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  1. Couchbase Server
  2. MB-52169

Memcached crashed during rebalance_in + compaction in parallel

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Details

    • Untriaged
    • Centos 64-bit
    • 1
    • Yes

    Description

      Build: 7.1.1-3056-enterprise

      Scenario:

      • 2 node KV cluster
      • Couchbase bucket with 20K items as initial load
      • Add new node (.251) and start rebalance_in + compaction running in parallel

      Observation:

      Rebalance failed due to the memcached crash on the new node (.251)

      memcached's backtrace -> memcached_bt.log

      TAF test:

      guides/gradlew --refresh-dependencies testrunner -P jython=/opt/jython/bin/jython -P 'args=-i /tmp/testexec.9407.ini durability=MAJORITY,threads_to_use=10,sdk_timeout=60,GROUP=P1,upgrade_version=7.1.1-3056 -t bucket_param_tests.autocompaction.AutoCompactionTests.rebalance_in_with_auto_DB_compaction,key=test_collections,num_items=20000,autocompaction_value=70,nodes_init=2,nodes_in=1,replicas=1,GROUP=P1'

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-51606 SyncWrites requiring persistence may get stuck during rebalance if persisted while vBucket is dead

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

          Bug - A problem which impairs or prevents the functions of the product. MB-52170 queuedSeqnoAck: invariant failed

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          For Gerrit Dashboard: MB-52169
          # Subject Branch Project Status CR V
          175268,3 Revert initial fix for MB-51606 neo kv_engine Status: MERGED +2 +1

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              ashwin.govindarajulu Ashwin Govindarajulu
              ashwin.govindarajulu Ashwin Govindarajulu
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              Dates

                Created:
                Updated:
                Resolved:

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