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  1. Mesos
  2. MESOS-9609

Master check failure when marking agent unreachable.

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    • Mesos Foundations: RI-13 Sp 44, Mesos Foundations: RI13 Sp 45
    • 3

    Description

      Mar 11 10:04:33 research docker[4503]: I0311 10:04:33.815433    13 http.cpp:1185] HTTP POST for /master/api/v1/scheduler from 10.142.0.5:55133
Mar 11 10:04:33 research docker[4503]: I0311 10:04:33.815588    13 master.cpp:5467] Processing DECLINE call for offers: [ 5e57f633-a69c-4009-b773-990b4b8984ad-O58323 ] for framework 5e57f633-a69c-4009-b7
Mar 11 10:04:33 research docker[4503]: I0311 10:04:33.815693    13 master.cpp:10703] Removing offer 5e57f633-a69c-4009-b773-990b4b8984ad-O58323
Mar 11 10:04:35 research docker[4503]: I0311 10:04:35.820142    10 master.cpp:8227] Marking agent 5e57f633-a69c-4009-b773-990b4b8984ad-S49 at slave(1)@10.142.0.10:5051 (tf-mesos-agent-t7c8.c.bitcoin-engi
Mar 11 10:04:35 research docker[4503]: I0311 10:04:35.820367    10 registrar.cpp:495] Applied 1 operations in 86528ns; attempting to update the registry
Mar 11 10:04:35 research docker[4503]: I0311 10:04:35.820572    10 registrar.cpp:552] Successfully updated the registry in 175872ns
Mar 11 10:04:35 research docker[4503]: I0311 10:04:35.820642    11 master.cpp:8275] Marked agent 5e57f633-a69c-4009-b773-990b4b8984ad-S49 at slave(1)@10.142.0.10:5051 (tf-mesos-agent-t7c8.c.bitcoin-engin
Mar 11 10:04:35 research docker[4503]: I0311 10:04:35.820957     9 hierarchical.cpp:609] Removed agent 5e57f633-a69c-4009-b773-990b4b8984ad-S49
Mar 11 10:04:35 research docker[4503]: F0311 10:04:35.851961    11 master.cpp:10018] Check failed: 'framework' Must be non NULL
Mar 11 10:04:35 research docker[4503]: *** Check failure stack trace: ***
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6044a7d  google::LogMessage::Fail()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6046830  google::LogMessage::SendToLog()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6044663  google::LogMessage::Flush()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6047259  google::LogMessageFatal::~LogMessageFatal()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5258e14  google::CheckNotNull<>()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c521dfc8  mesos::internal::master::Master::__removeSlave()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c521f1a2  mesos::internal::master::Master::_markUnreachable()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5f98f11  process::ProcessBase::consume()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5fb2a4a  process::ProcessManager::resume()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5fb65d6  _ZNSt6thread5_ImplISt12_Bind_simpleIFZN7process14ProcessManager12init_threadsEvEUlvE_vEEE6_M_runEv
Mar 11 10:04:36 research docker[4503]: @     0x7f96c35d4c80  (unknown)
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2de76ba  start_thread
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2b1d41d  (unknown)
Mar 11 10:04:36 research docker[4503]: *** Aborted at 1520762676 (unix time) try "date -d @1520762676" if you are using GNU date ***
Mar 11 10:04:36 research docker[4503]: PC: @     0x7f96c2a4d196 (unknown)
Mar 11 10:04:36 research docker[4503]: *** SIGSEGV (@0x0) received by PID 1 (TID 0x7f96b986d700) from PID 0; stack trace: ***
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2df1390 (unknown)
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2a4d196 (unknown)
Mar 11 10:04:36 research docker[4503]: @     0x7f96c604ce2c google::DumpStackTraceAndExit()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6044a7d google::LogMessage::Fail()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6046830 google::LogMessage::SendToLog()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6044663 google::LogMessage::Flush()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c6047259 google::LogMessageFatal::~LogMessageFatal()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5258e14 google::CheckNotNull<>()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c521dfc8 mesos::internal::master::Master::__removeSlave()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c521f1a2 mesos::internal::master::Master::_markUnreachable()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5f98f11 process::ProcessBase::consume()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5fb2a4a process::ProcessManager::resume()
Mar 11 10:04:36 research docker[4503]: @     0x7f96c5fb65d6 _ZNSt6thread5_ImplISt12_Bind_simpleIFZN7process14ProcessManager12init_threadsEvEUlvE_vEEE6_M_runEv
Mar 11 10:04:36 research docker[4503]: @     0x7f96c35d4c80 (unknown)
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2de76ba start_thread
Mar 11 10:04:36 research docker[4503]: @     0x7f96c2b1d41d (unknown)
Mar 11 10:04:38 research systemd[1]: mesos-master2.service: main process exited, code=exited, status=139/n/a
Mar 11 10:04:38 research docker[18886]: mesos-master
Mar 11 10:04:38 research systemd[1]: Unit mesos-master2.service entered failed state.

