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https://issues.apache.org/jira/browse/IGNITE-13976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17265801#comment-17265801
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Anton Vinogradov commented on IGNITE-13976:
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[~ilyak], thank you for pointing this.
Unfortunately, I'm not ready to provide you the answer without deep
investigation, this feature was implemented a long time ago.
What's the real priority of this issue? Is it just "nice to have" or we have a
real customer affected?
> 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
> Priority: Major
>
> 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 reproducer in PR.
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