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  1. Couchbase Server
  2. MB-25909

[Backport MB-25878] - GOGC is reset to 0 after offline upgrade on the source node

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • 4.6.4
    • 4.6.0, 4.6.1, 4.6.2, 4.6.3, 5.0.0
    • XDCR
    • Triaged
    • Centos 64-bit
    • Yes

    Description

      Steps:

      • Configure two servers with Couchbase Server 4.1.2
      • Enable unidirectional replication between two nodes
      • Upgrade the source node (rpm -Uv couchbase-server-enterprise-4.6.2-centos7.x86_64.rpm)

      Observed:

      GlobalSettingChangeListener 2017-08-30T13:36:49.422-07:00 [INFO] new Global settings=GoMaxProcs:4, GoGC:0
      		 
      GlobalSettingChangeListener 2017-08-30T13:36:49.423-07:00 [INFO] Successfully changed  GOGC setting from(old) 100 to(New) 0


       curl -s http://Administrator:password@172.23.96.105:8091/settings/replications | python -mjson.tool
      		 
      {
      		 
          "checkpointInterval": 1800,
      		 
          "docBatchSizeKb": 2048,
      		 
          "failureRestartInterval": 10,
      		 
          "goGC": 0,
      		 
          "goMaxProcs": 4,
      		 
          "logLevel": "Info",
      		 
          "optimisticReplicationThreshold": 256,
      		 
          "sourceNozzlePerNode": 2,
      		 
          "statsInterval": 1000,
      		 
          "targetNozzlePerNode": 2,
      		 
          "workerBatchSize": 500
      		 
      }

      And thousands GC events afterwards.

      egrep -o 'NumGC":[0-9]+' goxdcr.log 
      NumGC":3093
      		 
      NumGC":5696
      		 
      NumGC":8315

      Attachments

        1. 172.23.96.100.zip
          8.83 MB
        2. 172.23.96.105.zip
          35.76 MB

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MB-26227 4.6.4 CLONE - GOGC is reset to 0 after offline upgrade on the source node

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          is triggered by

          Bug - A problem which impairs or prevents the functions of the product. MB-25878 GOGC is reset to 0 after offline upgrade on the source node

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-25878 GOGC is reset to 0 after offline upgrade on the source node

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MB-19670 need to add GOGC as a global setting

          • Major - Major loss of function.
          • Closed
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              arunkumar Arunkumar Senthilnathan (Inactive)
              arunkumar Arunkumar Senthilnathan (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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