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https://issues.apache.org/jira/browse/IMPALA-8403?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16824868#comment-16824868
 ] 

Quanlong Huang commented on IMPALA-8403:
----------------------------------------

I trigger a minidump and resove the threads. Most of these are thrift threads:
{code:java}
0 libpthread-2.19.so + 0xf7eb
1 impalad!apache::thrift::transport::TSocket::read(unsigned char*, unsigned 
int) + 0xad
2 impalad!apache::thrift::transport::TBufferedTransport::peek() + 0x32
3 impalad!apache::thrift::server::TAcceptQueueServer::Task::run() 
[TAcceptQueueServer.cpp : 78 + 0x2]
4 
impalad!impala::ThriftThread::RunRunnable(boost::shared_ptr<apache::thrift::concurrency::Runnable>,
 impala::Promise<unsigned long>*) [thrift-thread.cc : 74 + 0x6]
5 
impalad!boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void,
 boost::_mfi::mf2<void, impala::ThriftThread, 
boost::shared_ptr<apache::thrift::concurrency::Runnable>, 
impala::Promise<unsigned long>*>, 
boost::_bi::list3<boost::_bi::value<impala::ThriftThread*>, 
boost::_bi::value<boost::shared_ptr<apache::thrift::concurrency::Runnable> >, 
boost::_bi::value<impala::Promise<unsigned long>*> > >, 
void>::invoke(boost::detail::function::function_buffer&) [mem_fn_template.hpp : 
280 + 0xe]
6 impalad!impala::Thread::SuperviseThread(std::string const&, std::string 
const&, boost::function<void ()>, impala::ThreadDebugInfo const*, 
impala::Promise<long>*) [function_template.hpp : 767 + 0x7]
7 impalad!boost::detail::thread_data<boost::_bi::bind_t<void, void 
(*)(std::string const&, std::string const&, boost::function<void ()>, 
impala::ThreadDebugInfo const*, impala::Promise<long>*), 
boost::_bi::list5<boost::_bi::value<std::string>, 
boost::_bi::value<std::string>, boost::_bi::value<boost::function<void ()> >, 
boost::_bi::value<impala::ThreadDebugInfo*>, 
boost::_bi::value<impala::Promise<long>*> > > >::run() [bind.hpp : 525 + 0x6]
8 impalad!thread_proxy + 0xda
9 libpthread-2.19.so + 0x8184
10 libc-2.19.so + 0xfdffd{code}

> Possible thread leak in impalad
> -------------------------------
>
>                 Key: IMPALA-8403
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8403
>             Project: IMPALA
>          Issue Type: Bug
>            Reporter: Quanlong Huang
>            Priority: Major
>         Attachments: image-2019-04-10-11-15-11-321.png
>
>
> The metric of thread-manager.running-threads got from 
> http://${impalad_host}:25000/metrics?json shows that the number of running 
> threads keeps increasing. (See the snapshot) This phenomenon is most 
> noticeable in coordinators.
> Maybe a counter bug or threads leak.



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