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  1. Couchbase Server
  2. MB-25991

Negative resident ratio shown when non-resident documents expire

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    Description

      Build : 5.0.0-3516

      This is a regression from 5.0.0-3509 (RC4) since we did not see this issue in the system testing runs or elsewhere. Currently unknown when this is a regression since (see comment from Mihir on 2017/09/13).

      On the system testing longevity run with the build 5.0.0-3516 (2nd day of the run), we see some buckets reporting negative active resident ratio stats.

      http://172.23.108.103:8091/ui/index.html#!/buckets/analytics/specific/@172.23.106.188:8091?statsHostname=all&bucket=DISTRICT&specificStat=vb_active_resident_items_ratio&openedStatsBlock=Server%20Resources&openedStatsBlock=Summary&openedSpecificStatsBlock=Specific%20Stats&zoom=minute (Administrator/password)

      Same issue seen for buckets HISTORY and CUSTOMER.

      Checked on the stats endpoint http://172.23.108.103:8091/pools/default/buckets/DISTRICT/stats, the following stats have negative values :

      ep_resident_items_rate, vb_active_resident_items_ratio, vb_replica_resident_items_ratio

      The cluster is live if needed for debugging.

      Screenshot and logs attached.

       

      Attachments

        1. Screen Shot 2017-09-11 at 20.34.33.png
          178 kB
          Mihir Kamdar
        2. Screen Shot 2017-09-12 at 17.55.24.png
          91 kB
          Dave Rigby
        3. Screen Shot 2017-09-12 at 18.01.31.png
          89 kB
          Dave Rigby
        4. Screen Shot 2017-09-12 at 6.02.29 PM.png
          172 kB
          Arunkumar Senthilnathan
        5. Screen Shot 2017-09-13 at 4.09.03 PM.png
          119 kB
          Arunkumar Senthilnathan

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-26108 HashTable datatype counts are incorrect after softDelete

          • Major - Major loss of function.
          • Closed
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              mihir.kamdar Mihir Kamdar (Inactive)
              mihir.kamdar Mihir Kamdar (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

                PagerDuty