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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-81537] Refactor addShard code to use the Shard object </title>
                <link>https://jira.mongodb.org/browse/SERVER-81537</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When adding a shard we currently &lt;a href=&quot;https://github.com/10gen/mongo/blob/cc0b81ad9bec7814662c95a90cd8fd60579b87f5/src/mongo/db/s/config/sharding_catalog_manager_shard_operations.cpp#L716&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;create a shard object&lt;/a&gt; that is only used to &lt;a href=&quot;https://github.com/10gen/mongo/blob/cc0b81ad9bec7814662c95a90cd8fd60579b87f5/src/mongo/db/s/config/sharding_catalog_manager_shard_operations.cpp#L717&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;obtain a targeter&lt;/a&gt;. Then, we proceed to use this &lt;tt&gt;targeter&lt;/tt&gt; and &lt;a href=&quot;https://github.com/10gen/mongo/blob/cc0b81ad9bec7814662c95a90cd8fd60579b87f5/src/mongo/db/s/config/sharding_catalog_manager_shard_operations.cpp#L635&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a helper function&lt;/a&gt; to communicate with the shard. We should be able to use the shard object to communicate with the shard instead. Initially this was not possible because the RSM code was intrinsically called, and this causes problems because the &lt;tt&gt;RSM&lt;/tt&gt; automatically do changes in the &lt;tt&gt;ShardRegistry&lt;/tt&gt;. The main problem with this is that we have duplicated code to handle the communication with the shard which is already implemented for example in the &lt;tt&gt;&lt;a href=&quot;https://github.com/10gen/mongo/blob/master/src/mongo/s/client/shard_remote.h#L63&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ShardRemote&lt;/a&gt;&lt;/tt&gt; class.&lt;/p&gt;

&lt;p&gt;We should refactor the &lt;tt&gt;addShard&lt;/tt&gt; code to use a &lt;tt&gt;Shard&lt;/tt&gt; object for communications. This might imply creating a custom &lt;tt&gt;Shard&lt;/tt&gt; object that does not communicate with the &lt;tt&gt;RSM&lt;/tt&gt; nor the &lt;tt&gt;ShardRegistry&lt;/tt&gt;. It is also part of this ticket analyze if we need to use the new &lt;tt&gt;async_rpc&lt;/tt&gt; &lt;a href=&quot;https://github.com/10gen/mongo/blob/cc0b81ad9bec7814662c95a90cd8fd60579b87f5/src/mongo/executor/async_rpc.h#L86&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;library&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2453894">SERVER-81537</key>
            <summary>Refactor addShard code to use the Shard object </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="1" iconUrl="https://jira.mongodb.org/images/icons/statuses/open.png" description="">Open</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="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                            <label>oldshardingemea</label>
                    </labels>
                <created>Thu, 28 Sep 2023 17:51:30 +0000</created>
                <updated>Thu, 26 Oct 2023 10:22:36 +0000</updated>
                                                                            <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
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