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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-57175] Remove reduntant collection refresh on create collection coordinator</title>
                <link>https://jira.mongodb.org/browse/SERVER-57175</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the create collection coordinator we perform &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f6b17f1a3d31b8b74796aabd38094f976ef05169/src/mongo/db/s/create_collection_coordinator.cpp#L397-L413&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;a preliminary check to see if the collection has been already shareded&lt;/a&gt;. In fact the collection could have been already sharded previously by either another shard collection execution.&lt;/p&gt;

&lt;p&gt;After &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f6b17f1a3d31b8b74796aabd38094f976ef05169/src/mongo/db/s/create_collection_coordinator.cpp#L420&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;acquiring the collection critical section&lt;/a&gt; we &lt;a href=&quot;https://github.com/mongodb/mongo/blob/f6b17f1a3d31b8b74796aabd38094f976ef05169/src/mongo/db/s/create_collection_coordinator.cpp#L426-L443&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;perform again the very same check&lt;/a&gt;, this shouldn&apos;t be necessary because no-one else except for the running coordinator could possibly shard the collection.&lt;/p&gt;

&lt;p&gt;The goal of this ticket is to remove completely the second check that is redundant.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1755767">SERVER-57175</key>
            <summary>Remove reduntant collection refresh on create collection coordinator</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="13201">Fixed</resolution>
                                        <assignee username="tommaso.tocci@mongodb.com">Tommaso Tocci</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                            <label>PM-1965-Milestone-1</label>
                    </labels>
                <created>Tue, 25 May 2021 08:13:14 +0000</created>
                <updated>Sun, 29 Oct 2023 21:53:07 +0000</updated>
                            <resolved>Tue, 25 May 2021 14:38:24 +0000</resolved>
                                    <version>5.0.0</version>
                    <version>Backlog</version>
                                    <fixVersion>5.0.0-rc1</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="4108197" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:59:52 +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="3840583" author="xgen-internal-githook" created="Wed, 26 May 2021 08:02:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57175&quot; title=&quot;Remove reduntant collection refresh on create collection coordinator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57175&quot;&gt;&lt;del&gt;SERVER-57175&lt;/del&gt;&lt;/a&gt; Remove reduntant collection refresh on create collection coordinator&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 172cadf4113b6edaccc40db8cf7d217700f3baf5)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/96efa60cfb49a6412e7bb583fdd41dbd72670f1e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/96efa60cfb49a6412e7bb583fdd41dbd72670f1e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3837682" author="xgen-internal-githook" created="Tue, 25 May 2021 14:35:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57175&quot; title=&quot;Remove reduntant collection refresh on create collection coordinator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57175&quot;&gt;&lt;del&gt;SERVER-57175&lt;/del&gt;&lt;/a&gt; Remove reduntant collection refresh on create collection coordinator&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/172cadf4113b6edaccc40db8cf7d217700f3baf5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/172cadf4113b6edaccc40db8cf7d217700f3baf5&lt;/a&gt;&lt;/p&gt;</comment>
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