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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-70607] Index build commit not following copy-on-write semantics</title>
                <link>https://jira.mongodb.org/browse/SERVER-70607</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When committing an index build, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a14665e02e841e43d2bc057e004aeacf0c01c719/src/mongo/db/catalog/index_build_block.cpp#L289&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;we set the commit timestamp on the &lt;tt&gt;IndexCatalogEntry&lt;/tt&gt;&lt;/a&gt;. However, we are operating on a shallow copy and thus we are bypassing the copy-on-write semantics of the collection catalog.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2160372">SERVER-70607</key>
            <summary>Index build commit not following copy-on-write semantics</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="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="gregory.noma@mongodb.com">Gregory Noma</reporter>
                        <labels>
                    </labels>
                <created>Mon, 17 Oct 2022 14:29:56 +0000</created>
                <updated>Wed, 1 Feb 2023 21:08:10 +0000</updated>
                            <resolved>Wed, 1 Feb 2023 21:08:10 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="5160334" author="henrik.edin" created="Wed, 1 Feb 2023 21:08:10 +0000"  >&lt;p&gt;This will be fixed when we remove minVisibleSnapshot from indexes&lt;/p&gt;</comment>
                            <comment id="4907049" author="gregory.noma" created="Mon, 17 Oct 2022 14:38:10 +0000"  >&lt;p&gt;There is a &lt;a href=&quot;https://github.com/mongodb/mongo/blob/a14665e02e841e43d2bc057e004aeacf0c01c719/src/mongo/db/catalog/index_build_block.cpp#L274-L276&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;comment&lt;/a&gt; stating that no one can read the index entry before setting the timestamp because we are still holding a MODE_X lock on the collection, but perhaps with lock-free reads this is no longer the case.&lt;/p&gt;</comment>
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