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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-73026] LogCaptureSink: ensure no incoming traffic after stop is requested</title>
                <link>https://jira.mongodb.org/browse/SERVER-73026</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;Fix BF-26347&amp;#93;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;The boost::log API uses shared_ptr extensively.&lt;/p&gt;

&lt;p&gt;The call to stopCapturingLogMessages doesn&apos;t kill the sink, but it does remove it from the core, so it shouldn&apos;t be receiving new messages. But it will survive and continue delivering any log messages that it had already received but not yet delivered at the time it was detached, which is IIUC what&apos;s going on here.&lt;/p&gt;

&lt;p&gt;A couple of things that might work?&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;The stopCapturingLogMessages can be changed to wait for the sink to drain somehow.&lt;/li&gt;
	&lt;li&gt;The stopCapturingLogMessages call can quiesce the sink, so that its messages will no longer write to the vector.&lt;/li&gt;
	&lt;li&gt;Give boost full ownership of a proxy shared_ptr to sink. In stopCapturingLogMessages, call the core.detach_sink as usual, but we won&apos;t be pinning a reference to it anymore. When its destructor is called, we know boost is done with it and we can return.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Draft fix: &lt;a href=&quot;https://github.com/10gen/mongo/pull/9869&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo/pull/9869&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Confirmation of this behavior from Andrey Semashev, boost::log&apos;s maintainer.&lt;br/&gt;
&lt;a href=&quot;https://stackoverflow.com/questions/64160749/can-we-verify-that-boostlog-core-did-remove-sink&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://stackoverflow.com/questions/64160749/can-we-verify-that-boostlog-core-did-remove-sink&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2236823">SERVER-73026</key>
            <summary>LogCaptureSink: ensure no incoming traffic after stop is requested</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="billy.donahue@mongodb.com">Billy Donahue</assignee>
                                    <reporter username="billy.donahue@mongodb.com">Billy Donahue</reporter>
                        <labels>
                    </labels>
                <created>Thu, 19 Jan 2023 01:45:35 +0000</created>
                <updated>Sun, 29 Oct 2023 21:27:53 +0000</updated>
                            <resolved>Fri, 20 Jan 2023 00:51:48 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5125878" author="xgen-internal-githook" created="Fri, 20 Jan 2023 00:50:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Billy Donahue&apos;, &apos;email&apos;: &apos;billy.donahue@mongodb.com&apos;, &apos;username&apos;: &apos;BillyDonahue&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-73026&quot; title=&quot;LogCaptureSink: ensure no incoming traffic after stop is requested&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-73026&quot;&gt;&lt;del&gt;SERVER-73026&lt;/del&gt;&lt;/a&gt; disable log sink before detaching it&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/042b97b3e3f1423bdcf66a6436ea4e236565e61b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/042b97b3e3f1423bdcf66a6436ea4e236565e61b&lt;/a&gt;&lt;/p&gt;</comment>
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