[
https://issues.apache.org/jira/browse/MESOS-36?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Benjamin Hindman resolved MESOS-36.
-----------------------------------
Resolution: Fixed
Assignee: Benjamin Hindman
Fixed with the Mac OS X Lion (10.7) update.
> race condition on MesosExecutorDriver destruction for Python
> ------------------------------------------------------------
>
> Key: MESOS-36
> URL: https://issues.apache.org/jira/browse/MESOS-36
> Project: Mesos
> Issue Type: Bug
> Environment: OS X 10.6.8, Python 2.6.7
> Reporter: brian wickman
> Assignee: Benjamin Hindman
>
> There's a race condition between driver.stop/abort and the destruction of the
> Python driver object.
> For example:
> def main(args, options):
> thermos_executor = ThermosExecutor(options)
> mesos.MesosExecutorDriver(thermos_executor).run()
> will routinely cause the segfault as attached at the end of the thread.
> If this is changed to
> def main(args, options):
> thermos_executor = ThermosExecutor(options)
> drv = mesos.MesosExecutorDriver(thermos_executor)
> drv.run()
> The code works, which indicates an issue (as you can see in the stack trace
> below) in the implicit reference counting on the MesosExecutorDriver object.
> The launchTask in my example does some work, sends a framework message when
> the task is finished, then issues a driver.stop().
> Process: Python [64054]
> Path:
> /Users/wickman/Local/Library/Frameworks/Python.framework/Versions/2.6/Resources/Python.app/Contents/MacOS/Python
> Identifier: Python
> Version: ??? (???)
> Code Type: X86-64 (Native)
> Parent Process: java [64016]
> Date/Time: 2011-10-07 14:30:01.103 -0700
> OS Version: Mac OS X 10.6.8 (10K549)
> Report Version: 6
> Interval Since Last Report: 944086 sec
> Crashes Since Last Report: 18
> Per-App Crashes Since Last Report: 12
> Anonymous UUID: 3A043B60-6C64-4A96-BA3A-C04C21BA960E
> Exception Type: EXC_CRASH (SIGABRT)
> Exception Codes: 0x0000000000000000, 0x0000000000000000
> Crashed Thread: 1
> Application Specific Information:
> abort() called
> Thread 0: Dispatch queue: com.apple.main-thread
> 0 libSystem.B.dylib 0x00007fff869bba6a __semwait_signal + 10
> 1 libSystem.B.dylib 0x00007fff869bf881 _pthread_cond_wait +
> 1286
> 2 org.python.python 0x00000001000ef554
> PyThread_acquire_lock + 116
> 3 org.python.python 0x00000001000b499a PyEval_RestoreThread
> + 58
> 4 org.python.python 0x00000001000f3f20
> lock_PyThread_acquire_lock + 80
> 5 org.python.python 0x00000001000bc558 PyEval_EvalFrameEx +
> 28696
> 6 org.python.python 0x00000001000bd305 PyEval_EvalCodeEx +
> 2197
> 7 org.python.python 0x00000001000bb29d PyEval_EvalFrameEx +
> 23901
> 8 org.python.python 0x00000001000bb6fa PyEval_EvalFrameEx +
> 25018
> 9 org.python.python 0x00000001000bb6fa PyEval_EvalFrameEx +
> 25018
> 10 org.python.python 0x00000001000bd305 PyEval_EvalCodeEx +
> 2197
> 11 org.python.python 0x000000010003b50d function_call + 429
> 12 org.python.python 0x000000010000bb92 PyObject_Call + 98
> 13 org.python.python 0x00000001000b76d2 PyEval_EvalFrameEx +
> 8594
> 14 org.python.python 0x00000001000bd305 PyEval_EvalCodeEx +
> 2197
> 15 org.python.python 0x000000010003b405 function_call + 165
> 16 org.python.python 0x000000010000bb92 PyObject_Call + 98
> 17 org.python.python 0x00000001000b43c7
> PyEval_CallObjectWithKeywords + 87
> 18 org.python.python 0x00000001000e202a Py_Finalize + 186
> 19 org.python.python 0x00000001000e1b46 handle_system_exit +
> 246
> 20 org.python.python 0x00000001000e1d95 PyErr_PrintEx + 437
> 21 org.python.python 0x00000001000f16a4 RunModule + 404
> 22 org.python.python 0x00000001000f2109 Py_Main + 2505
> 23 org.python.python 0x0000000100000e22 0x100000000 + 3618
> 24 org.python.python 0x0000000100000d41 0x100000000 + 3393
