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  1. Core Server
  2. SERVER-4745

Figuring out which shard to send a query to takes a long time when doing large $in queries on the shard key

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 1.8.4, 2.0.2
    • Fix Version/s: 2.0.3, 2.1.1
    • Component/s: Sharding
    • Labels:
      None
    • Operating System:
      ALL

      Description

      The problem seems to be in ChunkManager::getShardsForQuery in chunk.cpp. Seems to do n^2 comparisons to figure out where to send the queries.

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          is depended on by

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-4555 check and clean sharding utilization of queryutil code

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-4960 Optimize shard selection on $in queries

          • Major - P3 - Major loss of function.
          • Open

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              People

              Assignee:
              spencer Spencer Brody (Inactive)
              Reporter:
              spencer Spencer Brody (Inactive)
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                Updated:
                Resolved: