[ https://issues.apache.org/jira/browse/IMPALA-7566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Lars Volker resolved IMPALA-7566. --------------------------------- Resolution: Duplicate Assignee: (was: bharath v) Fix Version/s: Impala 2.11.0 > TAcceptQueueServer connection setup should have timeout > ------------------------------------------------------- > > Key: IMPALA-7566 > URL: https://issues.apache.org/jira/browse/IMPALA-7566 > Project: IMPALA > Issue Type: Improvement > Components: Clients, Distributed Exec > Affects Versions: Impala 2.11.0, Impala 3.0, Impala 2.12.0 > Reporter: Michael Ho > Priority: Blocker > Fix For: Impala 2.11.0 > > > Currently, there is no timeout when establishing a connection with an Impala > client. For instance, if a client freezes whether (intentionally or > unintentionally) in the middle of connection establishment (e.g. > Saslhandshake), the *single thread* in {{connection_setup_pool}} of > {{TAcceptQueueServer}} will be stuck waiting for the client and thus all > other clients trying to connect to Beeswax or HS2 port of Impalad will be > stuck forever. Impala should consider adding a timeout on the socket during > connection establishment phase with a client so as limit the amount of time > the thread can be stuck. > One can try using "{{openssl s_client"}} command to connect to Impalad with > TLS and Kerberos enabled and leave it opened. The thread doing the connection > setup will be stuck in the stack below: > {noformat} > Thread 551 (Thread 0x7fddde563700 (LWP 166354)): > #0 0x0000003ce2a0e82d in read () from /lib64/libpthread.so.0 > #1 0x0000003ce56dea71 in ?? () from /usr/lib64/libcrypto.so.10 > #2 0x0000003ce56dcdc9 in BIO_read () from /usr/lib64/libcrypto.so.10 > #3 0x0000003ce9a2c1df in ssl3_read_n () from /usr/lib64/libssl.so.10 > #4 0x0000003ce9a2c8dd in ssl3_read_bytes () from /usr/lib64/libssl.so.10 > #5 0x0000003ce9a281a0 in ?? () from /usr/lib64/libssl.so.10 > #6 0x000000000208ede2 in > apache::thrift::transport::TSSLSocket::read(unsigned char*, unsigned int) () > #7 0x000000000208b6f3 in unsigned int > apache::thrift::transport::readAll<apache::thrift::transport::TSocket>(apache::thrift::transport::TSocket&, > unsigned char*, unsigned int) () > #8 0x0000000000cb2aa9 in > apache::thrift::transport::TSaslTransport::receiveSaslMessage(apache::thrift::transport::NegotiationStatus*, > unsigned int*) () > #9 0x0000000000cb03e4 in > apache::thrift::transport::TSaslServerTransport::handleSaslStartMessage() () > #10 0x0000000000cb2c23 in > apache::thrift::transport::TSaslTransport::doSaslNegotiation() () > #11 0x0000000000cb10b8 in > apache::thrift::transport::TSaslServerTransport::Factory::getTransport(boost::shared_ptr<apache::thrift::transport::TTransport>) > () > #12 0x0000000000b13e47 in > apache::thrift::server::TAcceptQueueServer::SetupConnection(boost::shared_ptr<apache::thrift::transport::TTransport>) > () > #13 0x0000000000b14932 in > boost::detail::function::void_function_obj_invoker2<apache::thrift::server::TAcceptQueueServer::serve()::{lambda(int, > boost::shared_ptr<apache::thrift::transport::TTransport> const&)#1}, void, > int, boost::shared_ptr<apache::thrift::transport::TTransport> > const&>::invoke(boost::detail::function::function_buffer&, int, > boost::shared_ptr<apache::thrift::transport::TTransport> const&) () > #14 0x0000000000b177f9 in > impala::ThreadPool<boost::shared_ptr<apache::thrift::transport::TTransport> > >::WorkerThread(int) () > #15 0x0000000000d602af in > impala::Thread::SuperviseThread(std::basic_string<char, > std::char_traits<char>, std::allocator<char> > const&, > std::basic_string<char, std::char_traits<char>, std::allocator<char> > > const&, boost::function<void ()()>, impala::ThreadDebugInfo const*, > impala::Promise<long>*) () > #16 0x0000000000d60aaa in boost::detail::thread_data<boost::_bi::bind_t<void, > void (*)(std::basic_string<char, std::char_traits<char>, std::allocator<char> > > const&, std::basic_string<char, std::char_traits<char>, > std::allocator<char> > const&, boost::function<void ()()>, > impala::ThreadDebugInfo const*, impala::Promise<long>*), > boost::_bi::list5<boost::_bi::value<std::basic_string<char, > std::char_traits<char>, std::allocator<char> > >, > boost::_bi::value<std::basic_string<char, std::char_traits<char>, > std::allocator<char> > >, boost::_bi::value<boost::function<void ()()> >, > boost::_bi::value<impala::ThreadDebugInfo*>, > boost::_bi::value<impala::Promise<long>*> > > >::run() () > #17 0x00000000012d756a in thread_proxy () > #18 0x0000003ce2a07aa1 in start_thread () from /lib64/libpthread.so.0 > #19 0x0000003ce26e893d in clone () from /lib64/libc.so.6 > {noformat} -- This message was sent by Atlassian JIRA (v7.6.3#76005)