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  1. MongoDB ETL Tools
  2. TOOLS-191

mongosniff assertion failure when reading diaglog

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Gone away
    • Affects Version/s: Legacy C++ Implementation
    • Fix Version/s: None
    • Component/s: mongosniff
    • Labels:
      None
    • Environment:
      64-bit Ubuntu 11.04
      3.0.0-17 kernel
      SMP

      Description

      git version: e819261720e48699679c511c69f2f82c2c6a94ab

      Steps:
      1. Startup mongod with --nojournal --diaglog 3
      2. Perform some inserts and query.
      3. Shutdown mongod (used ctrl+c)
      4. Read diaglog contents using mongosniff

      db level locking enabled: 1
      60 admin.$cmd
       
      	query: { whatsmyuri: 1 }  ntoreturn: 1 ntoskip: 0
      88 admin.$cmd
       
      	query: { replSetGetStatus: 1.0, forShell: 1.0 }  ntoreturn: -1 ntoskip: 0
      63 test.user
       
      	insert: { _id: ObjectId('4f86f5ffff6967e8b6be025d'), x: 3.0 }
      76 test.$cmd
       
      	query: { getlasterror: 1.0, w: 1.0 }  ntoreturn: -1 ntoskip: 0
      88 admin.$cmd
       
      	query: { replSetGetStatus: 1.0, forShell: 1.0 }  ntoreturn: -1 ntoskip: 0
      88 admin.$cmd
       
      	query: { replSetGetStatus: 1.0, forShell: 1.0 }  ntoreturn: -1 ntoskip: 0
      65 test.user
       
      	query: { x: { $gte: 2.0 } }  ntoreturn: 0 ntoskip: 0
      88 admin.$cmd
       
      	query: { replSetGetStatus: 1.0, forShell: 1.0 }  ntoreturn: -1 ntoskip: 0
      Thu Apr 12 11:35:22   Assertion failure _state.get() < 0 src/mongo/util/concurrency/rwlock.h 167
      0x8d72c6 0xb17254 0xb1b734 0x90e621 0x90e8ef 0x9120f0 0x8583dd 0x858a96 0x7f0359ed730d 0x856989 
       ./mongosniff(_ZN5mongo15printStackTraceERSo+0x27) [0x8d72c6]
       ./mongosniff(_ZN5mongo12sayDbContextEPKc+0x5e) [0xb17254]
       ./mongosniff(_ZN5mongo8assertedEPKcS1_j+0x124) [0xb1b734]
       ./mongosniff(_ZN5mongo15RWLockRecursive23assertExclusivelyLockedEv+0x41) [0x90e621]
       ./mongosniff(_ZN5mongo20LockMongoFilesShared23assertExclusivelyLockedEv+0x13) [0x90e8ef]
       ./mongosniff(_ZN5mongo16MemoryMappedFile5closeEv+0x12) [0x9120f0]
       ./mongosniff(_Z14processDiagLogPKc+0x228) [0x8583dd]
       ./mongosniff(main+0x62b) [0x858a96]
       /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f0359ed730d]
       ./mongosniff() [0x856989]
      terminate called after throwing an instance of 'mongo::AssertionException'
        what():  assertion src/mongo/util/concurrency/rwlock.h:167
      Aborted

      addr2line output for stacktrace:

      mongo::printStackTrace(std::ostream&)
      /home/ren/mongo/src/mongo/util/goodies.h:61
      mongo::sayDbContext(char const*)
      /home/ren/mongo/src/mongo/util/util.cpp:194
      mongo::asserted(char const*, char const*, unsigned int)
      /home/ren/mongo/src/mongo/util/assert_util.cpp:109
      mongo::RWLockRecursive::assertExclusivelyLocked()
      /home/ren/mongo/src/mongo/util/concurrency/rwlock.h:168
      mongo::LockMongoFilesShared::assertExclusivelyLocked()
      /home/ren/mongo/src/mongo/util/mmap.h:49
      mongo::MemoryMappedFile::close()
      /home/ren/mongo/src/mongo/util/mmap_posix.cpp:42
      processDiagLog(char const*)
      /home/ren/mongo/src/mongo/tools/sniffer.cpp:402
      main
      /home/ren/mongo/src/mongo/tools/sniffer.cpp:510
      ??
      ??:0
      _start
      ??:0

      Remarks: diaglog was able to output all the operations done in the shell; it just doesn't exit cleanly.

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            • Assignee:
              backlog-server-platform Backlog - Platform Team
              Reporter:
              renctan Randolph Tan
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              Dates

              • Created:
                Updated:
                Resolved: