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  1. Core Server
  2. SERVER-25060

Make SplitHeuristics.maxParallelSplits tunable

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: 3.2.6
    • Fix Version/s: None
    • Component/s: Sharding
    • Labels:
      None
    • Operating System:
      ALL

      Description

      We continue to observe lock contention during the split in our environment, which is caused by mongos sending 5 split requests on the same chunk at the same time. All the 5 split requests failed due to lock contention, and mongos would try to split again and again. It makes the sharding become very slow.

      I seems to me it's better to disable to parallel splits?

      Attached is the detail logs on mongod.

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              Assignee:
              backlog-server-sharding Backlog - Sharding Team
              Reporter:
              bydsky xihui he
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                Updated:
                Resolved: