Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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None
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None
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None
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None
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OS X 10.6.8, Python 2.6.7
Description
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
Binary Images:
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