remove some typo

db/db_impl.cc

@@ -960,7 +960,6 @@ void DBImpl::ScheduleGCTTL() {
   }
 }
 void DBImpl::DumpStats() {
-  ScheduleGCTTL();
   TEST_SYNC_POINT("DBImpl::DumpStats:1");
 #ifndef ROCKSDB_LITE
   const DBPropertyInfo* cf_property_info =

db/db_impl_gc_ttl_test.cc

@@ -24,7 +24,6 @@ class DBImplGCTTL_Test : public DBTestBase {
     options.ttl_scan_gap = 10;
     options.ttl_extractor_factory.reset(new test::TestTtlExtractorFactory());
     options.level0_file_num_compaction_trigger = 8;
-    options.stats_dump_period_sec = 10;
     options.table_factory.reset(
         new BlockBasedTableFactory(BlockBasedTableOptions()));
   }
@@ -79,7 +78,6 @@ TEST_F(DBImplGCTTL_Test, L0FileExpiredTest) {
     dbfull()->Flush(FlushOptions());
   }
   //  dbfull()->StartPeriodicWorkScheduler();
-  ASSERT_EQ(10, dbfull()->GetDBOptions().stats_dump_period_sec);
   dbfull()->TEST_WaitForStatsDumpRun([&] { mock_env_->set_current_time(ttl); });
   ASSERT_TRUE(flag);
   ASSERT_EQ(L0FilesNums, mark);

db/db_sst_test.cc

@@ -179,7 +179,7 @@ TEST_F(DBSSTTest, DeleteObsoleteFilesPendingOutputs) {
   options.level0_file_num_compaction_trigger =
       2;  // trigger compaction when we have 2 files
   options.max_background_flushes = 2;
-  options.max_background_compactions = 2;RateLimitedDelete
+  options.max_background_compactions = 2;
   options.enable_lazy_compaction = false;
   options.blob_size = -1;
   

db/periodic_work_scheduler.cc

@@ -39,12 +39,18 @@ void PeriodicWorkScheduler::Register(DBImpl* dbi,
              initial_delay.fetch_add(1) % kDefaultFlushInfoLogPeriodSec *
                  kMicrosInSecond,
              kDefaultFlushInfoLogPeriodSec * kMicrosInSecond);
+  timer->Add([dbi]() { dbi->ScheduleGCTTL(); },
+             GetTaskName(dbi, "schedule_gc_ttl"),
+             initial_delay.fetch_add(1) % kDefaultScheduleGCTTLPeriodSec *
+             kMicrosInSecond,
+             kDefaultScheduleGCTTLPeriodSec * kMicrosInSecond);
 }
 
 void PeriodicWorkScheduler::Unregister(DBImpl* dbi) {
   timer->Cancel(GetTaskName(dbi, "dump_st"));
   timer->Cancel(GetTaskName(dbi, "pst_st"));
   timer->Cancel(GetTaskName(dbi, "flush_info_log"));
+  timer->Cancel(GetTaskName(dbi, "schedule_gc_ttl"));
   if (!timer->HasPendingTask()) {
     timer->Shutdown();
   }

db/periodic_work_scheduler.h

@@ -39,6 +39,7 @@ class PeriodicWorkScheduler {
   // log messages leading up to the hang will eventually become visible in the
   // log.
   static const uint64_t kDefaultFlushInfoLogPeriodSec = 10;
+  static const uint64_t kDefaultScheduleGCTTLPeriodSec = 10;
 
  protected:
   std::unique_ptr<Timer> timer;