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Posted to issues@zookeeper.apache.org by "Mohammad Arshad (Jira)" <ji...@apache.org> on 2021/03/31 21:24:00 UTC
[jira] [Resolved] (ZOOKEEPER-4269) acceptedEpoch.tmp rename failure
will cause server startup error
[ https://issues.apache.org/jira/browse/ZOOKEEPER-4269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mohammad Arshad resolved ZOOKEEPER-4269.
----------------------------------------
Resolution: Fixed
Issue resolved by pull request 1668
[https://github.com/apache/zookeeper/pull/1668]
> acceptedEpoch.tmp rename failure will cause server startup error
> ----------------------------------------------------------------
>
> Key: ZOOKEEPER-4269
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4269
> Project: ZooKeeper
> Issue Type: Bug
> Reporter: Mohammad Arshad
> Assignee: Mohammad Arshad
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.8.0, 3.7.1, 3.6.3
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> accepted epoch is first written to temporary file acceptedEpoch.tmp then this file is renamed to acceptedEpoch.
> Failure, either because of exception or power-off, in renaming the acceptedEpoch.tmp file will cause server startup error with message "The current epoch, x, is older than the last zxid y"
> To handle this scenario we should read accepted epoch from this temp file as well.
> For more context, refer https://github.com/apache/zookeeper/pull/1109
>
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