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  1. Couchbase Server
  2. MB-53202

Index rollbackAllToZero messages seen with build 6.6.5-10106

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    • Untriaged
    • 1
    • Unknown

    Description

      Steps to reproduce:

      1. Create 10 buckets 
      2. Create indexes with replicas on each of the 10 buckets.
      3. Run pillowfight to continuously load data.
      4. Run a shell script that runs the request_plus scans continuously.
      5. Make sure that some amount of memcached memory is in swap space. Can be checked by running  

        cat /proc/$(pidof memcached)/status | grep VmSwap

      1. Simulate OOM kill by running the following commands (Pillowfight has to be running on one of the buckets at the very least) 

        echo 1000 > /proc/$(pidof memcached)/oom_score_adj
        		 
        sudo chmod 777 /proc/sysrq-trigger 
        		 
        sudo echo f > /proc/sysrq-trigger   

      1. After auto-failover, perform a full recovery and rebalance in the node.

      RollbackToZero messages

      On 172.23.100.22 node 
       
      		 
      2022-07-31T23:42:45.961-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
      2022-08-01T00:01:11.705-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
      2022-08-01T00:03:39.669-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test1
      		 
      2022-08-01T00:04:20.787-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test2
      		 
      2022-08-01T00:04:21.307-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test3
      		 
       
      		 
       
      		 
      On 172.23.100.19 node
      		 
       
      		 
      2022-07-31T23:42:47.156-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
      2022-08-01T00:01:17.415-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
      2022-08-01T00:03:58.469-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test1
      		 
      2022-08-01T00:04:11.319-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test2
      		 
      2022-08-01T00:10:39.838-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test3

      Rollbacks on test10 can be ignored as a flush of test10 was performed. i.e rollbacks with these timestamps

      172.23.100.19 : index
      		 
      /opt/couchbase/var/lib/couchbase/logs/indexer.log:2022-07-31T23:42:47.156-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
       
      		 
      172.23.100.22 : index
      		 
      /opt/couchbase/var/lib/couchbase/logs/indexer.log:2022-07-31T23:42:45.961-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10

      But test1,test2,test3, and test10 (with the following timestamps) need to be investigated.

      172.23.100.22
      		 
       
      		 
      2022-08-01T00:01:11.705-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10
      		 
       
      		 
      172.23.100.19
      		 
       
      		 
      2022-08-01T00:01:17.415-07:00 [Info] StorageMgr::rollbackAllToZero MAINT_STREAM test10

       

      cbcollect logs - newer

               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.100.15.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.100.16.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.100.17.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.100.19.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.100.22.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659340931/collectinfo-2022-08-01T080212-ns_1%40172.23.121.215.zip

       cbcollect logs  - older

      cbcollect logs: 
       
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.100.15.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.100.16.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.100.17.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.100.19.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.100.22.zip
      		 
               url : https://cb-jira.s3.us-east-2.amazonaws.com/logs/systestmon-1659336774/collectinfo-2022-08-01T065255-ns_1%40172.23.121.215.zip

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. MB-53183 [6.6.5 build 10106] - Secondary Index rollback to zero after KV node auto failover

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. MB-53221 RollbackAll to zero with need an older snapshot error seen in the indexer logs

          • Major - Major loss of function.
          • Resolved
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              varun.velamuri Varun Velamuri
              pavan.pb Pavan PB
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              Dates

                Created:
                Updated:
                Resolved:

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