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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-76835] Deadlock in the shard filtering metadata refresh path</title>
                <link>https://jira.mongodb.org/browse/SERVER-76835</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;More&#160;context is available in the more general &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76834&quot; title=&quot;Circular wait dependency between PBWM and ticket acquisition&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76834&quot;&gt;&lt;del&gt;SERVER-76834&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
This ticket is specifically to avoid the known deadlocks on the shard filtering metadata refresh path:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/761e633ecc7382b9115cddf830dd625956e3a713/src/mongo/db/s/shard_filtering_metadata_refresh.cpp#L494-L495&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ShardFilteringMetadataRefresh&lt;/a&gt;: Takes both PBWM and a ticket, but doesn&apos;t need to wait on the PBWM, neither on a ticket, because it doesn&apos;t do any storage engine work itself.&lt;/li&gt;
	&lt;li&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/761e633ecc7382b9115cddf830dd625956e3a713/src/mongo/db/s/shard_server_catalog_cache_loader.cpp#L702-L705&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ShardServerCatalogCacheLoader&lt;/a&gt;: Takes both PBWM and a ticket. The PBWM is required for correctness, but it should skip the ticket acquisition.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="2331876">SERVER-76835</key>
            <summary>Deadlock in the shard filtering metadata refresh path</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="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</reporter>
                        <labels>
                    </labels>
                <created>Thu, 4 May 2023 12:53:57 +0000</created>
                <updated>Sun, 29 Oct 2023 21:21:59 +0000</updated>
                            <resolved>Thu, 11 May 2023 11:30:57 +0000</resolved>
                                    <version>7.0.0-rc0</version>
                    <version>6.0.5</version>
                    <version>5.0.17</version>
                    <version>4.4.21</version>
                    <version>6.3.1</version>
                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.0-rc1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="5417920" author="xgen-internal-githook" created="Thu, 11 May 2023 14:46:15 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Kaloian Manassiev&apos;, &apos;email&apos;: &apos;kaloian.manassiev@mongodb.com&apos;, &apos;username&apos;: &apos;kaloianm&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76835&quot; title=&quot;Deadlock in the shard filtering metadata refresh path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76835&quot;&gt;&lt;del&gt;SERVER-76835&lt;/del&gt;&lt;/a&gt; Avoid blocking on PBWM and admission control tickets on the sharding metadata refresh path&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 515c5d6a658810648275079c038365c47d21bbb1)&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/553883f2ad4e5db4c3380ee52a47248665435de6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/553883f2ad4e5db4c3380ee52a47248665435de6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5416965" author="xgen-internal-githook" created="Thu, 11 May 2023 07:55:53 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Kaloian Manassiev&apos;, &apos;email&apos;: &apos;kaloian.manassiev@mongodb.com&apos;, &apos;username&apos;: &apos;kaloianm&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-76835&quot; title=&quot;Deadlock in the shard filtering metadata refresh path&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-76835&quot;&gt;&lt;del&gt;SERVER-76835&lt;/del&gt;&lt;/a&gt; Avoid blocking on PBWM and admission control tickets on the sharding metadata refresh path&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/515c5d6a658810648275079c038365c47d21bbb1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/515c5d6a658810648275079c038365c47d21bbb1&lt;/a&gt;&lt;/p&gt;</comment>
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