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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-56833] Invariant failure in WiredTigerIndexUnique::_keyExists</title>
                <link>https://jira.mongodb.org/browse/SERVER-56833</link>
                <project id="10000" key="SERVER">Core Server</project>
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        <key id="1710417">SERVER-56833</key>
            <summary>Invariant failure in WiredTigerIndexUnique::_keyExists</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="3">Duplicate</resolution>
                                        <assignee username="pavithra.vetriselvan@mongodb.com">Pavithra Vetriselvan</assignee>
                                    <reporter username="dmitry.agranat@mongodb.com">Dmitry Agranat</reporter>
                        <labels>
                            <label>Atlas_Failure_Analysis</label>
                    </labels>
                <created>Tue, 11 May 2021 08:49:49 +0000</created>
                <updated>Fri, 2 Jul 2021 18:19:33 +0000</updated>
                            <resolved>Fri, 2 Jul 2021 18:19:32 +0000</resolved>
                                    <version>4.4.5</version>
                                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="3914468" author="pavithra.vetriselvan" created="Fri, 2 Jul 2021 14:16:14 +0000"  >&lt;p&gt;I&apos;m fairly confident that &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-58183&quot; title=&quot;_applyPrepareTransaction does not ensure prepareConflictBehavior is kIgnoreConflictAcceptWrites on retry attempts&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-58183&quot;&gt;&lt;del&gt;SERVER-58183&lt;/del&gt;&lt;/a&gt; is the issue we&apos;re seeing here, so I&apos;m going to mark this as a duplicate of the 4.4 backport of that ticket. Please see &lt;a href=&quot;https://jira.mongodb.org/browse/BF-20067?focusedCommentId=3910096&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-3910096&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;this&lt;/a&gt; comment on BF-20067 for an in-depth analysis.&lt;/p&gt;</comment>
                            <comment id="3910533" author="pavithra.vetriselvan" created="Wed, 30 Jun 2021 17:33:21 +0000"  >&lt;p&gt;Based on the stack trace, this is probably a dupe of BF-20067 as Louis mentioned.&lt;/p&gt;

&lt;p&gt;We unfortunately don&apos;t have level 4 debug logging for transactions, so we can&apos;t confirm that we restarted a transaction while applying the prepare. However, from the stack trace we can clearly see that we&apos;re hitting a prepare conflict from &lt;tt&gt;_applyOperationsForTransaction&lt;/tt&gt;, which is the same symptom as BF-20067.&lt;/p&gt;
</comment>
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