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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-41462] do not lock RSTL for uninterruptible index lock operations</title>
                <link>https://jira.mongodb.org/browse/SERVER-41462</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order to break the cycle of some potential 3-way deadlocks involving index builds, prepared transactions, and step down, we will investigate not acquiring the RSTL for index build locks that are uninterruptible.  This is acceptible because index builds that started running on a secondary, and index build aborts in general, do not need to coordinate with step up and step down because they are a rare type of operation that are not interrupted by step up/down.&lt;/p&gt;</description>
                <environment></environment>
        <key id="787591">SERVER-41462</key>
            <summary>do not lock RSTL for uninterruptible index lock operations</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="milkie@mongodb.com">Eric Milkie</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                    </labels>
                <created>Mon, 3 Jun 2019 17:45:26 +0000</created>
                <updated>Sun, 29 Oct 2023 22:20:27 +0000</updated>
                            <resolved>Tue, 18 Jun 2019 17:25:47 +0000</resolved>
                                                    <fixVersion>4.2.0-rc2</fixVersion>
                    <fixVersion>4.3.1</fixVersion>
                                    <component>Storage</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="2297464" author="xgen-internal-githook" created="Tue, 25 Jun 2019 20:42:04 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Milkie&apos;, &apos;username&apos;: &apos;milkie&apos;, &apos;email&apos;: &apos;milkie@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41462&quot; title=&quot;do not lock RSTL for uninterruptible index lock operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41462&quot;&gt;&lt;del&gt;SERVER-41462&lt;/del&gt;&lt;/a&gt; unlock RSTL for index builds on secondaries&lt;/p&gt;

&lt;p&gt;This is safe to do because index builds started on secondaries do not need to synchronize with step up or step down via the RSTL.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit beaa372035ef597e77db2220bb624028417d9ce5)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/21f0a00b54c9fac5ac99aa0d2f81039c8564c6c9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/21f0a00b54c9fac5ac99aa0d2f81039c8564c6c9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2288704" author="xgen-internal-githook" created="Tue, 18 Jun 2019 17:23:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Eric Milkie&apos;, &apos;email&apos;: &apos;milkie@10gen.com&apos;, &apos;username&apos;: &apos;milkie&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-41462&quot; title=&quot;do not lock RSTL for uninterruptible index lock operations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-41462&quot;&gt;&lt;del&gt;SERVER-41462&lt;/del&gt;&lt;/a&gt; unlock RSTL for index builds on secondaries&lt;/p&gt;

&lt;p&gt;This is safe to do because index builds started on secondaries do not need to synchronize with step up or step down via the RSTL.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/beaa372035ef597e77db2220bb624028417d9ce5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/beaa372035ef597e77db2220bb624028417d9ce5&lt;/a&gt;&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="759571">SERVER-41033</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="895861">SERVER-42824</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="971168">SERVER-44045</issuekey>
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            <issuekey id="994275">SERVER-44507</issuekey>
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