1 files changed, 7 insertions, 0 deletions
diff --git a/src/mongo/util/concurrency/thread_pool.h b/src/mongo/util/concurrency/thread_pool.h
index 29acd9e09c0..1cbd6b8b263 100644
--- a/src/mongo/util/concurrency/thread_pool.h
+++ b/src/mongo/util/concurrency/thread_pool.h
@@ -147,6 +147,11 @@ public:
     // from ThreadPoolInterface
     void startup() override;
     void shutdown() override;
+
+    /**
+     * Joins all scheduled tasks. Can also spawn a free thread that ignores maxThread options to
+     * execute pending tasks.
+     */
     void join() override;
 
     /**
@@ -158,6 +163,8 @@ public:
      *
      * May be called multiple times, by multiple threads. May not be called by a task in the thread
      * pool.
+     *
+     * Not safe to use when shutdown can be called concurrently.
      */
     void waitForIdle();