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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-32621] Use repl::CollectionCloner to copy big unsharded collections</title>
                <link>https://jira.mongodb.org/browse/SERVER-32621</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Instead of storing recordIds and fetching the documents later, the migration process can instead use the repl::CollectionCloner to copy the contents of the collection when moving a big chunk with ignoreJumbo = true.&lt;/p&gt;

&lt;p&gt;Steps:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Enter critical section. This will block new writes from being applied to the collection.&lt;/li&gt;
	&lt;li&gt;Skip MigrationChunkClonerSourceLegacy::startClone()  on the donor shard.&lt;/li&gt;
	&lt;li&gt;Send _recvChunkStart to recipient shard with useCloner: true.&lt;/li&gt;
	&lt;li&gt;Recipient shard use repl::CollectionCloner to copy the collection&lt;/li&gt;
	&lt;li&gt;Donor shard sends _configsvrCommitChunkMigration&lt;/li&gt;
	&lt;li&gt;Donor cleans up chunk with RangeDeleter.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="480791">SERVER-32621</key>
            <summary>Use repl::CollectionCloner to copy big unsharded collections</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>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13203">Gone away</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                            <label>MaxH</label>
                            <label>pm-1051-legacy-tickets</label>
                    </labels>
                <created>Tue, 9 Jan 2018 22:52:09 +0000</created>
                <updated>Fri, 27 Oct 2023 20:43:43 +0000</updated>
                            <resolved>Wed, 2 Nov 2022 13:03:52 +0000</resolved>
                                    <version>3.7.1</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4947587" author="max.hirschhorn@10gen.com" created="Wed, 2 Nov 2022 13:03:52 +0000"  >&lt;p&gt;This ticket was originally part of PM-1051 but is no longer necessary.&lt;/p&gt;</comment>
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