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  1. Couchbase Server
  2. MB-7383

active item resident ratio drop significantly when adding a 2.0 node to 1.8.1 cluster for upgrade ( sasl bucket )


    • Type: Bug
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Cannot Reproduce
    • Affects Version/s: 2.0
    • Fix Version/s: 2.0.1
    • Component/s: couchbase-bucket
    • Security Level: Public
    • Labels:


      add 2x2.0 nodes to a 3 node cluster with 2 buckets ( default and sasl where active resident ration is 60% ) few minutes after upgrade process begins active item ration on which is an existing 1.8.1 node , drops from 60% > 58>48->38-15->5 and then we decided to stop rebalance

      i grabbed diags from the node which resident ratio dropped from 63 percent to 5 percent.

      please open a bug asap and mention this there. assign the bug to chiyoung and hoping that he or mike can take a look at the cluster.

      [stats:debug] [2012-12-08 17:43:52]
      active item resident ratio is at 63% and everything looks normal

      and then at
      [stats:debug] [2012-12-08 17:45:32]
      vb_active_perc_mem_resident 58

      and at
      [stats:debug] [2012-12-08 17:47:12]
      vb_active_perc_mem_resident 49

      and at
      [stats:debug] [2012-12-08 18:03:51]
      vb_active_perc_mem_resident 35

      what has happened between 17:45 and 17:47 or between 17:56 and 18:03 that pushed the resident ratio this low.
      whatever it is there is a combination of 1.8.1 and 2.0 that is causing the issue

      collect info from other nodes:

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          • Assignee:
            Chisheng Chisheng Hong (Inactive)
            farshid Farshid Ghods (Inactive)
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            • Created:

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