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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-78662] Deadlock with index build, step down, prepared transaction, and MODE_IS coll lock</title>
                <link>https://jira.mongodb.org/browse/SERVER-78662</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;PreparedTransaction&lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;IndexBuild (uninterruptible by stepdown)&lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;OtherCommand&lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;StepDownThread&lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;Hold coll MODE_IX lock&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
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&lt;td class=&apos;confluenceTd&apos;&gt;Enqueue coll MODE_X lock (does not hold RSTL)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;&#160;&lt;/td&gt;
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	&lt;li&gt;Holds RSTL MODE_IX while waiting for collection lock&lt;/li&gt;
&lt;/ul&gt;
&lt;/td&gt;
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&lt;/tr&gt;
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&lt;p&gt;Stepdown does not kill operations that do no take locks conflicting with writes.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2383665">SERVER-78662</key>
            <summary>Deadlock with index build, step down, prepared transaction, and MODE_IS coll lock</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="yujin.kang@mongodb.com">Yujin Kang Park</assignee>
                                    <reporter username="yujin.kang@mongodb.com">Yujin Kang Park</reporter>
                        <labels>
                    </labels>
                <created>Wed, 5 Jul 2023 08:20:30 +0000</created>
                <updated>Mon, 29 Jan 2024 15:03:26 +0000</updated>
                            <resolved>Mon, 7 Aug 2023 09:39:46 +0000</resolved>
                                                    <fixVersion>7.1.0-rc0</fixVersion>
                    <fixVersion>7.0.6</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="6049085" author="xgen-internal-githook" created="Mon, 29 Jan 2024 14:43:22 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78662&quot; title=&quot;Deadlock with index build, step down, prepared transaction, and MODE_IS coll lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78662&quot;&gt;&lt;del&gt;SERVER-78662&lt;/del&gt;&lt;/a&gt; Add timeout to MODE_X lock acquisition in index build&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 34d2cd582b02e49ace9f1c91033280035571d5cc)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 0a3e0dd22b719026142d6ae1c418a7cb54807621&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fdb3c87f243279a0b7b6c83558a3849635750051&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fdb3c87f243279a0b7b6c83558a3849635750051&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5616170" author="xgen-internal-githook" created="Mon, 7 Aug 2023 02:40:57 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78662&quot; title=&quot;Deadlock with index build, step down, prepared transaction, and MODE_IS coll lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78662&quot;&gt;&lt;del&gt;SERVER-78662&lt;/del&gt;&lt;/a&gt; Add timeout to MODE_X lock acquisition in index build&lt;br/&gt;
Branch: minh.luu-no_compile_sys-perf&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/34d2cd582b02e49ace9f1c91033280035571d5cc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/34d2cd582b02e49ace9f1c91033280035571d5cc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5614032" author="xgen-internal-githook" created="Fri, 4 Aug 2023 16:44:43 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Yu Jin Kang Park&apos;, &apos;email&apos;: &apos;yujin.kang@mongodb.com&apos;, &apos;username&apos;: &apos;ykangpark&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-78662&quot; title=&quot;Deadlock with index build, step down, prepared transaction, and MODE_IS coll lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-78662&quot;&gt;&lt;del&gt;SERVER-78662&lt;/del&gt;&lt;/a&gt; Add timeout to MODE_X lock acquisition in index build&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/34d2cd582b02e49ace9f1c91033280035571d5cc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/34d2cd582b02e49ace9f1c91033280035571d5cc&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5548919" author="vishnu.kaushik" created="Thu, 6 Jul 2023 21:02:45 +0000"  >&lt;p&gt;Note that the original BF happened on 6.0, so we should backport this to that branch and maybe even further back if needed.&lt;/p&gt;</comment>
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            <issuekey id="2297842">SERVER-75288</issuekey>
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