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    <link>https://jira.mongodb.org</link>
    <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-55012] renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict</title>
                <link>https://jira.mongodb.org/browse/SERVER-55012</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/a6b5cdc3fa1722ea241a3d1ff9575a82e4a46081/src/mongo/db/catalog/rename_collection.cpp#L646-L649&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;renameBetweenDBs&lt;/a&gt;&#160;has WriteConflictException handling that repositions (using seekExact) the cursor on the source collection if the RecordID of the beginning of the batch does not match the last observed RecordId. This is correct in most cases, but not if the writeConflict is observed on the first document of the batch.&lt;/p&gt;

&lt;p&gt;In this case the cursor on the source collection will invalidated, but not repositioned. Subsequent calls to next() will start over from the beginning. This can result in erroneously copying the same data from a source collection into the destination.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1641371">SERVER-55012</key>
            <summary>renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict</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="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Fri, 5 Mar 2021 21:50:02 +0000</created>
                <updated>Sun, 29 Oct 2023 21:56:36 +0000</updated>
                            <resolved>Mon, 22 Mar 2021 20:58:07 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                    <fixVersion>4.4.7</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3763809" author="xgen-internal-githook" created="Mon, 10 May 2021 15:00:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55012&quot; title=&quot;renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55012&quot;&gt;&lt;del&gt;SERVER-55012&lt;/del&gt;&lt;/a&gt; renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fd0d1ee222726959b7b211c614e92be903b13a54)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/06447e6ff8e2cad7d5729d377c0cc2c6db8de898&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/06447e6ff8e2cad7d5729d377c0cc2c6db8de898&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3677708" author="xgen-internal-githook" created="Mon, 22 Mar 2021 20:43:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55012&quot; title=&quot;renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55012&quot;&gt;&lt;del&gt;SERVER-55012&lt;/del&gt;&lt;/a&gt; renameBetweenDBs needs to always reposition its cursor in the event of a writeConflict&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fd0d1ee222726959b7b211c614e92be903b13a54&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fd0d1ee222726959b7b211c614e92be903b13a54&lt;/a&gt;&lt;/p&gt;</comment>
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