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        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-24392] Invariant in expression::isSubsetOf() is invalid</title>
                <link>https://jira.mongodb.org/browse/SERVER-24392</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;tt&gt;expression::isSubsetOf()&lt;/tt&gt; uses an invariant to check that either &lt;tt&gt;lhs&lt;/tt&gt; and &lt;tt&gt;rhs&lt;/tt&gt; have the same collator, or &lt;tt&gt;lhs&lt;/tt&gt; does not contain any string comparison, so that it is safe to compare &lt;tt&gt;lhs&lt;/tt&gt; and &lt;tt&gt;rhs&lt;/tt&gt; using either collator. This is expected to be the case when &lt;tt&gt;isSubsetOf()&lt;/tt&gt; is called from index selection because an index will only be selected if the index and the query have the same collator, or the query does not contain string comparison. However, &lt;tt&gt;PlanCacheIndexabilityState::processPartialIndex()&lt;/tt&gt; calls &lt;tt&gt;isSubsetOf()&lt;/tt&gt; for every partial index, regardless of whether it would be chosen by index selection. Instead of using an invariant to test that either &lt;tt&gt;lhs&lt;/tt&gt; and &lt;tt&gt;rhs&lt;/tt&gt; have the same collator or &lt;tt&gt;lhs&lt;/tt&gt; does not contain string comparison, &lt;tt&gt;isSubsetOf()&lt;/tt&gt; should return false if this does not hold.&lt;/p&gt;</description>
                <environment></environment>
        <key id="291312">SERVER-24392</key>
            <summary>Invariant in expression::isSubsetOf() is invalid</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="9">Done</resolution>
                                        <assignee username="tess.avitabile@mongodb.com">Tess Avitabile</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                    </labels>
                <created>Fri, 3 Jun 2016 14:41:02 +0000</created>
                <updated>Mon, 6 Jun 2016 21:16:30 +0000</updated>
                            <resolved>Fri, 3 Jun 2016 21:01:03 +0000</resolved>
                                                    <fixVersion>3.3.8</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1284025" author="xgen-internal-githook" created="Fri, 3 Jun 2016 21:00:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tessavitabile&apos;, u&apos;name&apos;: u&apos;Tess Avitabile&apos;, u&apos;email&apos;: u&apos;tess.avitabile@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-24392&quot; title=&quot;Invariant in expression::isSubsetOf() is invalid&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-24392&quot;&gt;&lt;del&gt;SERVER-24392&lt;/del&gt;&lt;/a&gt; Remove invalid invariant in expression::isSubsetOf()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/10e662cad7fe15581c6c499b934b7d4fd3a1e83d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/10e662cad7fe15581c6c499b934b7d4fd3a1e83d&lt;/a&gt;&lt;/p&gt;</comment>
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