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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-85688] Set stable timestamp to end of each oplog batch during startup recovery for restore</title>
                <link>https://jira.mongodb.org/browse/SERVER-85688</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This came out of an investigation during &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-84706&quot; title=&quot;Investigate if setting the oldest timestamp greater than the stable timestamp can be avoided&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-84706&quot;&gt;SERVER-84706&lt;/a&gt;. Today, startup recovery for restore first &lt;a href=&quot;https://github.com/10gen/mongo/blob/4f48791a9a805a0384070ee2d016e35ae7630d1e/src/mongo/db/repl/replication_recovery.cpp#L551-L553&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;sets the initial data timestamp to the sentinel&lt;/a&gt; so that we take unstable checkpoints. We also &lt;a href=&quot;https://github.com/10gen/mongo/blob/4f48791a9a805a0384070ee2d016e35ae7630d1e/src/mongo/db/repl/replication_recovery.cpp#L555&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;attempts to set the stable timestamp to &lt;tt&gt;Timestamp::min()&lt;/tt&gt;&lt;/a&gt;. However, this is essentially a no-op, as we do not allow trying to &lt;a href=&quot;https://github.com/10gen/mongo/blob/4f48791a9a805a0384070ee2d016e35ae7630d1e/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L2182-L2190&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;reset the stable timestamp if it is null&lt;/a&gt;. In addition, it is not safe to set the stable timestamp backwards.&lt;/p&gt;

&lt;p&gt;After discussion within RSS, we determined that it should be equally performant and safe to set the stable timestamp during startup recovery for restore and take stable checkpoints. This would allow us to advance the stable timestamp alongside the oldest timestamp, preventing any future occurrences of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-84706&quot; title=&quot;Investigate if setting the oldest timestamp greater than the stable timestamp can be avoided&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-84706&quot;&gt;SERVER-84706&lt;/a&gt;. We should do this to resolve this bug.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2556393">SERVER-85688</key>
            <summary>Set stable timestamp to end of each oplog batch during startup recovery for restore</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="1" iconUrl="https://jira.mongodb.org/images/icons/statuses/open.png" description="">Open</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-repl">Backlog - Replication Team</assignee>
                                    <reporter username="xuerui.fa@mongodb.com">Xuerui Fa</reporter>
                        <labels>
                            <label>repl-shortlist</label>
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                <created>Wed, 24 Jan 2024 23:08:57 +0000</created>
                <updated>Fri, 2 Feb 2024 18:56:35 +0000</updated>
                                                            <fixVersion>8.0 Required</fixVersion>
                                                        <votes>0</votes>
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