Uploaded image for project: 'Couchbase Server'
  1. Couchbase Server
  2. MB-7943

Memcached drops tap connections without warning

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Cannot Reproduce
    • Affects Version/s: 2.1.0
    • Fix Version/s: 2.5.0
    • Component/s: couchbase-bucket
    • Security Level: Public
    • Labels:
    • Environment:
      SLES11 SP2, Xen virtual machines with a single processor and 1.5GB RAM

      Description

      Servers M1 and M2 are each running couchbase (C1 and C2 respectively, both added to the same cluster via the web interface) and an application (A1 and A2 respectively). A1 is configured to primarily access C2 and to fail over to C1 if C2 becomes unavailable. A2 is similarly configured, only accessing C1 primarily and failing over to C2.

      When accessing A1, Couchbase reports that the value is stored on C2 and has replicated to C1, howerver while accessing A2, Couchbase reports that the value is stored on C1 and has not replicated to C2. Additionally, when attempting to manually rebalance the cluster, the rebalance fails (the log output is the attached image). After consulting the IRC channel, user ingenthr suggested I file this as an issue.

      I've also attached the output of cbcollect_info in the hopes that it might contain something useful. If you need more information, do not hesitate to ask.

      1. memcached.log.8.txt
        584 kB
        Frojoe
      1. couchbase-log1.PNG
        38 kB

        Issue Links

        # Subject Project Status CR V
        For Gerrit Dashboard: &For+MB-7943=message:MB-7943

          Activity

          Hide
          maria Maria McDuff (Inactive) added a comment -

          Tony,

          can u chk if this is now in 2.2.0 build 821.

          Show
          maria Maria McDuff (Inactive) added a comment - Tony, can u chk if this is now in 2.2.0 build 821.
          Hide
          maria Maria McDuff (Inactive) added a comment -

          mike,

          can you pls include the gerrit link and mark as 'resolved'?

          Show
          maria Maria McDuff (Inactive) added a comment - mike, can you pls include the gerrit link and mark as 'resolved'?
          Hide
          thuan Thuan Nguyen added a comment -

          I will try to repro it in 2.2.0-821

          Show
          thuan Thuan Nguyen added a comment - I will try to repro it in 2.2.0-821
          Hide
          mikew Mike Wiederhold added a comment -

          It is not resolved. The issue is just old and we need to make sure that it still exists since it was filed a while ago.

          Show
          mikew Mike Wiederhold added a comment - It is not resolved. The issue is just old and we need to make sure that it still exists since it was filed a while ago.
          Hide
          chiyoung Chiyoung Seo added a comment -

          We added more logs and have been running the same test over the last three weeks repeatedly, but didn't see any of tap disconnection issues so far.

          I'm closing this bug as "not reproduce" at this time. If we see this issue again in 2.5.0, we will have more useful logs.

          Show
          chiyoung Chiyoung Seo added a comment - We added more logs and have been running the same test over the last three weeks repeatedly, but didn't see any of tap disconnection issues so far. I'm closing this bug as "not reproduce" at this time. If we see this issue again in 2.5.0, we will have more useful logs.

            People

            • Assignee:
              chiyoung Chiyoung Seo
              Reporter:
              Frojoe Frojoe
            • Votes:
              0 Vote for this issue
              Watchers:
              5 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved:

                Gerrit Reviews

                There are no open Gerrit changes