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https://issues.apache.org/jira/browse/ZOOKEEPER-2967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16472554#comment-16472554
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Mauricio Garavaglia commented on ZOOKEEPER-2967:
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This broke the upgrade path between 3.9.11 and 3.9.12, requiring manual
intervention. That needs to be specified in the release notes.
> Add check to validate dataDir and dataLogDir parameters at startup
> ------------------------------------------------------------------
>
> Key: ZOOKEEPER-2967
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2967
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.4.11
> Reporter: Andor Molnar
> Assignee: Mark Fenes
> Priority: Major
> Labels: startup, validation
> Fix For: 3.5.4, 3.6.0, 3.4.12
>
>
> According to -ZOOKEEPER-2960- we should at a startup check to validate that
> dataDir and dataLogDir parameters are set correctly.
> Perhaps we should introduce a check of some kind? If datalogdir is different
> that datadir and snapshots exist in datalogdir we throw an exception and quit.
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