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    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-34571] Invariant fails in destructor of MigrationChunkClonerSourceLegacy on shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-34571</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When we try to cleanup the MigrationSourceManager on error (cleanupOnError), we also clean up the MigrationChunkClonerSourceLegacy object (call cancelClone, which calls _cleanup), and then the MigrationChunkClonerSourceLegacy object is destructed. In the destructor, there&apos;s an invariant&lt;/p&gt;
&lt;p/&gt;
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&lt;p/&gt;

&lt;p&gt;_deleteNotifyExec is a unique_ptr to a PlanExecutor object. In theory, in _cleanup(), it should be reset and destructed - hence the invariant. However, if an exception is thrown in _cleanup before this happens, and then ~MigrationChunkClonerSourceLegacy gets called, the program will abort since we&apos;re throwing an exception while already throwing an exception, which is A Bad Thing&#8482;. In the case of BF-8673 this seems to be what happened, presumably due to one of the functions in _cleanup failing due to shutdown being in progress. We could potentially fix this by wrapping these functions in a try-catch, or instead of using _deleteNotifyExec.reset() we could just std::move(_deleteNotifyExec) into the local scope so that _deleteNotifyExec will indeed be empty no matter what, and this invariant won&apos;t fail.&lt;/p&gt;</description>
                <environment></environment>
        <key id="531154">SERVER-34571</key>
            <summary>Invariant fails in destructor of MigrationChunkClonerSourceLegacy on 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="matthew.saltz@mongodb.com">Matthew Saltz</assignee>
                                    <reporter username="matthew.saltz@mongodb.com">Matthew Saltz</reporter>
                        <labels>
                    </labels>
                <created>Thu, 19 Apr 2018 17:50:11 +0000</created>
                <updated>Sun, 29 Oct 2023 22:32:34 +0000</updated>
                            <resolved>Mon, 23 Apr 2018 14:36:01 +0000</resolved>
                                                    <fixVersion>3.4.15</fixVersion>
                    <fixVersion>3.6.5</fixVersion>
                    <fixVersion>3.7.6</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1871839" author="xgen-internal-githook" created="Mon, 23 Apr 2018 19:56:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;matthew.saltz@mongodb.com&apos;, &apos;name&apos;: &apos;Matthew Saltz&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34571&quot; title=&quot;Invariant fails in destructor of MigrationChunkClonerSourceLegacy on shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34571&quot;&gt;&lt;del&gt;SERVER-34571&lt;/del&gt;&lt;/a&gt; Ensure _deleteNotifyExec in MigrationChunkClonerSourceLegacy always reset on cleanup&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 179985c786cea234b65946ff647debfdfdbed511)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2dff7f1f50540af8aa1b982b41b4dd752068c89e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2dff7f1f50540af8aa1b982b41b4dd752068c89e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1871658" author="xgen-internal-githook" created="Mon, 23 Apr 2018 17:44:24 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;matthew.saltz@mongodb.com&apos;, &apos;name&apos;: &apos;Matthew Saltz&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34571&quot; title=&quot;Invariant fails in destructor of MigrationChunkClonerSourceLegacy on shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34571&quot;&gt;&lt;del&gt;SERVER-34571&lt;/del&gt;&lt;/a&gt; Ensure _deleteNotifyExec in MigrationChunkClonerSourceLegacy always reset on cleanup&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 179985c786cea234b65946ff647debfdfdbed511)&lt;br/&gt;
Branch: v3.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4af95dc93dbe306778e94f1d487f4e9afa57c8a9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4af95dc93dbe306778e94f1d487f4e9afa57c8a9&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1871327" author="xgen-internal-githook" created="Mon, 23 Apr 2018 14:34:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;matthew.saltz@mongodb.com&apos;, &apos;name&apos;: &apos;Matthew Saltz&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34571&quot; title=&quot;Invariant fails in destructor of MigrationChunkClonerSourceLegacy on shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34571&quot;&gt;&lt;del&gt;SERVER-34571&lt;/del&gt;&lt;/a&gt; Ensure _deleteNotifyExec in MigrationChunkClonerSourceLegacy always reset on cleanup&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/179985c786cea234b65946ff647debfdfdbed511&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/179985c786cea234b65946ff647debfdfdbed511&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1870222" author="matthew.saltz" created="Fri, 20 Apr 2018 16:35:06 +0000"  >&lt;p&gt;CR: &lt;a href=&quot;https://mongodbcr.appspot.com/197680001/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mongodbcr.appspot.com/197680001/&lt;/a&gt;&lt;/p&gt;</comment>
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