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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-71006] Small window of inconsistency for reads after turning index to multikey</title>
                <link>https://jira.mongodb.org/browse/SERVER-71006</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When turning an index into multikey we flip the in-memory state in an onCommit handler. This means there is a window between the WT transaction committing and updating the in-memory state where a reader can observe the data but not seeing the index as multi-key.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2172392">SERVER-71006</key>
            <summary>Small window of inconsistency for reads after turning index to multikey</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Tue, 1 Nov 2022 21:35:34 +0000</created>
                <updated>Sun, 29 Oct 2023 21:31:11 +0000</updated>
                            <resolved>Tue, 8 Nov 2022 21:29:00 +0000</resolved>
                                                    <fixVersion>5.0.15</fixVersion>
                    <fixVersion>6.0.4</fixVersion>
                    <fixVersion>6.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5101196" author="xgen-internal-githook" created="Mon, 9 Jan 2023 22:21:14 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71006&quot; title=&quot;Small window of inconsistency for reads after turning index to multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71006&quot;&gt;&lt;del&gt;SERVER-71006&lt;/del&gt;&lt;/a&gt; Fix race where a reader does not observe a concurrent multikey write&lt;/p&gt;

&lt;p&gt;(cherry picked from commit cf648f7bc75f11fa316f6e9fbb737cf9763742c3)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5d4498a56e4ffdef626e1bf855b8626988ecaebe&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5d4498a56e4ffdef626e1bf855b8626988ecaebe&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5101182" author="xgen-internal-githook" created="Mon, 9 Jan 2023 22:13:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71006&quot; title=&quot;Small window of inconsistency for reads after turning index to multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71006&quot;&gt;&lt;del&gt;SERVER-71006&lt;/del&gt;&lt;/a&gt; Fix race where a reader does not observe a concurrent multikey write&lt;/p&gt;

&lt;p&gt;(cherry picked from commit cf648f7bc75f11fa316f6e9fbb737cf9763742c3)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d7f52aa145180f3b86acd91223a2a3c4abfbff2b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d7f52aa145180f3b86acd91223a2a3c4abfbff2b&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4964789" author="xgen-internal-githook" created="Tue, 8 Nov 2022 20:34:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71006&quot; title=&quot;Small window of inconsistency for reads after turning index to multikey&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71006&quot;&gt;&lt;del&gt;SERVER-71006&lt;/del&gt;&lt;/a&gt; Fix race where a reader does not observe a concurrent multikey write&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cf648f7bc75f11fa316f6e9fbb737cf9763742c3&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cf648f7bc75f11fa316f6e9fbb737cf9763742c3&lt;/a&gt;&lt;/p&gt;</comment>
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