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  1. Couchbase Server
  2. MB-62736

Observing rollback to 0 during data ingestion just after scaling operation. Also seen during idle cluster state.

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      2 rollbacks are seen:

      2024-07-15T18:54:27.278+00:00 INFO CBAS.metadata.MaintainDcpCallbackFactory [Executor-183:63a8f68a7662e9f5fe0d3718baa49ecb] {"dir" : "/var/cb-cache/@analytics/v_iodevice_15/storage/partition_127/Default/Default/remote_z6OiJ_volCollection_2_jstyi/0/remote_z6OiJ_volCollection_2_jstyi", "memory" : [{"state":"INACTIVE", "writers":0, "readers":0, "pendingFlushes":0, "id":"[24,24]", "index":{"class": "BTree", "file": "storage/partition_127/Default/Default/remote_z6OiJ_volCollection_2_jstyi/0/remote_z6OiJ_volCollection_2_jstyi_virtual_0"}}, {"state":"INACTIVE", "writers":0, "readers":0, "pendingFlushes":0, "id":"[25,25]", "index":{"class": "BTree", "file": "storage/partition_127/Default/Default/remote_z6OiJ_volCollection_2_jstyi/0/remote_z6OiJ_volCollection_2_jstyi_virtual_1"}}], "disk" : 2, "num-scheduled-flushes":0, "current-memory-component":0}: full rollback. Nullifying dcp state
      		 
       
      		 
       
      		 
      2024-07-15T21:22:42.021+00:00 INFO CBAS.metadata.MaintainDcpCallbackFactory [Executor-1734:63a8f68a7662e9f5fe0d3718baa49ecb] {"dir" : "/var/cb-cache/@analytics/v_iodevice_8/storage/partition_120/Default/Default/remote_z6OiJ_volCollection_12_kpfxu/0/remote_z6OiJ_volCollection_12_kpfxu", "memory" : [{"state":"INACTIVE", "writers":0, "readers":0, "pendingFlushes":0, "id":"[239,239]", "index":{"class": "BTree", "file": "storage/partition_120/Default/Default/remote_z6OiJ_volCollection_12_kpfxu/0/remote_z6OiJ_volCollection_12_kpfxu_virtual_0"}}, {"state":"INACTIVE", "writers":0, "readers":0, "pendingFlushes":0, "id":"[240,240]", "index":{"class": "BTree", "file": "storage/partition_120/Default/Default/remote_z6OiJ_volCollection_12_kpfxu/0/remote_z6OiJ_volCollection_12_kpfxu_virtual_1"}}], "disk" : 6, "num-scheduled-flushes":0, "current-memory-component":0}: full rollback. Nullifying dcp state

      1. At 2024-07-15T18:54:27 after scaling the nodes from 2 to 16
      2. At 2024-07-15T21:22:42 while ingestion was progressing smoothly but sudden rollback to 0

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          Bug - A problem which impairs or prevents the functions of the product. MB-62723 [System Test] java.lang.IllegalStateException: Size is different exceptions seen

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