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    <title>MongoDB Jira</title>
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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-27613] Remove unused &apos;chunkVersion&apos; field sent in splitChunk command</title>
                <link>https://jira.mongodb.org/browse/SERVER-27613</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27510&quot; title=&quot;Compare only epochs instead of full chunk versions in CollectionMetadata::checkChunkIsValid()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27510&quot;&gt;&lt;del&gt;SERVER-27510&lt;/del&gt;&lt;/a&gt; made splitChunk stop using the ChunkVersion sent in the &apos;chunkVersion&apos; field of the command. This field should therefore stop being sent, since it&apos;s no longer used.&lt;/p&gt;

&lt;p&gt;Note: splitChunk also has another ChunkVersion field, &apos;shardVersion&apos;, from which the epoch is extracted for comparison to ensure the collection hasn&apos;t been dropped and re-created. See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/9478afd9fc9598cc9823a2176cf78260c1a74528/src/mongo/db/s/split_chunk_command.cpp#L301-L302&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="343848">SERVER-27613</key>
            <summary>Remove unused &apos;chunkVersion&apos; field sent in splitChunk command</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="esha.maharishi@mongodb.com">Esha Maharishi</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                    </labels>
                <created>Mon, 9 Jan 2017 20:19:36 +0000</created>
                <updated>Wed, 5 Apr 2017 11:42:19 +0000</updated>
                            <resolved>Wed, 11 Jan 2017 16:19:40 +0000</resolved>
                                    <version>3.5.1</version>
                                    <fixVersion>3.4.2</fixVersion>
                    <fixVersion>3.5.2</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1474642" author="xgen-internal-githook" created="Wed, 11 Jan 2017 16:24:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;EshaMaharishi&apos;, u&apos;name&apos;: u&apos;Esha Maharishi&apos;, u&apos;email&apos;: u&apos;esha.maharishi@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27613&quot; title=&quot;Remove unused &amp;#39;chunkVersion&amp;#39; field sent in splitChunk command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27613&quot;&gt;&lt;del&gt;SERVER-27613&lt;/del&gt;&lt;/a&gt; do not send chunk&apos;s ChunkVersion in split requests&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/26bbc7bd32daa16a2a7585b5738bcc7800cd6c52&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/26bbc7bd32daa16a2a7585b5738bcc7800cd6c52&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1474632" author="xgen-internal-githook" created="Wed, 11 Jan 2017 16:18:45 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;EshaMaharishi&apos;, u&apos;name&apos;: u&apos;Esha Maharishi&apos;, u&apos;email&apos;: u&apos;esha.maharishi@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27613&quot; title=&quot;Remove unused &amp;#39;chunkVersion&amp;#39; field sent in splitChunk command&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27613&quot;&gt;&lt;del&gt;SERVER-27613&lt;/del&gt;&lt;/a&gt; do not send chunk&apos;s ChunkVersion in split requests&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5998e8cde81d850e6b1bbd9156ed7d3223e6cd51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5998e8cde81d850e6b1bbd9156ed7d3223e6cd51&lt;/a&gt;&lt;/p&gt;</comment>
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