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    <description>This file is an XML representation of an issue</description>
    <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-66774] Insertion order of capped collections may not be preserved after initial sync</title>
                <link>https://jira.mongodb.org/browse/SERVER-66774</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This is a very corner case. But since we ignore duplicateKey during initial sync and during oplog application, I think the following sequence is possible:&lt;/p&gt;
&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Sync Source&lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;Syncing nodes&lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Insert 1, 2:&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;1, 2&amp;#93;&lt;/span&gt;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Clone 1, 2:&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;1, 2&amp;#93;&lt;/span&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Rollover/delete 1:&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;2&amp;#93;&lt;/span&gt;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Insert 1, 3:&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;2, 1, 3&amp;#93;&lt;/span&gt;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Clone 1, 3&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;1, 2, 3&amp;#93;&lt;/span&gt;&#160;because duplicateKey on (1) is ignored&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Start oplog application&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Apply delete(1), insert(1), insert(3):&lt;br/&gt;
&lt;span class=&quot;error&quot;&gt;&amp;#91;2, 3, 1&amp;#93;&lt;/span&gt;&#160;because duplicateKey on (3) is ignored&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;/div&gt;






&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2055371">SERVER-66774</key>
            <summary>Insertion order of capped collections may not be preserved after initial sync</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Wed, 25 May 2022 21:22:08 +0000</created>
                <updated>Tue, 6 Dec 2022 00:05:04 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>7</watches>
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            <issuekey id="2055372">SERVER-66775</issuekey>
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