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    <title>MongoDB Jira</title>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-64987] Add support for concurrent DDL operations on the same database</title>
                <link>https://jira.mongodb.org/browse/SERVER-64987</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we use the DistLock manager to syncronize DDL operations.&lt;/p&gt;

&lt;p&gt;Historically DistLocks was required for DDL operations to syncronize with ongoing migrations.&lt;/p&gt;

&lt;p&gt;After &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61759&quot; title=&quot;Unsetting the AllowMigrations flag should abort ongoing migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61759&quot;&gt;&lt;del&gt;SERVER-61759&lt;/del&gt;&lt;/a&gt; it is not necessary anymore to use DistLock on DDL operations since they all use &lt;tt&gt;sharding_ddl_util::stopMigrations&lt;/tt&gt; to drain and serialize with migrations on a specific collections.&lt;/p&gt;

&lt;p&gt;This means that once 6.0 became last LTS we can make DDL operations to start using a node-local-only synchronization mechanism. Moreover by using a local syncronization mechanism that support shared/exclusive mode we will be able to support concurrent DDL operations for the same database.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2010288">SERVER-64987</key>
            <summary>Add support for concurrent DDL operations on the same database</summary>
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                                            <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-emea">[DO NOT USE] Backlog - Sharding EMEA</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
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                <created>Mon, 28 Mar 2022 15:36:26 +0000</created>
                <updated>Thu, 6 Jul 2023 09:52:05 +0000</updated>
                            <resolved>Thu, 6 Jul 2023 09:50:42 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5546664" author="JIRAUSER1268536" created="Thu, 6 Jul 2023 09:52:05 +0000"  >&lt;p&gt;This feature has already been addressed by PM-2850&lt;/p&gt;</comment>
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