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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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<item>
            <title>[SERVER-40706] AutoGetCollectionForRead invariant should permit kNoOverlap read source</title>
                <link>https://jira.mongodb.org/browse/SERVER-40706</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The AutoGetCollectionForRead constructor has an &lt;a href=&quot;https://github.com/mongodb/mongo/blob/79d96979125e9aaa53774a4e1767b1eb231031a9/src/mongo/db/db_raii.cpp#L164-L165&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;invariant&lt;/a&gt; ensuring that either we are reading from the lastApplied timestamp or we have a kMajorityCommitted read source. This invariant can only be reached if there are &lt;a href=&quot;https://github.com/mongodb/mongo/blob/79d96979125e9aaa53774a4e1767b1eb231031a9/src/mongo/db/db_raii.cpp#L160-L162&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;conflicting catalog changes&lt;/a&gt; on the collection that is being read from. Speculative majority change stream reads utilize the kNoOverlap read source, so they will not choose to explicitly read from the lastApplied timestamp, since the no-overlap read source already handles the selection of a proper read timestamp. If there are conflicting catalog changes, though, they will violate the invariant since they are not using a kMajorityCommitted read source. We should extend the invariant to permit the kNoOverlap read source.&lt;/p&gt;</description>
                <environment></environment>
        <key id="740821">SERVER-40706</key>
            <summary>AutoGetCollectionForRead invariant should permit kNoOverlap read source</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="william.schultz@mongodb.com">William Schultz</assignee>
                                    <reporter username="william.schultz@mongodb.com">William Schultz</reporter>
                        <labels>
                    </labels>
                <created>Thu, 18 Apr 2019 01:05:12 +0000</created>
                <updated>Sun, 29 Oct 2023 22:21:53 +0000</updated>
                            <resolved>Tue, 23 Apr 2019 18:31:34 +0000</resolved>
                                                    <fixVersion>4.1.11</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="2222247" author="xgen-internal-githook" created="Tue, 23 Apr 2019 18:31:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;william.schultz@mongodb.com&apos;, &apos;name&apos;: &apos;William Schultz&apos;, &apos;username&apos;: &apos;will62794&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-40706&quot; title=&quot;AutoGetCollectionForRead invariant should permit kNoOverlap read source&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-40706&quot;&gt;&lt;del&gt;SERVER-40706&lt;/del&gt;&lt;/a&gt; AutoGetCollectionForRead invariant should permit kNoOverlap read source when there are conflicting catalog changes&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/75aac812bfce0419d68c65d48233f94c06aaeafd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/75aac812bfce0419d68c65d48233f94c06aaeafd&lt;/a&gt;&lt;/p&gt;</comment>
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