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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-37172] rollbackViaRefetch should not update documents in capped collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-37172</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In rollbackViaRefetch, when we roll back changes to a document and the document exists on the source, we perform an &lt;a href=&quot;https://github.com/mongodb/mongo/blob/6d34459efdf6861ab6967791193ac1108a4fe6b4/src/mongo/db/repl/rs_rollback.cpp#L1319&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;update&lt;/a&gt; on the document. This is problematic for capped collections, since &lt;a href=&quot;https://github.com/mongodb/mongo/blob/12dba1e5b8c5ec7532da1bfa2e05c56f021d7f06/src/mongo/db/catalog/collection_impl.cpp#L633&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;updates in capped collections must not change the size of the document&lt;/a&gt;. For capped collections, we should instead truncate the collection (like we do for &lt;a href=&quot;https://github.com/mongodb/mongo/blob/12dba1e5b8c5ec7532da1bfa2e05c56f021d7f06/src/mongo/db/repl/rs_rollback.cpp#L1341&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;deletes&lt;/a&gt;) and then insert the source&apos;s version of the document.&lt;/p&gt;</description>
                <environment></environment>
        <key id="606116">SERVER-37172</key>
            <summary>rollbackViaRefetch should not update documents in capped collections</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                            <label>replication-rollbackviarefetch</label>
                    </labels>
                <created>Mon, 17 Sep 2018 19:08:19 +0000</created>
                <updated>Tue, 6 Dec 2022 03:18:18 +0000</updated>
                            <resolved>Wed, 15 Jan 2020 17:54:50 +0000</resolved>
                                                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="2732226" author="tess.avitabile" created="Wed, 15 Jan 2020 17:54:50 +0000"  >&lt;p&gt;We are not fixing bugs where rollbackViaRefetch experiences and unrecoverable failure.&lt;/p&gt;</comment>
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