      Additional case:

       I0715 02:56:40.071446    13 master.cpp:1295] Agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150) disconnected
 I0715 02:56:40.071503    13 master.cpp:3333] Disconnecting agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150)
 I0715 02:56:40.071527    13 master.cpp:3352] Deactivating agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150)
 I0715 02:56:40.071563    13 master.cpp:1319] Removing framework 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-0000 (toil) from disconnected agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150) because the framework is not checkpointing
 I0715 02:56:40.071579    13 master.cpp:11006] Removing framework 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-0000 (toil) from agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150)
 I0715 02:56:40.071583    12 hierarchical.cpp:829] Agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 deactivated
 I0715 02:56:40.071619    13 master.cpp:11766] Removing executor 'toil-41' with resources {} of framework 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-0000 on agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 at slave(1)@10.0.138.150:5051 (10.0.138.150)
 I0715 02:58:08.642220    12 master.cpp:9130] Marking agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 (10.0.138.150) unreachable: health check timed out
 I0715 02:58:08.642675    11 registrar.cpp:487] Applied 1 operations in 305592ns; attempting to update the registry
 I0715 02:58:08.642922    13 registrar.cpp:544] Successfully updated the registry in 187904ns
 I0715 02:58:08.643081    17 master.cpp:9173] Marked agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0 (10.0.138.150) unreachable: health check timed out
 F0715 02:58:08.643210    17 master.cpp:11402] Check failed: 'framework' Must be non NULL
 *** Check failure stack trace: ***
 I0715 02:58:08.643254    12 hierarchical.cpp:680] Removed agent 9d8dd16c-13f4-4f15-bac8-e5138b2862ee-S0
     @     0x7ffbcffd090d  google::LogMessage::Fail()
     @     0x7ffbcffd2748  google::LogMessage::SendToLog()
     @     0x7ffbcffd04f3  google::LogMessage::Flush()
     @     0x7ffbcffd31d9  google::LogMessageFatal::~LogMessageFatal()
     @     0x7ffbcec65024  google::CheckNotNull<>()
     @     0x7ffbcec32658  mesos::internal::master::Master::__removeSlave()
     @     0x7ffbcec33b13  mesos::internal::master::Master::_markUnreachable()
     @     0x7ffbcec33e55  _ZNO6lambda12CallableOnceIFN7process6FutureIbEEvEE10CallableFnINS_8internal7PartialIZN5mesos8internal6master6Master15markUnreachableERKNS9_9SlaveInfoEbRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEUlbE_JbEEEEclEv
     @     0x7ffbce93d5d8  _ZNO6lambda12CallableOnceIFvPN7process11ProcessBaseEEE10CallableFnINS_8internal7PartialIZNS1_8internal8DispatchINS1_6FutureIbEEEclINS0_IFSC_vEEEEESC_RKNS1_4UPIDEOT_EUlSt10unique_ptrINS1_7PromiseIbEESt14default_deleteISO_EEOSG_S3_E_ISR_SG_St12_PlaceholderILi1EEEEEEclEOS3_
     @     0x7ffbcff18371  process::ProcessBase::consume()
     @     0x7ffbcff3a97a  process::ProcessManager::resume()
     @     0x7ffbcff3e6a6  _ZNSt6thread5_ImplISt12_Bind_simpleIFZN7process14ProcessManager12init_threadsEvEUlvE_vEEE6_M_runEv
     @     0x7ffbcc2cd9e0  (unknown)
     @     0x7ffbcbde06db  start_thread
     @     0x7ffbcbb0988f  (unknown)

