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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-44026] Remove global X lock for reIndex </title>
                <link>https://jira.mongodb.org/browse/SERVER-44026</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Remove global X lock acquisition for &lt;a href=&quot;https://github.com/mongodb/mongo/blob/8d5fc650b1c3a38a9d4630a48fe856eba56d6171/src/mongo/db/commands/drop_indexes.cpp#L136&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;reIndex&lt;/tt&gt;&lt;/a&gt;. This is because acquiring global lock in X mode can be blocked by prepared transactions. The enqueued global X lock can block oplog queries which need the global IS lock. If these oplog queries and the data replication are needed to satisfy the prepared transaction&apos;s write concern, then the prepare transaction and replication cannot make progress. Thus a deadlock occurs.&lt;/p&gt;

&lt;p&gt;Alternatively, if removing global X lock is not an option, deprecate the command or make sure it won&apos;t be blocked on prepare transactions.&lt;/p&gt;</description>
                <environment></environment>
        <key id="970588">SERVER-44026</key>
            <summary>Remove global X lock for reIndex </summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Tue, 15 Oct 2019 19:34:41 +0000</created>
                <updated>Sun, 29 Oct 2023 22:16:05 +0000</updated>
                            <resolved>Fri, 1 Nov 2019 15:51:15 +0000</resolved>
                                                    <fixVersion>4.3.1</fixVersion>
                    <fixVersion>4.2.2</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2548053" author="xgen-internal-githook" created="Mon, 18 Nov 2019 23:05:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;GWlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;name&apos;: &apos;Gregory Wlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44026&quot; title=&quot;Remove global X lock for reIndex &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44026&quot;&gt;&lt;del&gt;SERVER-44026&lt;/del&gt;&lt;/a&gt; Remove global X lock for reIndex&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 384292b85cbf344602b377a81821d7b1924b978e)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/38f2881335ab6052c24cfc4270529363e7cc2816&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/38f2881335ab6052c24cfc4270529363e7cc2816&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2514118" author="xgen-internal-githook" created="Fri, 1 Nov 2019 15:06:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;GWlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;name&apos;: &apos;Gregory Wlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44026&quot; title=&quot;Remove global X lock for reIndex &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44026&quot;&gt;&lt;del&gt;SERVER-44026&lt;/del&gt;&lt;/a&gt; Remove global X lock for reIndex&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/384292b85cbf344602b377a81821d7b1924b978e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/384292b85cbf344602b377a81821d7b1924b978e&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="987429">DOCS-13191</issuekey>
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            <issuekey id="920953">SERVER-43242</issuekey>
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            <issuekey id="558239">SERVER-35569</issuekey>
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                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="986668">SERVER-44343</issuekey>
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