> Thread 1 Crashed:
> 0 libSystem.B.dylib 0x00007fff869f39ce
> __semwait_signal_nocancel + 10
> 1 libSystem.B.dylib 0x00007fff869f38d0 nanosleep$NOCANCEL +
> 129
> 2 libSystem.B.dylib 0x00007fff86a503ce usleep$NOCANCEL + 57
> 3 libSystem.B.dylib 0x00007fff86a6fa00 abort + 93
> 4 _mesos.so 0x000000010190495c
> google::LogSink::~LogSink() + 0
> 5 _mesos.so 0x000000010190473b
> google::LogMessage::Fail() + 13
> 6 _mesos.so 0x0000000101909cae
> google::LogMessage::SendToLog() + 1212
> 7 _mesos.so 0x00000001019066c6
> google::LogMessage::Flush() + 418
> 8 _mesos.so 0x0000000101907e5e
> google::LogMessageFatal::~LogMessageFatal() + 22
> 9 _mesos.so 0x0000000101915e4c
> process::ProcessManager::wait(process::ProcessBase*, process::UPID const&) +
> 670
> 10 _mesos.so 0x0000000101920eb9
> process::wait(process::UPID const&, double) + 183
> 11 _mesos.so 0x000000010186c359
> process::wait(process::ProcessBase const*, double) + 45
> 12 _mesos.so 0x000000010185d2c6
> mesos::MesosExecutorDriver::~MesosExecutorDriver() + 98
> 13 _mesos.so 0x000000010171791a
> mesos::python::MesosExecutorDriverImpl_dealloc(mesos::python::MesosExecutorDriverImpl*)
> + 42 (mesos_executor_driver_impl.cpp:159)
> 14 org.python.python 0x0000000100069521 tupledealloc + 129
> 15 org.python.python 0x0000000100010a0a PyObject_CallMethod
> + 474
> 16 _mesos.so 0x000000010171b477
> mesos::python::ProxyExecutor::launchTask(mesos::ExecutorDriver*,
> mesos::TaskDescription const&) + 103 (proxy_executor.cpp:68)
> 17 _mesos.so 0x0000000101860641
> boost::_mfi::mf2<void, mesos::Executor, mesos::ExecutorDriver*,
> mesos::TaskDescription const&>::operator()(mesos::Executor*,
> mesos::ExecutorDriver*, mesos::TaskDescription const&) const + 113
> 18 _mesos.so 0x0000000101861010 void
> boost::_bi::list3<boost::_bi::value<mesos::Executor*>,
> boost::_bi::value<mesos::MesosExecutorDriver*>,
> boost::reference_wrapper<mesos::TaskDescription const>
> >::operator()<boost::_mfi::mf2<void, mesos::Executor, mesos::ExecutorDriver*,
> mesos::TaskDescription const&>, boost::_bi::list0>(boost::_bi::type<void>,
> boost::_mfi::mf2<void, mesos::Executor, mesos::ExecutorDriver*,
> mesos::TaskDescription const&>&, boost::_bi::list0&, int) + 118
> 19 _mesos.so 0x0000000101861052
> boost::_bi::bind_t<void, boost::_mfi::mf2<void, mesos::Executor,
> mesos::ExecutorDriver*, mesos::TaskDescription const&>,
> boost::_bi::list3<boost::_bi::value<mesos::Executor*>,
> boost::_bi::value<mesos::MesosExecutorDriver*>,
> boost::reference_wrapper<mesos::TaskDescription const> > >::operator()() + 54
> 20 ??? 0x0000000401861071 0 + 17205432433
> 21 libSystem.B.dylib 0x00007fff86a62dc9 setcontext + 25
> 22 libSystem.B.dylib 0x00007fff869b9fd6 _pthread_start + 331
> 23 libSystem.B.dylib 0x00007fff869b9e89 thread_start + 13
> Thread 2:
> 0 libSystem.B.dylib 0x00007fff869c4932 select$DARWIN_EXTSN
> + 10
> 1 _mesos.so 0x0000000101956518 select_poll + 168
> 2 _mesos.so 0x0000000101957327 ev_loop + 631
> 3 _mesos.so 0x00000001019195ff
> process::serve(void*) + 26
> 4 libSystem.B.dylib 0x00007fff869b9fd6 _pthread_start + 331
> 5 libSystem.B.dylib 0x00007fff869b9e89 thread_start + 13
> Thread 1 crashed with X86 Thread State (64-bit):
> rax: 0x000000000000003c rbx: 0x00000001023e3340 rcx: 0x00000001023e32f8
> rdx: 0x0000000000000001
> rdi: 0x000000000000030f rsi: 0x0000000000000000 rbp: 0x00000001023e3330
> rsp: 0x00000001023e32f8
> r8: 0x0000000000000000 r9: 0x0000000000989680 r10: 0x0000000000000001
> r11: 0x0000000000000246
> r12: 0x0000000000000000 r13: 0x0000000102264cf8 r14: 0x0000000000000002
> r15: 0x0000000100179110
> rip: 0x00007fff869f39ce rfl: 0x0000000000000247 cr2: 0x000000010158cc00
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