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https://issues.apache.org/jira/browse/ZOOKEEPER-1967?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17578166#comment-17578166
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Alexander Shraer commented on ZOOKEEPER-1967:
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Hi [~makre], this does sound bad, would you like to contribute a fix ? It
should probably be a different Jira unless you'd like to get rid of this file.
> Eliminate the temp dynamic config file, find last proposed config in
> transaction log.
> -------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-1967
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1967
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum, server
> Reporter: Alexander Shraer
> Priority: Major
>
> The .next temporary config file is created when a server acks a reconfig
> proposal.
> During reconfig commit this file becomes the permanent dynamic config file.
> This temp file is read (if exists) during server boot to determine whether
> there is a reconfig potentially in progress.
> This info is also available in the transaction log, since reconfig is a
> transaction. Initially I chose not to take this information from the
> transaction log, mainly for simplicity, since I believed that we need the
> last proposed reconfig info before we're processing the transaction log (for
> example, if we'd like to contact new config servers during FLE - this is
> discussed in ZOOKEEPER-1807).
> It would be useful to revisit this issue and check whether we could eliminate
> the temporary .next dynamic config file, finding the last proposed reconfig
> in the the transaction log.
> Note that a bulk of the work here will be modifying ReconfigRecoveryTest,
> which uses .next files to start a server in a state where it thinks it
> crashed in a middle of a reconfig.
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