TThreadedServer mode maybe lock and can't work

Run in TThreadedServer mode
run some times,thrift accept thread lock at onClientConnected and can't work
call stack like this:
Thread 14 (Thread 0x7f79de7e4700 (LWP 2214)):
#0 0x00007f7a1235ffbe in __lll_lock_wait_private () from /lib64/libpthread.so.0
#1 0x00007f7a12359c9a in _L_lock_1834 () from /lib64/libpthread.so.0
#2 0x00007f7a123588ef in pthread_create@@GLIBC_2.2.5 () from /lib64/libpthread.so.0
#3 0x0000000000db139e in apache::thrift::concurrency::PthreadThread::start() ()
#4 0x0000000000dae7f7 in apache::thrift::server::TThreadedServer::onClientConnected(boost::shared_ptr<apache::thrift::server::TConnectedClient> const&) ()
#5 0x0000000000db1eef in apache::thrift::server::TServerFramework::newlyConnectedClient(boost::shared_ptr<apache::thrift::server::TConnectedClient> const&) ()
#6 0x0000000000db27e9 in apache::thrift::server::TServerFramework::serve() ()
#7 0x0000000000daeb77 in apache::thrift::server::TThreadedServer::serve() ()
#8 0x00000000009c279e in CmdServer::run() ()
#9 0x0000000000900a88 in gseThread::run_helper(void*) ()
#10 0x000000000099318c in tos::util_thread_start(void*) ()
#11 0x00007f7a123597f1 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f7a11711ccd in clone () from /lib64/libc.so.6
Thread 13 (Thread 0x7f79ddfe3700 (LWP 2215)):
#0 0x00007f7a1235ffbe in __lll_lock_wait_private () from /lib64/libpthread.so.0
#1 0x00007f7a12359c9a in _L_lock_1834 () from /lib64/libpthread.so.0
#2 0x00007f7a123588ef in pthread_create@@GLIBC_2.2.5 () from /lib64/libpthread.so.0
#3 0x0000000000db139e in apache::thrift::concurrency::PthreadThread::start() ()
#4 0x0000000000dae7f7 in apache::thrift::server::TThreadedServer::onClientConnected(boost::shared_ptr<apache::thrift::server::TConnectedClient> const&) ()
#5 0x0000000000db1eef in apache::thrift::server::TServerFramework::newlyConnectedClient(boost::shared_ptr<apache::thrift::server::TConnectedClient> const&) ()
#6 0x0000000000db27e9 in apache::thrift::server::TServerFramework::serve() ()
#7 0x0000000000daeb77 in apache::thrift::server::TThreadedServer::serve() ()
#8 0x00000000009c2fc3 in CmdServerV2::run() ()
#9 0x0000000000900a88 in gseThread::run_helper(void*) ()
#10 0x000000000099318c in tos::util_thread_start(void*) ()
#11 0x00007f7a123597f1 in start_thread () from /lib64/libpthread.so.0
#12 0x00007f7a11711ccd in clone () from /lib64/libc.so.6