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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-65084] Ensure backup cursor is opened at time &gt; startMigrationDonorTimestamp</title>
                <link>https://jira.mongodb.org/browse/SERVER-65084</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>

&lt;p&gt;otherwise, the donor backup cursor opened on the recipient side may fetch and apply entries that contain index build operations before &lt;tt&gt;startMigrationDonorTimestamp&lt;/tt&gt;&lt;/p&gt;

&lt;p&gt;Options:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Approach 1: After the donor&#160;&lt;a href=&quot;https://github.com/10gen/mongo/blob/57b670b4df8b5ad731306a811500b46c9e71a0e9/src/mongo/db/repl/tenant_migration_donor_service.cpp#L577&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;persists&lt;/a&gt;&#160;the doc with&#160;&lt;tt&gt;startMigrationDonorTimestamp&lt;/tt&gt;&#160;and majority waits (basically before sending the recipientSyncData cmd), donor can trigger a stable checkpoint. This way, we can make sure when R opens a backup cursor on D, the backup cursor checkpoint timestamp is &amp;gt;= startMigrationDonorTimestamp.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Approach 2: The Recipient can retry opening the backup cursor on D until the backup cursor checkpoint ts is &amp;gt;=&#160;&lt;tt&gt;startMigrationDonorTimestamp&lt;/tt&gt;&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2012488">SERVER-65084</key>
            <summary>Ensure backup cursor is opened at time &gt; startMigrationDonorTimestamp</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="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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="christopher.caplinger@mongodb.com">Christopher Caplinger</assignee>
                                    <reporter username="christopher.caplinger@mongodb.com">Christopher Caplinger</reporter>
                        <labels>
                    </labels>
                <created>Wed, 30 Mar 2022 18:50:04 +0000</created>
                <updated>Sun, 29 Oct 2023 21:40:18 +0000</updated>
                            <resolved>Fri, 15 Apr 2022 17:14:30 +0000</resolved>
                                                    <fixVersion>6.0.0-rc1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4485695" author="xgen-internal-githook" created="Fri, 15 Apr 2022 16:12:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Christopher Caplinger&apos;, &apos;email&apos;: &apos;christopher.caplinger@mongodb.com&apos;, &apos;username&apos;: &apos;UnicodeSnowman&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65084&quot; title=&quot;Ensure backup cursor is opened at time &amp;gt; startMigrationDonorTimestamp&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65084&quot;&gt;&lt;del&gt;SERVER-65084&lt;/del&gt;&lt;/a&gt;: Ensure backup cursor is opened at time &amp;gt; startMigrationDonorTimestamp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/53acc5a13647baaa038b8ec54b70bdf1cc17a4f8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/53acc5a13647baaa038b8ec54b70bdf1cc17a4f8&lt;/a&gt;&lt;/p&gt;</comment>
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