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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-83320] Create collection participant may incorrectly try to release the critical section</title>
                <link>https://jira.mongodb.org/browse/SERVER-83320</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;(At the time of writing, no released version is affected by the bug because the new coordinator &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dd975024e8e11bf250c9a75310020bb33a689e5d/src/mongo/db/s/shardsvr_create_collection_command.cpp#L190-L191&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;is feature flagged&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-79491&quot; title=&quot;Define CreateCollectionCoordinator phases&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-79491&quot;&gt;&lt;del&gt;SERVER-79491&lt;/del&gt;&lt;/a&gt; introduced the acquisition/release of critical section on participant shards. The &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dd975024e8e11bf250c9a75310020bb33a689e5d/src/mongo/db/s/create_collection_coordinator.cpp#L1554-L1569&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;release&lt;/a&gt; is calling into the &lt;tt&gt;ShardSvrParticipantBlockCommand&lt;/tt&gt; that &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dd975024e8e11bf250c9a75310020bb33a689e5d/src/mongo/db/s/shardsvr_participant_block_command.cpp#L127&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;is throwing if the critical section reason differs&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;This can lead to hit an invariant in the same way described in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70167&quot; title=&quot;Resumed create coordinator may incorrectly try to release the critical section&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70167&quot;&gt;&lt;del&gt;SERVER-70167&lt;/del&gt;&lt;/a&gt;, with the difference that it could be hit on a participant node rather than on the coordinator node.&lt;/p&gt;

&lt;p&gt;A possible solution would be to add a flag to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/dd975024e8e11bf250c9a75310020bb33a689e5d/src/mongo/db/s/participant_block.idl#L44&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the command&lt;/a&gt; indicating not to throw in case the reason differs.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2501614">SERVER-83320</key>
            <summary>Create collection participant may incorrectly try to release the critical section</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="pol.pinol@mongodb.com">Pol Pinol</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                    </labels>
                <created>Thu, 16 Nov 2023 08:50:43 +0000</created>
                <updated>Fri, 17 Nov 2023 08:06:32 +0000</updated>
                            <resolved>Fri, 17 Nov 2023 08:06:32 +0000</resolved>
                                                    <fixVersion>7.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5887495" author="xgen-internal-githook" created="Fri, 17 Nov 2023 07:57:12 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Pol Pinol Castuera&apos;, &apos;email&apos;: &apos;pol.pinol@mongodb.com&apos;, &apos;username&apos;: &apos;PolPinol&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-83320&quot; title=&quot;Create collection participant may incorrectly try to release the critical section&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-83320&quot;&gt;&lt;del&gt;SERVER-83320&lt;/del&gt;&lt;/a&gt; Create collection participant may incorrectly try to release the critical section&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2393dce6725013bf8a6b5f7cde55c3839856cb99&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2393dce6725013bf8a6b5f7cde55c3839856cb99&lt;/a&gt;&lt;/p&gt;</comment>
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