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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-83278] Update snapshot read&apos;s returned operationTime to be the timestamp of the snapshot</title>
                <link>https://jira.mongodb.org/browse/SERVER-83278</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Based on &lt;a href=&quot;https://github.com/10gen/mongo/blob/e1d7581ed05086fccabb62de10026f491fd8fe38/src/mongo/db/service_entry_point_common.cpp#L503&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this code&lt;/a&gt;, when we return the operation time of a read operation, if the read concern was majority, we return the CurrentCommittedSnapshotOpTime, while if the read concern was anything else (local, linearizable, or snapshot), we returned the lastApplied optime. &lt;/p&gt;

&lt;p&gt;For snapshot reads, is this the intended behavior/contract for &lt;tt&gt;operationTIme&lt;/tt&gt;? &lt;br/&gt;
We do additionally &lt;a href=&quot;https://github.com/mongodb/mongo/blob/7e56544b542be3c2459358f7c358fc6100811229/src/mongo/db/query/cursor_response.cpp#L104-L106&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;attach&lt;/a&gt; an atClusterTime field in cursor responses. Should the &lt;tt&gt;operationTime&lt;/tt&gt; also be the `atClusterTime`, or is it ok to keep it as the &lt;tt&gt;lastApplied&lt;/tt&gt;?&lt;/p&gt;</description>
                <environment></environment>
        <key id="2500999">SERVER-83278</key>
            <summary>Update snapshot read&apos;s returned operationTime to be the timestamp of the snapshot</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="3" iconUrl="https://jira.mongodb.org/images/icons/statuses/inprogress.png" description="This issue is being actively worked on at the moment by the assignee.">In Progress</status>
                    <statusCategory id="4" key="indeterminate" colorName="inprogress"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="wenqin.ye@mongodb.com">Wenqin Ye</assignee>
                                    <reporter username="huayu.ouyang@mongodb.com">Huayu Ouyang</reporter>
                        <labels>
                            <label>cs-subteam3</label>
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                <created>Wed, 15 Nov 2023 17:14:23 +0000</created>
                <updated>Mon, 5 Feb 2024 17:33:42 +0000</updated>
                                                                                                <votes>1</votes>
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