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    <title>MongoDB Jira</title>
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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-71161] Investigate removal of `signalOplogWaiters` in favor of majority committed point notification</title>
                <link>https://jira.mongodb.org/browse/SERVER-71161</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-69959&quot; title=&quot;Introduce majority committed point advancement notification mechanism&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-69959&quot;&gt;&lt;del&gt;SERVER-69959&lt;/del&gt;&lt;/a&gt; majority committed point advancement notification mechanism is introduced.&#160;Now change streams that are reading through oplog and change collection (in serverless) can benefit from it while waiting for the insertions of the new oplog entries (which are majority committed).&lt;/p&gt;

&lt;p&gt;Originally change streams (that are reading the oplog) were relying on the `signalOplogWaiters()`mechanism, which was called once majority committed point advanced. This ticket&apos;s purpose is to investigate whether or not this method can be removed as it is no longer needed for the change streams purposes.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://spruce.mongodb.com/version/63692bb61e2d17347195a354/tasks?sorts=STATUS%3AASC%3BBASE_STATUS%3ADESC&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Evergreen patch&lt;/a&gt; with `signalOplogWaiters()` being removed.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2177630">SERVER-71161</key>
            <summary>Investigate removal of `signalOplogWaiters` in favor of majority committed point notification</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="matthew.russotto@mongodb.com">Matthew Russotto</assignee>
                                    <reporter username="denis.grebennicov@mongodb.com">Denis Grebennicov</reporter>
                        <labels>
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                <created>Tue, 8 Nov 2022 10:48:15 +0000</created>
                <updated>Mon, 14 Nov 2022 19:43:53 +0000</updated>
                            <resolved>Mon, 14 Nov 2022 19:43:53 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4979906" author="matthew.russotto" created="Mon, 14 Nov 2022 19:43:38 +0000"  >&lt;p&gt;The &apos;signalOplogWaiters()&apos; method is used by replication internally for for the oplog reads done by secondaries (which are done with a local read concern, not majority), so we cannot remove it.&lt;/p&gt;</comment>
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