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  1. C Driver
  2. CDRIVER-1556

driver aborts after "mongoc_stream_writev(): precondition failed: stream"

    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 1.5.0
    • Affects Version/s: 1.4.0
    • Component/s: Bulk API, libmongoc
    • None
    • Environment:
      Debian 8 (Jessie) 64 bit

      Driver aborted during execution of a bulk operation, which consists of a large number of upserts.

      Console output:

      2016/09/22 00:08:06.0861: [22725]:  WARNING:       stream: Failure to buffer 36 bytes: Failed to buffer 36 bytes within 300000 milliseconds.
      src/mongoc/mongoc-stream.c:152 mongoc_stream_writev(): precondition failed: stream
      Aborted (core dumped)
      

      GDB backtrace:

      Program terminated with signal SIGABRT, Aborted.
      #0  0x00007f8f3e215067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
      56	../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
      (gdb) bt
      #0  0x00007f8f3e215067 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
      #1  0x00007f8f3e216448 in __GI_abort () at abort.c:89
      #2  0x0000000000d74cfe in mongoc_stream_writev (stream=<optimized out>, iov=<optimized out>, iovcnt=<optimized out>, timeout_msec=<optimized out>)
          at src/mongoc/mongoc-stream.c:153
      #3  0x0000000000d75326 in _mongoc_stream_writev_full (stream=0x3f2b, stream@entry=0x7f8eb4006a40, iov=0x58c5, iovcnt=6, timeout_msec=300000, 
          error=0x7f8dba711568) at src/mongoc/mongoc-stream.c:497
      #4  0x0000000000d5fda0 in mongoc_cluster_run_command_internal (cluster=cluster@entry=0x7f8eb40029c0, stream=0x7f8eb4006a40, server_id=1, 
          flags=flags@entry=MONGOC_QUERY_NONE, db_name=db_name@entry=0x7f8df2ed80d0 "some_db", command=command@entry=0x7f8e6effba80, monitored=true, 
          host=0x7f8dbb193008, reply=0x7f8e6effbb00, error=0x7f8dba711568) at src/mongoc/mongoc-cluster.c:240
      #5  0x0000000000d600c9 in mongoc_cluster_run_command_monitored (cluster=cluster@entry=0x7f8eb40029c0, 
          server_stream=server_stream@entry=0x7f8db890c220, flags=flags@entry=MONGOC_QUERY_NONE, db_name=db_name@entry=0x7f8df2ed80d0 "some_db", 
          command=command@entry=0x7f8e6effba80, reply=reply@entry=0x7f8e6effbb00, error=0x7f8dba711568) at src/mongoc/mongoc-cluster.c:377
      #6  0x0000000000d7f9cd in _mongoc_write_command (command=command@entry=0x7f8dbbc14b00, client=client@entry=0x7f8eb40029b0, 
          server_stream=server_stream@entry=0x7f8db890c220, database=database@entry=0x7f8df2ed80d0 "some_db", collection=<optimized out>, 
          write_concern=<optimized out>, offset=<optimized out>, result=0x7f8dba7112e0, error=0x7f8dba711568) at src/mongoc/mongoc-write-command.c:1304
      #7  0x0000000000d7fb2c in _mongoc_write_command_execute (command=0x7f8dbbc14b00, client=0x7f8eb40029b0, server_stream=0x7f8db890c220, 
          database=0x7f8df2ed80d0 "some_db", collection=0x7f8df367afb0 "some_collection", write_concern=0x7f8dba711870, offset=37000, 
          result=0x7f8dba7112e0) at src/mongoc/mongoc-write-command.c:1367
      #8  0x0000000000d5c95a in mongoc_bulk_operation_execute (bulk=0x7f8dba711260, reply=0x58c5, error=0x6) at src/mongoc/mongoc-bulk-operation.c:451
      ...
      

      Note that we did not encounter any problem with this kind of operation and the driver has executed thousands of such operations successfully before the crash.

      We noted a connectivity problem around the time the crash happened. A different thread that is monitoring database connectivity logged:

      mongoc_cursor_next(some_collection): Failed to send "find" command with database "some_db": Failed to read 36 bytes from socket within 10000 milliseconds.
      

      However, that thread did not crash the application and it does not perform bulk upserts but rather a simple finds.

            Assignee:
            bjori Hannes Magnusson
            Reporter:
            cschwarz@incognito.com Christoph Schwarz
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              Created:
              Updated:
              Resolved: