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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-85167] Size storer can be flushed concurrently with being destructed for rollback</title>
                <link>https://jira.mongodb.org/browse/SERVER-85167</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/storage/wiredtiger/wiredtiger_session_cache.cpp#L498-L500&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The size storer gets flushed when a session is released to the session cache&lt;/a&gt;, which &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/storage/wiredtiger/wiredtiger_session_cache.cpp#L518-L521&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;happens when a session object is destructed&lt;/a&gt;. The operation context &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/operation_context.h#L820&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;owns a recovery unit&lt;/a&gt; which in turn &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/storage/wiredtiger/wiredtiger_recovery_unit.h#L258&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;owns a session&lt;/a&gt;, so operation context destruction can trigger a size storer flush. Further, certain threads like the FTDC collector &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/ftdc/collector.cpp#L72&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;construct and destruct an operation context&lt;/a&gt; when they run. However, when rolling back to the stable timestamp, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L2429&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the size storer gets replaced with a new one&lt;/a&gt;. Typically this is fine since &lt;a href=&quot;https://github.com/mongodb/mongo/blob/5036f607417cd3d760b40966b7701046b441e702/src/mongo/db/storage/storage_engine_impl.cpp#L1136&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;RTS holds the global exclusive lock&lt;/a&gt;, but in this operation context destruction case there are no locks being held. Thus we can end up with the size storer being flushed (by the operation context destruction) concurrently with it being destructed (by RTS replacing it with a new size storer).&lt;/p&gt;</description>
                <environment></environment>
        <key id="2544580">SERVER-85167</key>
            <summary>Size storer can be flushed concurrently with being destructed for rollback</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="wei.hu@mongodb.com">Wei Hu</assignee>
                                    <reporter username="gregory.noma@mongodb.com">Gregory Noma</reporter>
                        <labels>
                            <label>bkp</label>
                    </labels>
                <created>Fri, 12 Jan 2024 16:59:29 +0000</created>
                <updated>Wed, 31 Jan 2024 23:49:34 +0000</updated>
                            <resolved>Tue, 30 Jan 2024 23:27:29 +0000</resolved>
                                                    <fixVersion>7.0.6</fixVersion>
                    <fixVersion>5.0.25</fixVersion>
                    <fixVersion>6.0.14</fixVersion>
                    <fixVersion>8.0.0-rc0</fixVersion>
                    <fixVersion>7.3.0-rc2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="6057660" author="xgen-internal-githook" created="Wed, 31 Jan 2024 22:52:39 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wei Hu&apos;, &apos;email&apos;: &apos;wei.hu@mongodb.com&apos;, &apos;username&apos;: &apos;wh5a&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-85167&quot; title=&quot;Size storer can be flushed concurrently with being destructed for rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-85167&quot;&gt;&lt;del&gt;SERVER-85167&lt;/del&gt;&lt;/a&gt; Shut down WiredTigerSessionCache before rollback (#18443)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: b16e82ac6d5eeddeaa44a77215ccc412ffc3fbbd&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/db50ef61bfbcb1eae1d7f9687a517b1f029f2bc4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/db50ef61bfbcb1eae1d7f9687a517b1f029f2bc4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6054459" author="xgen-internal-githook" created="Tue, 30 Jan 2024 23:54:10 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wei Hu&apos;, &apos;email&apos;: &apos;wei.hu@mongodb.com&apos;, &apos;username&apos;: &apos;wh5a&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-85167&quot; title=&quot;Size storer can be flushed concurrently with being destructed for rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-85167&quot;&gt;&lt;del&gt;SERVER-85167&lt;/del&gt;&lt;/a&gt; Shut down WiredTigerSessionCache before rollback (#18443)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 09f92e421a1f13ce64798b83246f1151e347bf18&lt;br/&gt;
Branch: v7.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e121e6ef6573a65ef400c20bf2d5743e562d666f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e121e6ef6573a65ef400c20bf2d5743e562d666f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6054453" author="xgen-internal-githook" created="Tue, 30 Jan 2024 23:51:11 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wei Hu&apos;, &apos;email&apos;: &apos;wei.hu@mongodb.com&apos;, &apos;username&apos;: &apos;wh5a&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-85167&quot; title=&quot;Size storer can be flushed concurrently with being destructed for rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-85167&quot;&gt;&lt;del&gt;SERVER-85167&lt;/del&gt;&lt;/a&gt; Shut down WiredTigerSessionCache before rollback (#18443)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 9ef6da3fdebb6efa7ea3bea82e436b41a16b4385&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/eb8ad7edb470ef474ab682aa4d63876dad0497ca&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/eb8ad7edb470ef474ab682aa4d63876dad0497ca&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6054410" author="xgen-internal-githook" created="Tue, 30 Jan 2024 23:33:18 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wei Hu&apos;, &apos;email&apos;: &apos;wei.hu@mongodb.com&apos;, &apos;username&apos;: &apos;wh5a&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-85167&quot; title=&quot;Size storer can be flushed concurrently with being destructed for rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-85167&quot;&gt;&lt;del&gt;SERVER-85167&lt;/del&gt;&lt;/a&gt; Shut down WiredTigerSessionCache before rollback (#18443)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: 17f19349b9cfc17040ac6f314880d5a70f69b792&lt;br/&gt;
Branch: v7.3&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1a51ea6c578cf710621be586c9a4bc6ed907e085&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1a51ea6c578cf710621be586c9a4bc6ed907e085&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="6050823" author="xgen-internal-githook" created="Mon, 29 Jan 2024 22:06:46 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Wei Hu&apos;, &apos;email&apos;: &apos;wei.hu@mongodb.com&apos;, &apos;username&apos;: &apos;wh5a&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-85167&quot; title=&quot;Size storer can be flushed concurrently with being destructed for rollback&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-85167&quot;&gt;&lt;del&gt;SERVER-85167&lt;/del&gt;&lt;/a&gt; Shut down WiredTigerSessionCache before rollback (#18443)&lt;/p&gt;

&lt;p&gt;GitOrigin-RevId: afd40ca031889aefe4201cde26a5a4bf170fa38c&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/bb359547f80f777cd9b606f1cce1d1005f945f90&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/bb359547f80f777cd9b606f1cce1d1005f945f90&lt;/a&gt;&lt;/p&gt;</comment>
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