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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-72898] Investigate if updateShardIdentityConfigString can use MODE_IX lock</title>
                <link>https://jira.mongodb.org/browse/SERVER-72898</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As part of &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-71198&quot; title=&quot;Assert that unkillable operations that take X collection locks do not hold the RSTL&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-71198&quot;&gt;SERVER-71198&lt;/a&gt; we found that &lt;tt&gt;ShardingInitializationMongoD::updateShardIdentityConfigString&lt;/tt&gt; is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ab05cf2179d112a92467de3e454c53f75eee81ba/src/mongo/db/s/sharding_initialization_mongod.cpp#L491&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;taking a database MODE_X lock and then replacing a single document in a collection underneath it without holding any collection locks&lt;/a&gt;.{{{}&lt;br/&gt;
{}}}&lt;/p&gt;

&lt;p&gt;Ideally in this situation we should only acquire a MODE_IX lock using AutoGetCollection for the target collection as we already provide document-level locking with WiredTiger. This would avoid the unnecessary strong lock on the database.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2234619">SERVER-72898</key>
            <summary>Investigate if updateShardIdentityConfigString can use MODE_IX lock</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="jordi.serra-torrens@mongodb.com">Jordi Serra Torrens</assignee>
                                    <reporter username="jordi.olivares-provencio@mongodb.com">Jordi Olivares Provencio</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Tue, 17 Jan 2023 12:02:53 +0000</created>
                <updated>Sun, 29 Oct 2023 21:28:08 +0000</updated>
                            <resolved>Wed, 5 Apr 2023 14:56:28 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5326700" author="xgen-internal-githook" created="Wed, 5 Apr 2023 14:34:34 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Jordi Serra Torrens&apos;, &apos;email&apos;: &apos;jordi.serra-torrens@mongodb.com&apos;, &apos;username&apos;: &apos;jordist&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72898&quot; title=&quot;Investigate if updateShardIdentityConfigString can use MODE_IX lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72898&quot;&gt;&lt;del&gt;SERVER-72898&lt;/del&gt;&lt;/a&gt; Use AutoGetCollection MODE_IX on updateShardIdentityConfigString&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/adc44e57c94aab48ee8263d6efbc69c98c8a6e47&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/adc44e57c94aab48ee8263d6efbc69c98c8a6e47&lt;/a&gt;&lt;/p&gt;</comment>
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