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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>
    </build-info>


<item>
            <title>[SERVER-48524] Acquire config.system.indexBuilds lock earlier and with collection lock</title>
                <link>https://jira.mongodb.org/browse/SERVER-48524</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We push down &quot;config.system.indexBuilds&quot; lock acquisition to a &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5c1cb9b2908b4d1622b44dd1020c76b3e563610d/src/mongo/db/index_build_entry_helpers.cpp#L236-L237&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;low-level helper&lt;/a&gt;. This means that in the index build &lt;a href=&quot;https://github.com/mongodb/mongo/blob/41cff016562656589bd3a3c114d6dfb31dd3271f/src/mongo/db/index_builds_coordinator.cpp#L1037&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;abort critical section&lt;/a&gt;, if our operation has been interrupted, the lock acquisition to remove the index build entry can fail.&lt;/p&gt;

&lt;p&gt;The current solution to prevent a crash is an UninterruptibleLockGuard, which is not ideal. Though we will not try to take an X lock, which could be problematic, we should just make the caller responsible for lock acquisition.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1368243">SERVER-48524</key>
            <summary>Acquire config.system.indexBuilds lock earlier and with collection 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="benety.goh@mongodb.com">Benety Goh</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                            <label>newgrad</label>
                    </labels>
                <created>Mon, 1 Jun 2020 19:26:21 +0000</created>
                <updated>Sun, 29 Oct 2023 22:07:34 +0000</updated>
                            <resolved>Thu, 17 Jun 2021 12:14:25 +0000</resolved>
                                                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Index Maintenance</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4108260" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 19:01:50 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3884310" author="xgen-internal-githook" created="Thu, 17 Jun 2021 10:20:43 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48524&quot; title=&quot;Acquire config.system.indexBuilds lock earlier and with collection lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48524&quot;&gt;&lt;del&gt;SERVER-48524&lt;/del&gt;&lt;/a&gt; indexbuildentryhelpers::removeIndexBuildEntry() requires callers to obtain collection lock on config.system.indexBuilds&lt;/p&gt;

&lt;p&gt;This improves index build semantics for aborts in the context of stepdowns and interrupts.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/df5735431344335eeb8197a8e073aa6967d40a12&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/df5735431344335eeb8197a8e073aa6967d40a12&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3880749" author="xgen-internal-githook" created="Wed, 16 Jun 2021 11:26:25 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48524&quot; title=&quot;Acquire config.system.indexBuilds lock earlier and with collection lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48524&quot;&gt;&lt;del&gt;SERVER-48524&lt;/del&gt;&lt;/a&gt; indexbuildentryhelpers::removeIndexBuildEntry() uses DBHelpers::findById() instead of findOne()&lt;/p&gt;

&lt;p&gt;This allows us to locate the index build in config.system.indexBuilds() using the &lt;em&gt;id&lt;/em&gt; index directly instead&lt;br/&gt;
of going through the query planner, which is still subject to interrupts.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/db7a7a0f167e97ac43415265f0f4bcec07dd2ca6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/db7a7a0f167e97ac43415265f0f4bcec07dd2ca6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3880409" author="xgen-internal-githook" created="Wed, 16 Jun 2021 08:29:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48524&quot; title=&quot;Acquire config.system.indexBuilds lock earlier and with collection lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48524&quot;&gt;&lt;del&gt;SERVER-48524&lt;/del&gt;&lt;/a&gt; indexbuildentryhelpers::removeIndexBuildEntry() accepts CollectionPtr&lt;br/&gt;
Branch: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34632&quot; title=&quot;config.chunks change to config.cache.chunks creates a collection long name after upgrade&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34632&quot;&gt;SERVER-34632&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4f929f5bcbd13f2dbd347b27c2b3ee0e8abfa417&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4f929f5bcbd13f2dbd347b27c2b3ee0e8abfa417&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3879044" author="xgen-internal-githook" created="Tue, 15 Jun 2021 17:12:20 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Benety Goh&apos;, &apos;email&apos;: &apos;benety@mongodb.com&apos;, &apos;username&apos;: &apos;benety&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48524&quot; title=&quot;Acquire config.system.indexBuilds lock earlier and with collection lock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48524&quot;&gt;&lt;del&gt;SERVER-48524&lt;/del&gt;&lt;/a&gt; indexbuildentryhelpers::removeIndexBuildEntry() accepts CollectionPtr&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4f929f5bcbd13f2dbd347b27c2b3ee0e8abfa417&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4f929f5bcbd13f2dbd347b27c2b3ee0e8abfa417&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2397744">SERVER-79176</issuekey>
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            <issuekey id="1345033">SERVER-48062</issuekey>
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