      After an analysis of the more recent logs included in the comments below, the following seems to occur:

      1) The last of the framework’s tasks is removed:

      Oct 27 23:21:18 ip-10-0-131-86.ec2.internal docker[1839]: I1027 23:21:18.493418 15 master.cpp:12171] Removing task 2 with resources cpus(allocated: *):1; disk(allocated: *):4024; mem(allocated: *):2048 of framework 522424c1-2fac-42ab-9a70-b424266218a9-0000 on agent 522424c1-2fac-42ab-9a70-b424266218a9-S0 at slave(1)@10.0.143.144:5051 (10.0.143.144)
      which means the framework’s entry in slave->tasks is erased: https://github.com/apache/mesos/blob/e13929d62663015162db7e66c6600fe414d03ec3/src/master/master.cpp#L13527-L13529

      2) Later, the agent disconnects and since the framework is not checkpointing, it is removed from the Slave struct:

      Oct 27 23:23:20 ip-10-0-131-86.ec2.internal docker[1839]: I1027 23:23:20.248260 14 master.cpp:1321] Removing framework 522424c1-2fac-42ab-9a70-b424266218a9-0000 (toil) from disconnected agent 522424c1-2fac-42ab-9a70-b424266218a9-S0 at slave(1)@10.0.143.144:5051 (10.0.143.144) because the framework is not checkpointing
      Oct 27 23:23:20 ip-10-0-131-86.ec2.internal docker[1839]: I1027 23:23:20.248289 14 master.cpp:11436] Removing framework 522424c1-2fac-42ab-9a70-b424266218a9-0000 (toil) from agent 522424c1-2fac-42ab-9a70-b424266218a9-S0 at slave(1)@10.0.143.144:5051 (10.0.143.144)
      Oct 27 23:23:20 ip-10-0-131-86.ec2.internal docker[1839]: I1027 23:23:20.248311 14 master.cpp:12211] Removing executor 'toil-440' with resources {} of framework 522424c1-2fac-42ab-9a70-b424266218a9-0000 on agent 522424c1-2fac-42ab-9a70-b424266218a9-S0 at slave(1)@10.0.143.144:5051 (10.0.143.144)
      We see no logging related to task removal since slave->tasks[framework->id()] was empty this time. however, since we use operator[] to inspect the task map here, we perform an insertion and it has a side effect: https://github.com/apache/mesos/blob/e13929d62663015162db7e66c6600fe414d03ec3/src/master/master.cpp#L11416
      This means that slave->tasks[framework->id()] now exists but has been initialized to an empty map. ruh roh.

      3) Very soon after, the framework failover timeout elapses and the framework is removed:

      Oct 27 23:23:22 ip-10-0-131-86.ec2.internal docker[1839]: I1027 23:23:22.890070 11 master.cpp:10224] Framework failover timeout, removing framework 522424c1-2fac-42ab-9a70-b424266218a9-0000 (toil)
      4) Now when __removeSlave() iterates over the keys of slave->tasks, it finds a key which points to a framework that has already been removed: https://github.com/apache/mesos/blob/e13929d62663015162db7e66c6600fe414d03ec3/src/master/master.cpp#L11796-L11800

      We need to prevent that unintended map insertion to avoid the crash.

      The resolution of this ticket should also involve the writing of a regression test.

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          fixes

          Bug - A problem which impairs or prevents the functions of the product. MESOS-10146 Removing task from slave when framework is disconnected causes master to crash

          • Blocker - Blocks development and/or testing work, production could not run
          • Resolved
          is related to

          Bug - A problem which impairs or prevents the functions of the product. MESOS-7991 fatal, check failed !framework->recovered()

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

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              bmahler Benjamin Mahler
              greggomann Greg Mann
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                Created:
                Updated:
                Resolved: