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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-56482] create collection coordinator do not release critical section on stepdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-56482</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Consider the following scenario:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;&lt;font color=&quot;#4c9aff&quot;&gt;&lt;tt&gt;s0:n1&lt;/tt&gt;&lt;/font&gt; became primary&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#4c9aff&quot;&gt;&lt;tt&gt;s0:n1&lt;/tt&gt;&lt;/font&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/src/mongo/db/s/create_collection_coordinator.cpp#L400&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;starts a createCollectionCoordinator&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#4c9aff&quot;&gt;&lt;tt&gt;s0:n1&lt;/tt&gt;&lt;/font&gt; persist the coordinator document on disk&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#4c9aff&quot;&gt;&lt;tt&gt;s0:n1&lt;/tt&gt;&lt;/font&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/src/mongo/db/s/create_collection_coordinator.cpp#L441&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;aquire the recoverable critical section&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#4c9aff&quot;&gt;&lt;tt&gt;s0:n1&lt;/tt&gt;&lt;/font&gt; stepdowns just after &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/src/mongo/db/s/create_collection_coordinator.cpp#L472&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;committing the create collection&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#ff8b00&quot;&gt;&lt;tt&gt;s0:n2&lt;/tt&gt;&lt;/font&gt; resume the coordinator&lt;/li&gt;
	&lt;li&gt;&lt;font color=&quot;#ff8b00&quot;&gt;&lt;tt&gt;s0:n2&lt;/tt&gt;&lt;/font&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/src/mongo/db/s/create_collection_coordinator.cpp#L423-L435&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;found the collection has been already created&lt;/a&gt; and exit &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/src/mongo/db/s/create_collection_coordinator.cpp#L475&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;without releasing the critical section&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The goal of this ticket is to prevent the above scenario and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/67db15323c295c19fc42af721dd741dd18a8dbb8/jstests/concurrency/fsm_workloads/drop_collection_sharded.js#L9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;re-enable the drop_collection_sharded.js FSM workload on stepdown suites&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1696061">SERVER-56482</key>
            <summary>create collection coordinator do not release critical section on stepdown</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="tommaso.tocci@mongodb.com">Tommaso Tocci</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                            <label>PM-1965-Milestone-1</label>
                    </labels>
                <created>Thu, 29 Apr 2021 15:16:09 +0000</created>
                <updated>Sun, 29 Oct 2023 21:54:18 +0000</updated>
                            <resolved>Sat, 1 May 2021 11:43:54 +0000</resolved>
                                    <version>Backlog</version>
                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3750712" author="xgen-internal-githook" created="Sat, 1 May 2021 11:40:43 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-56482&quot; title=&quot;create collection coordinator do not release critical section on stepdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-56482&quot;&gt;&lt;del&gt;SERVER-56482&lt;/del&gt;&lt;/a&gt; createCollection coordinator do not release critical section on stepdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f20694e185d58d347fff7c8bf8ab791fcbc45f65&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f20694e185d58d347fff7c8bf8ab791fcbc45f65&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                                        <issuelink>
            <issuekey id="1638001">SERVER-54905</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1698490">SERVER-56555</issuekey>
        </issuelink>
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