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      3 __futex_abstimed_wait_common64,__futex_abstimed_wait_common,__GI___futex_abstimed_wait_cancelable64,__pthread_cond_wait_common,___pthread_cond_wait,os_event_struct::wait,os_event_struct::wait_low,os_event_wait_low,srv_worker_thread,std::__invoke_impl<void,,std::__invoke<void,std::_Bind<void,std::_Bind<void,Detached_thread::operator()<void,std::__invoke_impl<void,,std::__invoke<Detached_thread,,std::thread::_Invoker<std::tuple<Detached_thread,,std::thread::_Invoker<std::tuple<Detached_thread,,std::thread::_State_impl<std::thread::_Invoker<std::tuple<Detached_thread,,??,start_thread,clone3
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      1 futex_wait,__GI___lll_lock_wait,lll_mutex_lock_optimized,___pthread_mutex_lock,rocksdb::port::Mutex::Lock,rocksdb::InstrumentedMutex::LockInternal,rocksdb::InstrumentedMutex::Lock,rocksdb::InstrumentedMutexLock::InstrumentedMutexLock,rocksdb::DBImpl::DumpStats,std::function<void,rocksdb::Timer::Run,??,start_thread,clone3
      1 futex_wait,__GI___lll_lock_wait,lll_mutex_lock_optimized,___pthread_mutex_lock,rocksdb::port::Mutex::Lock,rocksdb::InstrumentedMutex::LockInternal,rocksdb::InstrumentedMutex::Lock,rocksdb::FlushJob::WriteLevel0Table,rocksdb::FlushJob::Run,rocksdb::DBImpl::FlushMemTableToOutputFile,rocksdb::DBImpl::FlushMemTablesToOutputFiles,rocksdb::DBImpl::BackgroundFlush,rocksdb::DBImpl::BackgroundCallFlush,std::function<void,rocksdb::ThreadPoolImpl::Impl::BGThread,rocksdb::ThreadPoolImpl::Impl::BGThreadWrapper,??,start_thread,clone3
      1 futex_wait,__GI___lll_lock_wait,lll_mutex_lock_optimized,___pthread_mutex_lock,rocksdb::port::Mutex::Lock,rocksdb::InstrumentedMutex::LockInternal,rocksdb::InstrumentedMutex::Lock,rocksdb::DBImpl::FlushMemTableToOutputFile,rocksdb::DBImpl::FlushMemTablesToOutputFiles,rocksdb::DBImpl::BackgroundFlush,rocksdb::DBImpl::BackgroundCallFlush,std::function<void,rocksdb::ThreadPoolImpl::Impl::BGThread,rocksdb::ThreadPoolImpl::Impl::BGThreadWrapper,??,start_thread,clone3
      1 futex_wait,__GI___lll_lock_wait,lll_mutex_lock_optimized,___pthread_mutex_lock,rocksdb::port::Mutex::Lock,rocksdb::InstrumentedMutex::LockInternal,rocksdb::InstrumentedMutex::Lock,rocksdb::ColumnFamilyData::GetThreadLocalSuperVersion,rocksdb::ColumnFamilyData::GetReferencedSuperVersion,rocksdb::DBImpl::NewIteratorImpl,rocksdb::DBImpl::NewIterator,rocksdb::StackableDB::NewIterator,myrocks::Rdb_dict_manager::new_iterator,myrocks::Rdb_dict_manager::get_ongoing_index_operation,myrocks::Rdb_dict_manager::get_ongoing_drop_indexes,myrocks::Rdb_drop_index_thread::run,myrocks::Rdb_thread::thread_func,pfs_spawn_thread,start_thread,clone3
      1 futex_wait,__GI___lll_lock_wait,___pthread_mutex_lock,native_mutex_lock,my_mutex_lock,inline_mysql_mutex_lock,THD::release_resources,destroy_internal_thd,Auto_THD::~Auto_THD,mysql_audit_notify,mysqld_main,__libc_start_call_main,__libc_start_main_impl,_start
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