {
     std::vector<std::unique_ptr<compaction_group>> ret;
     auto&& ranges = dht::split_token_range_msb(_x_log2_compaction_groups);
+    ret.reserve(ranges.size());
     tlogger.debug("Created {} compaction groups for {}.{}", ranges.size(), _schema->ks_name(), _schema->cf_name());
     for (auto&& range : ranges) {
         ret.emplace_back(std::make_unique<compaction_group>(*this, std::move(range)));