SERVER-76983 Shutdown and join the CatalogCached's thread pool when mongos terminates

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mongo/s/mongos_main.cpp b/src/mongo/s/mongos_main.cpp
index 4e8f3f329a9..8f0a4f7758b 100644
--- a/src/mongo/s/mongos_main.cpp
+++ b/src/mongo/s/mongos_main.cpp
@@ -366,6 +366,7 @@ void cleanupTask(const ShutdownTaskArgs& shutdownArgs) {
         }
 
         if (auto pool = Grid::get(opCtx)->getExecutorPool()) {
+            LOGV2_OPTIONS(7698300, {LogComponent::kSharding}, "Shutting down the ExecutorPool");
             pool->shutdownAndJoin();
         }
 
@@ -374,6 +375,13 @@ void cleanupTask(const ShutdownTaskArgs& shutdownArgs) {
         }
 
         if (Grid::get(serviceContext)->isShardingInitialized()) {
+            // The CatalogCache must be shuted down before shutting down the CatalogCacheLoader as
+            // the CatalogCache may try to schedule work on CatalogCacheLoader and fail.
+            LOGV2_OPTIONS(7698301, {LogComponent::kSharding}, "Shutting down the CatalogCache");
+            Grid::get(serviceContext)->catalogCache()->shutDownAndJoin();
+
+            LOGV2_OPTIONS(
+                7698302, {LogComponent::kSharding}, "Shutting down the CatalogCacheLoader");
             CatalogCacheLoader::get(serviceContext).shutDown();
         }