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Posted to issues@ignite.apache.org by "Ilya Kasnacheev (Jira)" <ji...@apache.org> on 2021/01/11 16:08:00 UTC

[jira] [Created] (IGNITE-13976) WAL disable/enable with node restarts results in mismatching state, data loss

Ilya Kasnacheev created IGNITE-13976:
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             Summary: WAL disable/enable with node restarts results in mismatching state, data loss
                 Key: IGNITE-13976
                 URL: https://issues.apache.org/jira/browse/IGNITE-13976
             Project: Ignite
          Issue Type: Bug
          Components: cache
    Affects Versions: 2.9.1
            Reporter: Ilya Kasnacheev
            Assignee: Ilya Kasnacheev


If you try to enable/disable WAL on unstable topology, you will get to state when WAL status is undefined, nodes might have different wall status and the only way to fix it is to restart the cluster, which will lead to data loss because ignite removes data if WAL is disabled on restart.

See the attached reproducer.



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