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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-45382] indexbg_restart_secondary.js can race processing a commitIndexBuild oplog entry and interrupting an index build due to shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-45382</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When secondaries receive exceptions during index builds,&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/index_builds_coordinator.cpp#L1518&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;they rethrow immediately&lt;/a&gt;. This results in the index build also getting torn down immediately, because &lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/index_builds_coordinator.cpp#L1315&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;we call&#160;abortIndexBuildWithoutCleanup() while tearing down the index build&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Once the index build thread tears down, it&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/catalog/index_builds_manager.cpp#L301&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;unregisters itself&lt;/a&gt;. If the oplog applier is concurrently processing of the commitIndexBuild oplog entry, the call to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/repl/oplog.cpp#L939&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;abortIndexBuild&lt;/a&gt; will throw a NoSuchKey&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/index_builds_coordinator.cpp#L500&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;error here&lt;/a&gt;. We&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/176cc95d069b1d8a48bebca7872f293d014936f5/src/mongo/db/repl/oplog.cpp#L873&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;ignore NoSuchKey&lt;/a&gt;, so the commitIndexBuild gets processed and the stable timestamp is allowed to advance.&lt;/p&gt;

&lt;p&gt;Upon restarting, the unfinished index build will never be completed because the &quot;commitIndexBuild&quot; has already been processed without successfully committing the index.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1077714">SERVER-45382</key>
            <summary>indexbg_restart_secondary.js can race processing a commitIndexBuild oplog entry and interrupting an index build due to shutdown</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="louis.williams@mongodb.com">Louis Williams</assignee>
                                    <reporter username="louis.williams@mongodb.com">Louis Williams</reporter>
                        <labels>
                    </labels>
                <created>Mon, 6 Jan 2020 21:56:33 +0000</created>
                <updated>Sun, 29 Oct 2023 22:13:38 +0000</updated>
                            <resolved>Wed, 22 Jan 2020 15:33:43 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2740438" author="xgen-internal-githook" created="Sat, 18 Jan 2020 01:22:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Louis Williams&apos;, &apos;email&apos;: &apos;louis.williams@mongodb.com&apos;, &apos;username&apos;: &apos;louiswilliams&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45382&quot; title=&quot;indexbg_restart_secondary.js can race processing a commitIndexBuild oplog entry and interrupting an index build due to shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45382&quot;&gt;&lt;del&gt;SERVER-45382&lt;/del&gt;&lt;/a&gt; indexbg_restart_secondary.js should shutdown secondary normally&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/044e97ded5fe32ed79910d58c45f5339cb7da46c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/044e97ded5fe32ed79910d58c45f5339cb7da46c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2715532" author="louis.williams" created="Thu, 9 Jan 2020 22:54:26 +0000"  >&lt;p&gt;This is actually just a test issue. In actual shutdown, we stop the replication coodinator (and batch applier threads) before we kill all operations:&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/9cc6478f77febe70b10742e0e92514942936bef3/src/mongo/db/db.cpp#L985-L997&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/9cc6478f77febe70b10742e0e92514942936bef3/src/mongo/db/db.cpp#L985-L997&lt;/a&gt;.&lt;/p&gt;</comment>
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                                        <issuelink>
            <issuekey id="1037074">SERVER-44953</issuekey>
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