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  1. Python Driver
  2. PYTHON-469

Possible to get: E11000 duplicate key error index ... on a remove

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Details

    • Bug
    • Status: Closed
    • Critical - P2
    • Resolution: Won't Fix
    • 2.4.1
    • None
    • None
    • None
    • Linux RHEL 4

    Description

      We, intermittently, against a sharded cluster via a mongos get:

      details
      {u'code': 11000, u'ok': 1.0, u'initialGLEHost': u'rs1/cn61-ib:27018', u'err': u'E11000 duplicate key error index: mongoose_ahldev.centaur.$symbol_asc_sha_asc  dup key: { : "EUROZONE_book_value_to_price", : BinData }', u'singleShard': u'rs4/cn64-ib:27018', u'connectionId': 8278, u'n': 0, u'writebackGLE': {u'code': 11000, u'ok': 1.0, u'err': u'E11000 duplicate key error index: mongoose_ahldev.centaur.$symbol_asc_sha_asc  dup key: { : "EUROZONE_book_value_to_price", : BinData }', u'singleShard': u'rs4/cn64-ib:27018', u'connectionId': 8278, u'n': 0, u'lastOp': Timestamp(0, 0)}, u'lastOp': Timestamp(0, 0)}
       
       
      __check_response_to_last_error [mongo_client.py:794]	
      _send_message [mongo_client.py:854]	
      remove [collection.py:565]	

      i.e. we're getting a E11000 duplicate key error from a remove!

      Immediately before this is a find_one, and both are in a request.

      (Also in control flow is a whole bunch of inserts w=0, some of which are expected to raise duplicateKeyErrors, which we want to ignore.)

      Interestingly this only seems to happen via one mongos at a time. I.e. going through my local mongos, I can't trigger the problem, but picking the mongos where the problem last happened, and it happens everytime.

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              bernie@mongodb.com Bernie Hackett
              jblackburn James Blackburn
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                Updated:
                Resolved: