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  1. Core Server
  2. SERVER-55248

CRUD state on FSM workload can fail if executed concurrently with a rename

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 5.0.0
    • Component/s: Sharding
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL

      Description

      On the CRUD/DDL fsm workload there is an error that can happen if an update happens during a rename:

       Error: write failed with error: {
          "nMatched" : 0,
          "nUpserted" : 0,
          "nModified" : 0,
          "writeError" : {
              "code" : 175,
              "errmsg" : "collection renamed from 'test0_fsmdb0.fsmcoll00' to 'test0_fsmdb0.fsmcoll01615840135680'. UUID 020b4e1f-f1d1-4af6-8c1a-371e774082ec"
          }
       }
       
      _getErrorWithCode@src/mongo/shell/utils.js:25:13
      quietlyDoAssert@jstests/concurrency/fsm_libs/assert.js:53:18
      assert.writeOK@src/mongo/shell/assert.js:863:13
      _assertCommandWorked@src/mongo/shell/assert.js:704:17
      assert.commandWorked@src/mongo/shell/assert.js:811:16
      wrapAssertFn@jstests/concurrency/fsm_libs/assert.js:65:13
      assertWithLevel/</assertWithLevel[fn]@jstests/concurrency/fsm_libs/assert.js:104:13
      CRUD@jstests\concurrency\fsm_workloads\random_DDL_CRUD_operations.js:141:13
      runFSM@jstests/concurrency/fsm_libs/fsm.js:132:17
      @eval:8:9
      main@jstests/concurrency/fsm_libs/worker_thread.js:217:17
      @eval:5:12
      @eval:3:24
      _threadStartWrapper@:26:16
      

      This ticket can be solved by surrounding the write operations with a try/catch and ignore this specific error because it is related to the query planner. Before that we should ensure that:

      • The same error happens on insert and remove
      • The error is the same if we are running a replica set

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              Assignee:
              pierlauro.sciarelli Pierlauro Sciarelli
              Reporter:
              marcos.grillo Marcos José Grillo Ramirez
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                Created:
                Updated:
                Resolved: