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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-7311] repl set rollback and earlycommits and journaling issue</title>
                <link>https://jira.mongodb.org/browse/SERVER-7311</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;on a replica set rollback, the rollback and the truncation of the oplog need to be one transaction.  if there are early commits (commitIfNeeded) this would be violated and cause an issue potentially where a document which was to be rollback in rollback attempt #1 is later not there but in the oplog. &lt;/p&gt;

&lt;p&gt;if after restart the second rollback is to the same point, it may be that everything is fine.  however that is not certain.  my guess is in practice it would be quite hard to get this edge case to happen. that said, it seems wrong though and keeping the contract that the oplog and datafiles are identical makes reasoning about correctness much, much easier regardless.&lt;/p&gt;</description>
                <environment></environment>
        <key id="52742">SERVER-7311</key>
            <summary>repl set rollback and earlycommits and journaling issue</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="dwight@mongodb.com">Dwight Merriman</reporter>
                        <labels>
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                <created>Wed, 10 Oct 2012 00:43:11 +0000</created>
                <updated>Tue, 6 Dec 2022 05:28:44 +0000</updated>
                            <resolved>Thu, 14 Jun 2018 19:53:18 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1921092" author="spencer" created="Thu, 14 Jun 2018 19:53:18 +0000"  >&lt;p&gt;Rollback has been majorly rewritten since this ticket was filed, plus the journaling behavior on WT is very different than it was on MMAP&lt;/p&gt;</comment>
                            <comment id="173177" author="dwight_10gen" created="Wed, 10 Oct 2012 00:44:49 +0000"  >&lt;p&gt;one solution perhaps: if we early commit, we truncate the oplog (precommit finalization) to our current location first. does that solve?&lt;/p&gt;</comment>
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