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    <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-67723] SessionCatalogMongoD reaper can interrupt expired internal transaction sessions for retryable writes that are still in use</title>
                <link>https://jira.mongodb.org/browse/SERVER-67723</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The SessionCatalogMongoD reaper has the &lt;a href=&quot;https://github.com/10gen/mongo/blob/e9c76b4e8a2f206bbb0e5b0e6c00a4207d7c0ead/src/mongo/db/session_catalog_mongod.cpp#L311-L316&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;logic&lt;/a&gt; for deleting the on-disk state for every expired internal transaction session for retryable write that it think is no longer in use, regardless of whether its corresponding logical session has expired. To determine if an expired transaction session is still in use, it &lt;a href=&quot;https://github.com/10gen/mongo/blob/e9c76b4e8a2f206bbb0e5b0e6c00a4207d7c0ead/src/mongo/db/session_catalog_mongod.cpp#L375-L378&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;relies&lt;/a&gt; this &lt;a href=&quot;https://github.com/10gen/mongo/blob/e9c76b4e8a2f206bbb0e5b0e6c00a4207d7c0ead/src/mongo/db/session_catalog_mongod.cpp#L214-L215&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;set&lt;/a&gt; of expired transaction sessions not reaped from the SessionCatalog. The limitation around this is that the set only gets populated with expired transaction session ids whose logical session has &lt;a href=&quot;https://github.com/10gen/mongo/blob/e9c76b4e8a2f206bbb0e5b0e6c00a4207d7c0ead/src/mongo/db/session_catalog_mongod.cpp#L157&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;expired and been removed from the config.system.sessions collection&lt;/a&gt;. So if a logical session hasn&apos;t expired but its latest internal transaction session for retryable write has expired (&amp;#42;), the reaper would delete the on-disk of that transaction session and that would cause any operation running on that transaction session to get interrupted. One of the few rare cases where (&amp;#42;) can happen is where the transaction has committed or aborted but is stuck waiting for write concern. This showed up in&#160;BF-25724 as this test sets the TransactionRecordMinimumLifetimeMinutes to 0 (default 30 mins).&#160;&lt;/p&gt;

&lt;p&gt;One solution is to make the SessionCatalogMongoD reaper not delete the on-disk state for any expired internal transaction session for retryable write until its logical session has expired just like it does for all other kinds of transaction sessions. That is, we will completely rely on the &lt;a href=&quot;https://github.com/10gen/mongo/blob/77e9ff7fd5e822ed2c560db2f601648a6dd58abf/src/mongo/db/session_catalog.cpp#L355&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;best-effort eager reaping in the SessionCatalog&lt;/a&gt; to delete the on-disk state for internal transaction session for old retryable writes.&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2080936">SERVER-67723</key>
            <summary>SessionCatalogMongoD reaper can interrupt expired internal transaction sessions for retryable writes that are still in use</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="cheahuychou.mao@mongodb.com">Cheahuychou Mao</assignee>
                                    <reporter username="cheahuychou.mao@mongodb.com">Cheahuychou Mao</reporter>
                        <labels>
                            <label>sharding-nyc-subteam3</label>
                    </labels>
                <created>Fri, 1 Jul 2022 00:41:20 +0000</created>
                <updated>Sun, 29 Oct 2023 21:36:07 +0000</updated>
                            <resolved>Thu, 7 Jul 2022 21:47:07 +0000</resolved>
                                                    <fixVersion>6.0.1</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4707671" author="xgen-internal-githook" created="Wed, 27 Jul 2022 05:04:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;mao.cheahuychou@gmail.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67723&quot; title=&quot;SessionCatalogMongoD reaper can interrupt expired internal transaction sessions for retryable writes that are still in use&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67723&quot;&gt;&lt;del&gt;SERVER-67723&lt;/del&gt;&lt;/a&gt; Make the SessionCatalogMongoD reaper not delete the on-disk state for any transaction session until its logical session has expired&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 338062b6a22668dcb1cf919de5dd2e9f3eea0221)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/83b60779ae6a5f0b80c4a50d175de97e2a91082c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/83b60779ae6a5f0b80c4a50d175de97e2a91082c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4664886" author="xgen-internal-githook" created="Thu, 7 Jul 2022 21:43:27 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Cheahuychou Mao&apos;, &apos;email&apos;: &apos;mao.cheahuychou@gmail.com&apos;, &apos;username&apos;: &apos;cheahuychou&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67723&quot; title=&quot;SessionCatalogMongoD reaper can interrupt expired internal transaction sessions for retryable writes that are still in use&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67723&quot;&gt;&lt;del&gt;SERVER-67723&lt;/del&gt;&lt;/a&gt; Make the SessionCatalogMongoD reaper not delete the on-disk state for any transaction session until its logical session has expired&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/338062b6a22668dcb1cf919de5dd2e9f3eea0221&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/338062b6a22668dcb1cf919de5dd2e9f3eea0221&lt;/a&gt;&lt;/p&gt;</comment>
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