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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-80863] Centralise cached oplog pointer initialization to collection registering in catalog</title>
                <link>https://jira.mongodb.org/browse/SERVER-80863</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There&apos;s several calls to acquireOplogCollectionForLogging and establishOplogCollectionForLogging in different parts of the code, attempting to fetch the oplog Collection pointer and cache it.&#160;&lt;/p&gt;

&lt;p&gt;If the Collection object exists and is available, it must have been registered in the collection catalog. There already is &lt;a href=&quot;https://github.com/10gen/mongo/blob/96931daffb8dead540cf6798b02c4b4fccc2a1dc/src/mongo/db/catalog/collection_impl.cpp#L327&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;onDeregisterFromCatalog&lt;/a&gt; call which basically clears the cached oplog pointer. We could do the same for the register path, and register the created instance. Ending up with a single call to establishOplogCollectionForLogging.&lt;/p&gt;

&lt;p&gt;The drawback is some tests manually creating the oplog collection have to be fixed. (Mainly due to global write lock requirement / invariant). More generally, we&apos;d have to address a user attempting to create local.oplog.rs (but this probably shouldn&apos;t be allowed in the first place).&lt;/p&gt;

&lt;p&gt;(Split off from &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-80789&quot; title=&quot;Make AutoGetOplog behave consistently in replica set node started as standalone&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-80789&quot;&gt;&lt;del&gt;SERVER-80789&lt;/del&gt;&lt;/a&gt; to ease backportability)&lt;/p&gt;</description>
                <environment></environment>
        <key id="2436684">SERVER-80863</key>
            <summary>Centralise cached oplog pointer initialization to collection registering in catalog</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</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="yujin.kang@mongodb.com">Yujin Kang Park</reporter>
                        <labels>
                            <label>car-qw</label>
                            <label>techdebt</label>
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                <created>Thu, 7 Sep 2023 16:48:22 +0000</created>
                <updated>Mon, 6 Nov 2023 10:38:05 +0000</updated>
                                                                                                <votes>0</votes>
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