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  1. Core Server
  2. SERVER-48400

Secondary node memory arise while balancer doing work

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Duplicate
    • Affects Version/s: 4.0.13
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Backwards Compatibility:
      Fully Compatible
    • Operating System:
      ALL

      Description

      Hi,

      We have an sharding instance configured a balancer window for 3:00am - 6:00am(GMT+8) and we observed that while balancer is doing work, all shard's secondary nodes' memory would arise. Such things would not happen on primary nodes. This may be related with the fact that all query requests are on secondary nodes. I have enabled one shard's heapProfiling and uploaded FTDC data and related logs. Please help identify this issue. Thanks!

        Attachments

        1. diagnostic.data.tar.gz
          149.30 MB
        2. inserts.png
          inserts.png
          73 kB
        3. mongod.log.tar.gz
          17.87 MB
        4. planCacheTotalSizeEstimateBytes.png
          planCacheTotalSizeEstimateBytes.png
          258 kB
        5. SERVER-48400.png
          SERVER-48400.png
          271 kB

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              Assignee:
              dmitry.agranat Dmitry Agranat
              Reporter:
              mingyan.zc@gmail.com Cen Zheng
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                Dates

                Created:
                Updated:
                Resolved: