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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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            <title>[SERVER-63442] Refactor WTRecordStoreCursor timestamp fields</title>
                <link>https://jira.mongodb.org/browse/SERVER-63442</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Oplog cursors keep around two timestamps as state. The &lt;a href=&quot;https://github.com/mongodb/mongo/blob/048b9683575473b335ffce45093cc4ab7f03616b/src/mongo/db/storage/wiredtiger/wiredtiger_record_store.h#L437-L451&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;traditional visibility &quot;no holes&quot; time and SERVER-63308 introduced &lt;tt&gt;_readTimestampForOplog&lt;/tt&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Given visibility should ultimately be the minimum of the two values (when they both exist), it doesn&apos;t seem necessary to have two variables. However, an initial effort to make that reduction failed.&lt;/p&gt;

&lt;p&gt;I speculate some of the complexity has to do with &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1938ca8564fb969f68058d68c55f632eec78a665/src/mongo/db/storage/wiredtiger/wiredtiger_recovery_unit.cpp#L556-L557&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;oplog visibility being reset on _txnClose&lt;/a&gt;, but the &lt;tt&gt;_timestampReadSource&lt;/tt&gt; is not. It&apos;s unclear what callers rely on those semantics.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1979657">SERVER-63442</key>
            <summary>Refactor WTRecordStoreCursor timestamp fields</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-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="daniel.gottlieb@mongodb.com">Daniel Gottlieb</reporter>
                        <labels>
                            <label>techdebt</label>
                    </labels>
                <created>Tue, 8 Feb 2022 19:06:02 +0000</created>
                <updated>Mon, 5 Jun 2023 15:08:33 +0000</updated>
                                                                                                <votes>0</votes>
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