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  1. Core Server
  2. SERVER-14527

MongoDB servers processes should only setLastError when wire writes or write commands fail.

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    • Backwards Compatibility:
      Minor Change

      Description

      MongoDB servers only promise that getLastError returns meaningful information about errors in wire-protocol writes or write commands. For finds, getmores and all other commands, the error component of getLastError has unspecified meaning. By setting the lastError information higher in the call stack, when we know they won't be swallowed, we can make lastError more sensible, and also break the triangle dependency between the lasterror, network and foundation libraries.

      This changes the behavior from prior versions of MongoDB, in which servers occasionally set the last error information in non-write commands and failed find operations. However, the servers were not consistent about the conditions in which they would set the information, as drivers were not expected to consult it.

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              Assignee:
              schwerin Andy Schwerin
              Reporter:
              schwerin Andy Schwerin
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