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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-80438] Refine collection shard key might try to release the critical section of a migration</title>
                <link>https://jira.mongodb.org/browse/SERVER-80438</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76486&quot; title=&quot;Make RefineShardKey coordinator authoritative on shards&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76486&quot;&gt;&lt;del&gt;SERVER-76486&lt;/del&gt;&lt;/a&gt; added a new implementation of &lt;tt&gt;refineCollectionShardKey&lt;/tt&gt; that &lt;a href=&quot;https://github.com/10gen/mongo/blob/df06d87/src/mongo/db/s/refine_collection_shard_key_coordinator.cpp#L364-L396&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;resumes migrations in the same phase of the release of the critical section&lt;/a&gt;. If there is a stepdown while trying to resume migrations, but the operation succeeds, then the balancer might start sending &lt;tt&gt;_shardsvrMoveRange&lt;/tt&gt; commands to shards while the coordinator is retrying the phase, which causes a race for the critical section, if the migration wins this race, then the &lt;tt&gt;refineCollectionShardKey&lt;/tt&gt; will fail because it will try to release a critical section with a different reason.&lt;/p&gt;

&lt;p&gt;We should set the &lt;tt&gt;allowMigrations&lt;/tt&gt; flag in a different phase than the release of the critical section.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2427084">SERVER-80438</key>
            <summary>Refine collection shard key might try to release the critical section of a migration</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="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                    </labels>
                <created>Fri, 25 Aug 2023 17:58:43 +0000</created>
                <updated>Sun, 29 Oct 2023 21:17:04 +0000</updated>
                            <resolved>Wed, 30 Aug 2023 09:26:07 +0000</resolved>
                                                    <fixVersion>7.2.0-rc0</fixVersion>
                    <fixVersion>7.1.0-rc1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5668292" author="xgen-internal-githook" created="Wed, 30 Aug 2023 12:19:17 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Marcos Jos&#233; Grillo Ramirez&apos;, &apos;email&apos;: &apos;marcos.grillo@mongodb.com&apos;, &apos;username&apos;: &apos;m4nti5&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-80438&quot; title=&quot;Refine collection shard key might try to release the critical section of a migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-80438&quot;&gt;&lt;del&gt;SERVER-80438&lt;/del&gt;&lt;/a&gt; Move the resume migrations of the new refine collection shard key to its own phase&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 7063a3ca32d41a35d35ad5f98d99bfb7bfa6eee4)&lt;br/&gt;
Branch: v7.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/dae42999b591f752ac96667e8b67c4fef6a4cb38&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/dae42999b591f752ac96667e8b67c4fef6a4cb38&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5666727" author="xgen-internal-githook" created="Tue, 29 Aug 2023 18:27:14 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Marcos Jos&#233; Grillo Ramirez&apos;, &apos;email&apos;: &apos;marcos.grillo@mongodb.com&apos;, &apos;username&apos;: &apos;m4nti5&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-80438&quot; title=&quot;Refine collection shard key might try to release the critical section of a migration&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-80438&quot;&gt;&lt;del&gt;SERVER-80438&lt;/del&gt;&lt;/a&gt; Move the resume migrations of the new refine collection shard key to its own phase&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7063a3ca32d41a35d35ad5f98d99bfb7bfa6eee4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7063a3ca32d41a35d35ad5f98d99bfb7bfa6eee4&lt;/a&gt;&lt;/p&gt;</comment>
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