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  1. Couchbase Server
  2. MB-35287

[Durability]: Rebalance In 2 nodes failed. KV disconnects ns_server "Trying to handle an unknown response DCP_COMMIT, disconnecting" [ETA:29/7/19]

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    • Triaged
    • Unknown
    • KV-Engine MH Beta part 2

    Description

      Steps to reproduce

      1. Create a 2 node cluster - Both KV nodes
      Rebalance Overview

      +----------------+----------------------------+--------------+
      		 
      | Nodes          | Services                   | Status       |
      		 
      +----------------+----------------------------+--------------+
      		 
      | 172.23.104.202 | [u'index', u'kv', u'n1ql'] | Cluster node |
      		 
      | 172.23.104.203 | None                       | <--- IN ---  |
      		 
      +----------------+----------------------------+--------------+

      2. Create a default bucket with replica=1
      3. Create 50000 docs with durability=Majority

      Bucket statistics

      +---------+---------+----------+-----+-------+------------+-----------+-----------+
      		 
      | Bucket  | Type    | Replicas | TTL | Items | RAM Quota  | RAM Used  | Disk Used |
      		 
      +---------+---------+----------+-----+-------+------------+-----------+-----------+
      		 
      | default | membase | 2        | 0   | 50000 | 3961520128 | 154375040 | 265460572 |
      		 
      +---------+---------+----------+-----+-------+------------+-----------+-----------+

      4. Rebalance In 2 new nodes and in parallel start another load of new 50k docs with durability=majority.

      Rebalance Overview

      +----------------+----------------------------+--------------+
      		 
      | Nodes          | Services                   | Status       |
      		 
      +----------------+----------------------------+--------------+
      		 
      | 172.23.104.203 | [u'kv']                    | Cluster node |
      		 
      | 172.23.104.202 | [u'index', u'kv', u'n1ql'] | Cluster node |
      		 
      | 172.23.104.208 | None                       | <--- IN ---  |
      		 
      | 172.23.104.211 | None                       | <--- IN ---  |
      		 
      +----------------+----------------------------+--------------+

      5. Rebalance failed

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          Bug - A problem which impairs or prevents the functions of the product. MB-35289 [Durability]: Rebalance In 2 nodes failed - "time_purge_hook: tombstone found with an expiry time of 0"

          • Major - Major loss of function.
          • Closed
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              ritesh.agarwal Ritesh Agarwal
              ritesh.agarwal Ritesh Agarwal
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                Updated:
                Resolved:

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