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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-81811] [CQF] Shard key with dotted path incorrectly populated in optimizer metadata</title>
                <link>https://jira.mongodb.org/browse/SERVER-81811</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/10gen/mongo/blob/da394eee5c65f47c2f0044cff229754d951e4cb6/src/mongo/db/pipeline/abt/utils.cpp#L108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;function&lt;/a&gt; which translates a string representing a path into an ABT iterates the string from left to right, when it should go right to left. This causes incorrect plans to be generated.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2457769">SERVER-81811</key>
            <summary>[CQF] Shard key with dotted path incorrectly populated in optimizer metadata</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="ben.shteinfeld@mongodb.com">Ben Shteinfeld</assignee>
                                    <reporter username="ben.shteinfeld@mongodb.com">Ben Shteinfeld</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 Oct 2023 18:37:23 +0000</created>
                <updated>Sun, 29 Oct 2023 21:15:44 +0000</updated>
                            <resolved>Wed, 4 Oct 2023 15:03:48 +0000</resolved>
                                                    <fixVersion>7.2.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="5752158" author="xgen-internal-githook" created="Wed, 4 Oct 2023 14:44:54 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Ben Shteinfeld&apos;, &apos;email&apos;: &apos;ben.shteinfeld@mongodb.com&apos;, &apos;username&apos;: &apos;bshteinfeld&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-81811&quot; title=&quot;[CQF] Shard key with dotted path incorrectly populated in optimizer metadata&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-81811&quot;&gt;&lt;del&gt;SERVER-81811&lt;/del&gt;&lt;/a&gt; &lt;span class=&quot;error&quot;&gt;&amp;#91;CQF&amp;#93;&lt;/span&gt; Fix population of dotted shard key in optimizer metadata.&lt;/p&gt;

&lt;p&gt;We were incorrectly translating the shard key into an ABT by iterating&lt;br/&gt;
over the string from left to right, rather than right to left. This is&lt;br/&gt;
because we build ABTs bottom up and must start with the last component&lt;br/&gt;
of a path.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/22cd6188278b491831209c01e15a70015880e95d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/22cd6188278b491831209c01e15a70015880e95d&lt;/a&gt;&lt;/p&gt;</comment>
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