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<item>
            <title>[SERVER-56888] Require a unique identifier in critical section reasons</title>
                <link>https://jira.mongodb.org/browse/SERVER-56888</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When acquiring a collection critical section, a &quot;weak&quot; reason is currently provided for DDL operations.&lt;/p&gt;

&lt;p&gt;For example, the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/25e6860edfde67a512a52ed02ef3c22ac8d54980/src/mongo/db/s/rename_collection_participant_service.cpp#L230-L233&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;reason on rename participants&lt;/a&gt; simply includes the involved collections.&lt;/p&gt;

&lt;p&gt;The objective of this ticket is to make the critical section reason more strict, requiring the inclusion in the reason of a unique identifier (e.g. the collection uuid) to avoid re-joining in case of bugs around similar operations.&lt;/p&gt;

&lt;p&gt;This ticket is to address the problem both for recoverable and in-memory critical section, once &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56788&quot; title=&quot;Extend the in-memory collection critical section to keep track of the ongoing operation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56788&quot;&gt;&lt;del&gt;SERVER-56788&lt;/del&gt;&lt;/a&gt; will be completed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1712764">SERVER-56888</key>
            <summary>Require a unique identifier in critical section reasons</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="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="12300">Won&apos;t Do</resolution>
                                        <assignee username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
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                <created>Wed, 12 May 2021 14:40:22 +0000</created>
                <updated>Mon, 11 Oct 2021 10:59:40 +0000</updated>
                            <resolved>Mon, 5 Jul 2021 07:32:32 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3916196" author="pierlauro.sciarelli" created="Mon, 5 Jul 2021 07:32:32 +0000"  >&lt;p&gt;Closing because it has been decided to not proceed since all DDL coordinators have a fixed LSID and that by itself is a unique identifier &quot;protecting&quot; the critical section acquisition/releasing at an upper level.&lt;/p&gt;</comment>
                            <comment id="3769180" author="pierlauro.sciarelli" created="Wed, 12 May 2021 14:51:31 +0000"  >&lt;p&gt;&lt;tt&gt;LSID + txnNumber&lt;/tt&gt; sounds good to me! &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;</comment>
                            <comment id="3769166" author="kaloian.manassiev" created="Wed, 12 May 2021 14:46:41 +0000"  >&lt;p&gt;FYI, the critical section is per collection and the UUID is constant for the lifetime of the collection, so perhaps not the collection UUID &lt;img class=&quot;emoticon&quot; src=&quot;https://jira.mongodb.org/images/icons/emoticons/smile.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/p&gt;

&lt;p&gt;However, since we will be assigning unique LSIDs for each coordinator, we can just use the LSID + txnNumber pair perhaps?&lt;/p&gt;</comment>
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