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    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-35883] Invariant that if replication recovery does not have an initial sync flag set, that it does have a recovery timestamp</title>
                <link>https://jira.mongodb.org/browse/SERVER-35883</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description></description>
                <environment></environment>
        <key id="565217">SERVER-35883</key>
            <summary>Invariant that if replication recovery does not have an initial sync flag set, that it does have a recovery timestamp</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="greg.mckeon@mongodb.com">Gregory McKeon</reporter>
                        <labels>
                            <label>prepare_optional</label>
                    </labels>
                <created>Thu, 28 Jun 2018 16:09:22 +0000</created>
                <updated>Fri, 27 Oct 2023 20:43:21 +0000</updated>
                            <resolved>Thu, 1 Nov 2018 21:21:23 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2049508" author="samy.lanka" created="Thu, 1 Nov 2018 21:21:23 +0000"  >&lt;p&gt;As part of &lt;a href=&quot;https://github.com/mongodb/mongo/commit/1d6087b0314b0201cddf837e7edcf2703464ff73&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this commit&lt;/a&gt;, I added changes to always crash if we replay a prepared transaction in replication recovery when &lt;tt&gt;enableMajorityReadConcern=false&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="2027044" author="samy.lanka" created="Mon, 8 Oct 2018 19:46:39 +0000"  >&lt;p&gt;After talking it through with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=judah.schvimer&quot; class=&quot;user-hover&quot; rel=&quot;judah.schvimer&quot;&gt;judah.schvimer&lt;/a&gt;, we decided that &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=william.schultz&quot; class=&quot;user-hover&quot; rel=&quot;william.schultz&quot;&gt;william.schultz&lt;/a&gt;&apos;s idea makes sense. We&apos;re going to always crash if we replay a prepared transaction in replication recovery when&#160;&lt;tt&gt;enableMajorityReadConcern=false&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="2025627" author="tess.avitabile" created="Fri, 5 Oct 2018 21:22:46 +0000"  >&lt;p&gt;Yes, I believe it will work to crash if we replay a prepared transaction when recovering from an unstable checkpoint. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=william.schultz&quot; class=&quot;user-hover&quot; rel=&quot;william.schultz&quot;&gt;william.schultz&lt;/a&gt; was considering crashing if we replay a prepared transaction in replication recovery when &lt;tt&gt;enableMajorityReadConcern=false&lt;/tt&gt;, even if we are recovering from a stable checkpoint. This is to ensure that you do not restart your server with &lt;tt&gt;enableMajorityReadConcern:false&lt;/tt&gt; when you might need to roll back a &lt;tt&gt;prepareTransaction&lt;/tt&gt; oplog entry.&lt;/p&gt;</comment>
                            <comment id="2025112" author="judah.schvimer" created="Fri, 5 Oct 2018 15:11:22 +0000"  >&lt;p&gt;I don&apos;t think this is possible anymore given the &lt;tt&gt;enableMajorityReadConcern: false&lt;/tt&gt; flag. This however means that startup replication recovery would not always occur from a stable checkpoint. When recovering from an unstable checkpoint though, we can invariant that we do not replay any prepared transactions, and so the recovery should operate identically to 4.0. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tess.avitabile&quot; class=&quot;user-hover&quot; rel=&quot;tess.avitabile&quot;&gt;tess.avitabile&lt;/a&gt;, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=william.schultz&quot; class=&quot;user-hover&quot; rel=&quot;william.schultz&quot;&gt;william.schultz&lt;/a&gt;, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=samy.lanka&quot; class=&quot;user-hover&quot; rel=&quot;samy.lanka&quot;&gt;samy.lanka&lt;/a&gt; for additional thoughts.&lt;/p&gt;</comment>
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