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    <description>This file is an XML representation of an issue</description>
    <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-59127] Remove the legacy version of configsvr_merge_chunk_command from master branch</title>
                <link>https://jira.mongodb.org/browse/SERVER-59127</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Part of the optimisations proposed by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56786&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;SERVER-56786&lt;/a&gt; implied the creation of a new version of the config server command to mergeChunks, while also keeping the old one to ensure interoperability between nodes running different versions of MDB.&lt;/p&gt;

&lt;p&gt;Now that v5.0 (which includes the changes introduced by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56786&quot; title=&quot;There are three routing info refreshes and two chunk scans on the mergeChunks path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56786&quot;&gt;&lt;del&gt;SERVER-56786&lt;/del&gt;&lt;/a&gt;) has been released, the support to the legacy version of the command is no longer needed  and the code can be cleaned up: more specifically, it is possible to remove&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/merge_chunks_command.cpp#L101-L206&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the function&lt;/a&gt; in charge of invoking the legacy CS command from the shard&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/s/request_types/merge_chunk_request.idl#L71-L100l&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The definition&lt;/a&gt;  and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/config/configsvr_merge_chunk_command.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;boilerplate code&lt;/a&gt; of the CS command&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/s/config/sharding_catalog_manager_chunk_operations.cpp#L733-L860&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The logic&lt;/a&gt; behind the command&lt;/li&gt;
&lt;/ul&gt;


&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/s/request_types/merge_chunk_request_test.cpp&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The unit test&lt;/a&gt; of the command&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1842151">SERVER-59127</key>
            <summary>Remove the legacy version of configsvr_merge_chunk_command from master branch</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</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="paolo.polato@mongodb.com">Paolo Polato</assignee>
                                    <reporter username="paolo.polato@mongodb.com">Paolo Polato</reporter>
                        <labels>
                            <label>5.0-cleanup</label>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Thu, 5 Aug 2021 12:54:39 +0000</created>
                <updated>Sun, 29 Oct 2023 21:49:52 +0000</updated>
                            <resolved>Tue, 14 Sep 2021 07:22:50 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4107092" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:17:14 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="4056866" author="xgen-internal-githook" created="Tue, 14 Sep 2021 07:21:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Paolo Polato&apos;, &apos;email&apos;: &apos;paolo.polato@mongodb.com&apos;, &apos;username&apos;: &apos;ppolato&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-59127&quot; title=&quot;Remove the legacy version of configsvr_merge_chunk_command from master branch&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-59127&quot;&gt;&lt;del&gt;SERVER-59127&lt;/del&gt;&lt;/a&gt; Remove the legacy configsvr_merge_chunk_command&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a62d3df9220a0085b505d1f423c4fd8c75cb6ab2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a62d3df9220a0085b505d1f423c4fd8c75cb6ab2&lt;/a&gt;&lt;/p&gt;</comment>
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