Uploaded image for project: 'Couchbase Server'
  1. Couchbase Server
  2. MB-46905

[BP 6.6.3] On rebalanced out node on remote link, target cluster details can be lost

    XMLWordPrintable

Details

    • Untriaged
    • 1
    • Yes
    • CX Sprint 251, CX Sprint 252

    Description

      For remote links, analytics monitors and accommodates target cluster topology changes, by monitoring a streaming endpoint /pools/default/nodeServicesStreaming on one of the nodes in the target cluster. Should the node analytics is monitoring against itself get rebalanced out, analytics may connect back to the rebalanced out node not realizing that it has left the cluster. Based on the topology information it receives from the cluster-less node, it will wipe out the valid topology information in the remote link, leaving the link in a broken state:

      • additional topology changes will not be realized
      • should the link disconnect, and is reconnected:
        • it will believe that the shadowed buckets have been dropped, causing all analytics collections on that remote link to truncate
        • other than to truncate the analytics collections, the link will to connect
      • the link will continue to not be usable until either:
        • the rebalanced out node happens to be added back to the cluster
        • the link is ALTERed or DROPped+re-CREATEd

      Attachments

        Issue Links

          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              michael.blow Michael Blow
              michael.blow Michael Blow
              Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes

                  PagerDuty