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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-53516] Have donor shards re-pin oldest_timestamp to be their minFetchTimestamp on startup</title>
                <link>https://jira.mongodb.org/browse/SERVER-53516</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We cannot rely on primary-only service recovery because recipient shards may choose to read from a donor shard secondary and so secondaries need to re-pin their oldest&amp;#95;timestamp too. Dan Gottlieb suggested a home for where to add this to startup:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/f36403d9057c00586489a8c688f8faaa602f8d2e/src/mongo/db/mongod_main.cpp#L496-L498&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/f36403d9057c00586489a8c688f8faaa602f8d2e/src/mongo/db/mongod_main.cpp#L496-L498&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;You should be able to read from collections internally prior to that line at startup. My patch (I just added a new patchset) should keep the oldest timestamp pinned until that line. So if you add a pin prior to the call, it should be obeyed.&lt;/p&gt;&lt;/blockquote&gt;</description>
                <environment></environment>
        <key id="1577151">SERVER-53516</key>
            <summary>Have donor shards re-pin oldest_timestamp to be their minFetchTimestamp on startup</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="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>
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                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>PM-234-M3</label>
                            <label>PM-234-T-data-clone</label>
                    </labels>
                <created>Thu, 24 Dec 2020 00:46:46 +0000</created>
                <updated>Tue, 6 Dec 2022 01:40:49 +0000</updated>
                            <resolved>Tue, 2 Feb 2021 16:58:14 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3595052" author="max.hirschhorn@10gen.com" created="Tue, 2 Feb 2021 16:58:14 +0000"  >&lt;p&gt;This will be implemented as a part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53373&quot; title=&quot;Have donor shards pin oldest_timestamp as part of choosing their minFetchTimestamp&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53373&quot;&gt;&lt;del&gt;SERVER-53373&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
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