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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-44913] Index operations should only abort migrations of first chunk to a shard</title>
                <link>https://jira.mongodb.org/browse/SERVER-44913</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;From the &lt;a href=&quot;https://docs.google.com/document/d/1xBPYqJz8ahrAOG-Rb9XdTeZYTPGvIY_L6YXJ2KaH95M/edit?ts=5dd86765#heading=h.ugdhmquc21er&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;design for Each Shard has Correct Indexes&lt;/a&gt;:&lt;/p&gt;
&lt;blockquote&gt;&lt;p&gt;Serializing entire migrations and index operations is only necessary when the recipient is receiving its first chunk because the shard versioning protocol will guarantee all shards with chunks will be targeted by index operations. So as an optimization, only the migration of the first chunk to a shard needs to be serialized with index operations (beyond existing serialization around entering the migration critical section).&lt;/p&gt;&lt;/blockquote&gt;</description>
                <environment></environment>
        <key id="1031536">SERVER-44913</key>
            <summary>Index operations should only abort migrations of first chunk to a shard</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="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Mon, 2 Dec 2019 22:38:23 +0000</created>
                <updated>Tue, 6 Dec 2022 02:40:55 +0000</updated>
                            <resolved>Fri, 14 Feb 2020 16:29:27 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2878709" author="esha.maharishi@10gen.com" created="Fri, 14 Feb 2020 16:29:27 +0000"  >&lt;p&gt;Closing because this was not a requirement for correctness and was an optimization that was difficult to do. We can reopen if needed.&lt;/p&gt;</comment>
                            <comment id="2753549" author="jack.mulrow" created="Wed, 22 Jan 2020 20:10:07 +0000"  >&lt;p&gt;This isn&apos;t necessary for correctness, so moving out of PM-1361. It might still be useful to do this if users are seeing many migrations abort because of concurrent index operations, so moving to the general sharding backlog for triage.&lt;/p&gt;</comment>
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