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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-85704] Use lastWritten opTime for to wait for afterClusterTime/atClusterTime on secondaries</title>
                <link>https://jira.mongodb.org/browse/SERVER-85704</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently if the read concern specifies one of these two options, we may &lt;a href=&quot;https://github.com/mongodb/mongo/blob/de94a8532566b027be899e7db1e8456128b510f7/src/mongo/db/read_concern_mongod.cpp#L422&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;do a no-op write if needed&lt;/a&gt;. If the read is on a secondary, the node &lt;a href=&quot;https://github.com/mongodb/mongo/blob/de94a8532566b027be899e7db1e8456128b510f7/src/mongo/db/read_concern_mongod.cpp#L422&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;waits for a short period of time&lt;/a&gt;, and then requests the primary to write a no-op if the lastApplied still cannot catch-up to the specified afterClusterTime / atClusterTime after the wait. We will change this to wait for the lastWritten opTime to catch-up instead of lastApplied because to decide whether a no-op write is needed, we just need to know that the specified opTime exists in the oplog, without having it to be applied.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2556661">SERVER-85704</key>
            <summary>Use lastWritten opTime for to wait for afterClusterTime/atClusterTime on secondaries</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="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-repl">Backlog - Replication Team</assignee>
                                    <reporter username="wenbin.zhu@mongodb.com">Wenbin Zhu</reporter>
                        <labels>
                            <label>PM-3489-Milestone-LastWrittenOpTime-CP</label>
                            <label>PM-3489-perf-testing-required</label>
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                <created>Thu, 25 Jan 2024 07:19:13 +0000</created>
                <updated>Wed, 31 Jan 2024 15:19:11 +0000</updated>
                                                                                                <votes>0</votes>
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