diff --git a/db/db_impl.cc b/db/db_impl.cc
index 5526b7261686c7b1ebe78acaa502645be0338a76..75cc1b060c6d553ffbee3898301953450ae7e93e 100644
--- a/db/db_impl.cc
+++ b/db/db_impl.cc
@@ -807,7 +807,8 @@ void DBImpl::ScheduleGCTTL() {
   ROCKS_LOG_INFO(immutable_db_options_.info_log, "marked for compact SST: %d,%d",
                  marked_count,mark_count);
   if (mark_count > 0) {
-//    MaybeScheduleFlushOrCompaction();
+    InstrumentedMutexLock l(&mutex_);
+    MaybeScheduleFlushOrCompaction();
   }
 }
 void DBImpl::DumpStats() {
diff --git a/db/db_impl_gc_ttl_test.cc b/db/db_impl_gc_ttl_test.cc
index 2ff60738ee2631eb1b917dd8890478eeb3b82b6e..e3cfc1002910e4fa803023317f424b206e28f488 100644
--- a/db/db_impl_gc_ttl_test.cc
+++ b/db/db_impl_gc_ttl_test.cc
@@ -72,6 +72,7 @@ TEST_F(DBImplGCTTL_Test, L0FileExpiredTest) {
   dbfull()->TEST_WaitForTimedTaskRun([&] { mock_env->set_current_time(ttl); });
   ASSERT_TRUE(flag);
   ASSERT_EQ(L0FilesNums,mark);
+  dbfull()->TEST_WaitForCompact();
 
 
 }