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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-74193] Sharding index catalog replace is not idempotent and observers can be executed on rollback</title>
                <link>https://jira.mongodb.org/browse/SERVER-74193</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Oplog entries can be re-applied during a rollback, which means that functions related to sharding&apos;s index catalog must be idempotent, and most check the latest index version before doing anything. &lt;/p&gt;

&lt;p&gt;Most functions have this check, except &lt;a href=&quot;https://github.com/10gen/mongo/blob/6a07b9f9e1ece0678a15da991064bb10a1685dff/src/mongo/db/s/global_index_ddl_util.cpp#L314&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replace&lt;/a&gt;. The purpose of this ticket is to add the check for replace.&lt;/p&gt;

&lt;p&gt;Additionally, the shard server op observer in-memory changes &lt;a href=&quot;https://github.com/10gen/mongo/blob/25506fedbde7a4dd93d3750a8a0f3e1dd33139c2/src/mongo/db/s/shard_server_op_observer.cpp#L534-L632&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;for the index catalog&lt;/a&gt; currently can be executed during recovery, which makes it hard to reason about the observers actions overall. We could add a check to prevent them doing anything if we are in recovery, and let the sharding recovery service &lt;a href=&quot;https://github.com/10gen/mongo/blob/25506fedbde7a4dd93d3750a8a0f3e1dd33139c2/src/mongo/db/s/sharding_recovery_service.cpp#L561&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;to handle the in-memory state&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2269594">SERVER-74193</key>
            <summary>Sharding index catalog replace is not idempotent and observers can be executed on rollback</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="13201">Fixed</resolution>
                                        <assignee username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                            <label>PM-2583-Milestone-3</label>
                    </labels>
                <created>Mon, 20 Feb 2023 13:23:33 +0000</created>
                <updated>Sun, 29 Oct 2023 21:25:59 +0000</updated>
                            <resolved>Wed, 22 Feb 2023 09:44:56 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5218480" author="xgen-internal-githook" created="Tue, 21 Feb 2023 21:24:01 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Marcos Jos&#233; Grillo Ramirez&apos;, &apos;email&apos;: &apos;marcos.grillo@mongodb.com&apos;, &apos;username&apos;: &apos;m4nti5&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-74193&quot; title=&quot;Sharding index catalog replace is not idempotent and observers can be executed on rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-74193&quot;&gt;&lt;del&gt;SERVER-74193&lt;/del&gt;&lt;/a&gt; Make replaceCollectionGlobalIndexes idempotent&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9343847b0dd91814eab8241aa849704bf4bbda0a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9343847b0dd91814eab8241aa849704bf4bbda0a&lt;/a&gt;&lt;/p&gt;</comment>
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