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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-43356] May fail to recover after a rollbackViaRefetch if sync source no longer has required opTime</title>
                <link>https://jira.mongodb.org/browse/SERVER-43356</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order to reach a consistent state after doing a rollbackViaRefetch, the rollback node sets its own &lt;a href=&quot;https://github.com/mongodb/mongo/blob/23239fdc63833126740f092e6a2f87586762a443/src/mongo/db/repl/rs_rollback.cpp#L650&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;minValid&lt;/a&gt; to the top of sync source&apos;s oplog at the start of recovery. It therefore must be able to replicate and apply up to that lastApplied to complete the recovery. However, if at some point mid-recovery the necessary oplog entries are no longer in the set (either due to a rollback or an unclean shutdown), the rollback node will end up in an unrecoverable state as it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/23239fdc63833126740f092e6a2f87586762a443/src/mongo/db/repl/sync_source_resolver.cpp#L466-L472&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;may only choose a sync source that has them&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="930056">SERVER-43356</key>
            <summary>May fail to recover after a rollbackViaRefetch if sync source no longer has required opTime</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="vesselina.ratcheva@mongodb.com">Vesselina Ratcheva</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Sep 2019 19:30:54 +0000</created>
                <updated>Tue, 6 Dec 2022 02:47:57 +0000</updated>
                            <resolved>Fri, 3 Jan 2020 20:15:02 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2440851" author="william.schultz" created="Mon, 30 Sep 2019 17:31:58 +0000"  >&lt;p&gt;For what it&apos;s worth, &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-38925&quot; title=&quot;Rollback via refetch can cause _id duplication when enableMajorityReadConcern:false&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-38925&quot;&gt;&lt;del&gt;SERVER-38925&lt;/del&gt;&lt;/a&gt; was a serious bug that was specifically caught by the rollback_fuzzer_unclean_shutdowns suite when EMRC=false. I believe that it was also exposed by the clean shutdowns suite, but it was made more likely with unclean shutdowns. We might want to consider that before completely removing this suite on EMRC=false.&lt;/p&gt;</comment>
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            <issuekey id="963052">SERVER-43867</issuekey>
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            <issuekey id="669232">SERVER-38925</issuekey>
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