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  1. Couchbase Server
  2. MB-11398

XDCR replicates data in decaying bursts after recent changes in ep-engine

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Details

    • Bug
    • Resolution: Cannot Reproduce
    • Major
    • 3.0
    • 3.0
    • None
    • Security Level: Public
    • Build 3.0.0-786

      Platform = Physical
      OS = CentOS 6.5
      CPU = Intel Xeon E5-2680 v2 (40 vCPU)
      Memory = 256 GB
      Disk = RAID 10 SSD

    Description

      List of changes:
      http://builder.hq.couchbase.com/#/compare/couchbase-server-enterprise_centos6_x86_64_3.0.0-785-rel.rpm/couchbase-server-enterprise_centos6_x86_64_3.0.0-786-rel.rpm

      Scenario:
      Initial XDCR test, 5 -> 5 nodes, 1 bucket x 1G x 1KB, DGM, compaction disabled, UniDir

      See attached screenshot for details.
      Please notice that it decreases average throughput from ~300K ops/sec to ~200K ops/sec in this particular scenario.

      The issue happens because of source nodes (downgrading destination nodes to 3.0.0-785 doesn't improve throughput).

      There are gaps in memcached logs as well:
      https://gist.github.com/pavel-paulau/1ab970cce224c382488b

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        Activity

          People

            mikew Mike Wiederhold [X] (Inactive)
            pavelpaulau Pavel Paulau (Inactive)
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            Dates

              Created:
              Updated:
              Resolved:

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