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  1. Couchbase Server
  2. MB-45089

mem_used becomes 0 while deleting 10billion items.

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      1. Create 10B items
      2. Delete 10B items
      Observe that the mem_used it showing as 0B. I observed the cluster when ~8.5 billion items were deleted. Not sure since when mem_used is consuming 0B.

      This seems to be a memory accounting issues. memory that should be freed from some other arena is getting freed from mem_used. I am not quite sure on this though. Attaching the logs for further debugging.

      QE Test

      		 
      guides/gradlew --refresh-dependencies testrunner -P jython=/opt/jython/bin/jython -P "args=-i /tmp/magma_temp_job3.ini -p bucket_storage=${storage},bucket_eviction_policy=fullEviction -t volumetests.Magma.volume.SteadyStateVolume,nodes_init=3,replicas=2,skip_cleanup=True,iterations=10,batch_size=1000,sdk_timeout=60,log_level=debug,infra_log_level=info,rerun=False,skip_cleanup=True,key_size=18,randomize_doc_size=False,randomize_value=True,assert_crashes_on_load=True,step_iterations=5,rollback=False,durability=None,fragmentation=50,rollbacks=0,num_collections=20,num_items=500000000,doc_size=256,pc=10,ramQuota=153600,sdk_client_pool=True,crashes=0 -m rest"

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          Bug - A problem which impairs or prevents the functions of the product. MB-45073 [Magma] - Incorrect mem_used accounting for magma bucket results in OOM crashes for longevity test

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
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              sarath Sarath Lakshman
              ritesh.agarwal Ritesh Agarwal
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