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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-61309] Fix time-series bucket lock reacquisition logic</title>
                <link>https://jira.mongodb.org/browse/SERVER-61309</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Currently we maintain a set of bucket pointers, and we refer to the bucket from a WriteBatch by the pointer. This isn&apos;t very robust in the face of pointer re-use by the memory allocator, and given that some situations can result in batches being used after the buckets have been released, we want to ensure we are using the bucket OID as the primary reference rather than the pointer.&lt;/p&gt;

&lt;p&gt;Because bucket reacquisition happens in a number of places, and the non-deterministic nature, it&apos;s hard to identify an exact set of circumstances under which we would run into this issue. The linked BFs and HELP tickets should shed some additional light on the possible symptoms. Among them are deadlock, inconsistent state (with similarities to use-after-free bugs), and crashes. The stacktraces will likely show one or more of the following methods:&lt;/p&gt;
&lt;p/&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="1920365">SERVER-61309</key>
            <summary>Fix time-series bucket lock reacquisition logic</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="dan.larkin-york@mongodb.com">Dan Larkin-York</assignee>
                                    <reporter username="dan.larkin-york@mongodb.com">Dan Larkin-York</reporter>
                        <labels>
                            <label>time-series</label>
                    </labels>
                <created>Mon, 8 Nov 2021 14:26:52 +0000</created>
                <updated>Sun, 29 Oct 2023 21:46:21 +0000</updated>
                            <resolved>Tue, 9 Nov 2021 15:59:21 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                    <fixVersion>5.0.5</fixVersion>
                    <fixVersion>5.1.1</fixVersion>
                                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="4179344" author="xgen-internal-githook" created="Wed, 10 Nov 2021 00:55:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dan Larkin-York&apos;, &apos;email&apos;: &apos;dan.larkin-york@mongodb.com&apos;, &apos;username&apos;: &apos;dhly-etc&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61309&quot; title=&quot;Fix time-series bucket lock reacquisition logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61309&quot;&gt;&lt;del&gt;SERVER-61309&lt;/del&gt;&lt;/a&gt; Fix time-series bucket lock reacquisition logic&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fddc7333aa7a3be423566463ee92b4444f0c3ca1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fddc7333aa7a3be423566463ee92b4444f0c3ca1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4179143" author="xgen-internal-githook" created="Tue, 9 Nov 2021 22:42:18 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dan Larkin-York&apos;, &apos;email&apos;: &apos;dan.larkin-york@mongodb.com&apos;, &apos;username&apos;: &apos;dhly-etc&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61309&quot; title=&quot;Fix time-series bucket lock reacquisition logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61309&quot;&gt;&lt;del&gt;SERVER-61309&lt;/del&gt;&lt;/a&gt; Fix time-series bucket lock reacquisition logic&lt;br/&gt;
Branch: v5.1&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b6cbe729c481a9745b5898ced38ea440c7ea7741&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b6cbe729c481a9745b5898ced38ea440c7ea7741&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4177736" author="xgen-internal-githook" created="Tue, 9 Nov 2021 15:38:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dan Larkin-York&apos;, &apos;email&apos;: &apos;dan.larkin-york@mongodb.com&apos;, &apos;username&apos;: &apos;dhly-etc&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-61309&quot; title=&quot;Fix time-series bucket lock reacquisition logic&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-61309&quot;&gt;&lt;del&gt;SERVER-61309&lt;/del&gt;&lt;/a&gt; Fix time-series bucket lock reacquisition logic&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e35972a5a426c05f7af28a91b9ec3625794de60a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e35972a5a426c05f7af28a91b9ec3625794de60a&lt;/a&gt;&lt;/p&gt;</comment>
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