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    <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-79549] Audit and perhaps consolidate the multiple implementations of ChunkRange::containsKey()</title>
                <link>https://jira.mongodb.org/browse/SERVER-79549</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The changes from &lt;a href=&quot;https://github.com/mongodb/mongo/commit/b8e050ad94a6a584a15df5744c6ae59d216b42ac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;b8e050a&lt;/a&gt; as part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67529&quot; title=&quot;Resharding silently skips documents with all MaxKey values for their fields under the new shard key pattern&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67529&quot;&gt;&lt;del&gt;SERVER-67529&lt;/del&gt;&lt;/a&gt; changed the implementation of ChunkRange::containsKey() to support shard key values of the form {sk: MaxKey}. However, after some code inspection, it appears there are multiple functions defined separately from ChunkRange for comparing shard key values and are no longer consistent with the new definition of ChunkRange::containsKey(). Some examples of these other function definitions include:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/5174bb20659ada0b141ba929cc96fd3164fa7628/src/mongo/db/s/migration_chunk_cloner_source.cpp#L125-L131&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;isShardKeyValueInRange() in migration&amp;#95;chunk&amp;#95;cloner&amp;#95;source.cpp&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/5174bb20659ada0b141ba929cc96fd3164fa7628/src/mongo/db/s/migration_destination_manager.cpp#L245&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;isInRange() in migration&amp;#95;destination&amp;#95;manager.cpp&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Having multiple function definitions is problematic because it means some aspects of sharding may handle MaxKey appropriately and other aspects may not in a way which isn&apos;t predictable.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2405650">SERVER-79549</key>
            <summary>Audit and perhaps consolidate the multiple implementations of ChunkRange::containsKey()</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-catalog-and-routing">Backlog - Catalog and Routing</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>oldshardingemea</label>
                            <label>shardingemea-qw</label>
                    </labels>
                <created>Mon, 31 Jul 2023 21:46:49 +0000</created>
                <updated>Thu, 26 Oct 2023 10:17:03 +0000</updated>
                                                                            <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
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