Critical Description
As seen in a number of tests (http://cv.jenkins.couchbase.com/job/kv_engine.linux-CE/job/master/8030/) we see a timeout when trying to shut down the test
08:59:39 Note: Google Test filter = TransportProtocols/ExternalAuthTest.*
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08:59:39 [==========] Running 11 tests from 1 test suite.
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08:59:39 [----------] Global test environment set-up.
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08:59:39 [----------] 11 tests from TransportProtocols/ExternalAuthTest
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestAllMechsOffered/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestAllMechsOffered/Mcbp (7 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthWithNoExternalProvider/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthWithNoExternalProvider/Mcbp (7 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthSuccessful/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthSuccessful/Mcbp (13 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthUnknownUser/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthUnknownUser/Mcbp (14 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthIncorrectPasword/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthIncorrectPasword/Mcbp (14 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthNoRbacUser/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthNoRbacUser/Mcbp (13 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestExternalAuthServiceDying/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestExternalAuthServiceDying/Mcbp (7 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestReloadRbacDbDontNukeExternalUsers/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestReloadRbacDbDontNukeExternalUsers/Mcbp (9 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.GetActiveUsers/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.GetActiveUsers/Mcbp (221 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestImpersonateExternalUser/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestImpersonateExternalUser/Mcbp (8 ms)
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08:59:39 [ RUN ] TransportProtocols/ExternalAuthTest.TestErrorIncludeLdapInfo/Mcbp
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08:59:39 [ OK ] TransportProtocols/ExternalAuthTest.TestErrorIncludeLdapInfo/Mcbp (7 ms)
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08:59:39
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/usr/bin/timeout: the monitored command dumped core
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The process isn't stuck or blocked it is just not serving the single connection we've got left (instead it looks like it is constantly trying to reschedule it):
25210 epoll_wait(70, [{EPOLLIN, {u32=68, u64=68}}], 32, -1) = 1
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25210 recvfrom(68, "\0\0\0", 512, 0, NULL, NULL) = 3
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 epoll_wait(70, [{EPOLLIN, {u32=68, u64=68}}], 32, -1) = 1
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25210 recvfrom(68, "\0\0", 512, 0, NULL, NULL) = 2
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 epoll_wait(70, [{EPOLLIN, {u32=68, u64=68}}], 32, -1) = 1
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25210 recvfrom(68, "\0\0", 512, 0, NULL, NULL) = 2
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 sendto(69, "\0", 1, 0, NULL, 0) = 1
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25210 epoll_wait(70, [{EPOLLIN, {u32=68, u64=68}}], 32, -1) = 1
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25210 recvfrom(68, "\0\0", 512, 0, NULL, NULL) = 2
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25193 <... clock_nanosleep resumed>0x7ffe08fd0b00) = 0
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25210 sendto(69, "\0", 1, 0, NULL, 0 <unfinished ...>
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25193 sendto(69, "\0", 1, 0, NULL, 0 <detached ...>
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