From 4eb220d3abc08fcac3116dcdb7fb028f7126239f Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@scylladb.com>
Date: Wed, 2 Jul 2025 16:43:35 +0300
Subject: [PATCH] service: tablet_allocator: avoid large contiguous vector in
 make_repair_plan()

make_repair_plan() allocates a temporary vector which can grow larger
than our 128k basic allocation unit. Use a chunked vector to avoid
stalls due to large allocations.

Fixes #24713.

Closes scylladb/scylladb#24801

(cherry picked from commit 0138afa63bda5cad16d3cbc77ea1b788cb355b11)

Closes scylladb/scylladb#24902
---
 service/tablet_allocator.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/service/tablet_allocator.cc b/service/tablet_allocator.cc
index 2f4c2454c8..b861c9e58e 100644
--- a/service/tablet_allocator.cc
+++ b/service/tablet_allocator.cc
@@ -842,7 +842,7 @@ public:
             db_clock::duration repair_time_diff;
         };
 
-        std::vector<repair_plan> plans;
+        utils::chunked_vector<repair_plan> plans;
         auto migration_tablet_ids = co_await mplan.get_migration_tablet_ids();
         for (auto&& [table, tmap_] : _tm->tablets().all_tables()) {
             auto& tmap = *tmap_;