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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-32592] Stepdown during migration cleanup can crash the source shard primary</title>
                <link>https://jira.mongodb.org/browse/SERVER-32592</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If the source shard primary steps down during a migration, it can trigger one of the &lt;tt&gt;cleanupOnError&lt;/tt&gt; scope guards in the &lt;tt&gt;MigrationSourceManager&lt;/tt&gt;. This calls &lt;tt&gt;MigrationManager::_cleanup&lt;/tt&gt;, which can call &lt;tt&gt;ShardServerCatalogCacheLoader::waitForCollectionFlush&lt;/tt&gt;, which will &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d729fe3fc6/src/mongo/db/s/shard_server_catalog_cache_loader.cpp#L392-L395&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;uassert if the node is no longer primary&lt;/a&gt;, and because this was called inside a scope guard and isn&apos;t caught, the exception &lt;a href=&quot;https://github.com/mongodb/mongo/blob/d729fe3fc6/src/mongo/util/scopeguard.h#L100-L104&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;triggers std::terminate()&lt;/a&gt; and crashes the server.&lt;/p&gt;

&lt;p&gt;Example failure: &lt;a href=&quot;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_rhel_62_64_bit_coverage_concurrency_sharded_with_stepdowns_and_balancer_patch_e4ba7722773f68d42a66af7439e585cc2136d003_5a4ceaabe3c3316388000020_18_01_03_14_41_42/0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://evergreen.mongodb.com/task/mongodb_mongo_master_enterprise_rhel_62_64_bit_coverage_concurrency_sharded_with_stepdowns_and_balancer_patch_e4ba7722773f68d42a66af7439e585cc2136d003_5a4ceaabe3c3316388000020_18_01_03_14_41_42/0&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="480321">SERVER-32592</key>
            <summary>Stepdown during migration cleanup can crash the source shard primary</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="jack.mulrow@mongodb.com">Jack Mulrow</assignee>
                                    <reporter username="jack.mulrow@mongodb.com">Jack Mulrow</reporter>
                        <labels>
                    </labels>
                <created>Mon, 8 Jan 2018 22:30:07 +0000</created>
                <updated>Mon, 30 Oct 2023 23:09:30 +0000</updated>
                            <resolved>Tue, 30 Jan 2018 15:16:02 +0000</resolved>
                                    <version>3.6.2</version>
                                    <fixVersion>3.6.3</fixVersion>
                    <fixVersion>3.7.2</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1791396" author="xgen-internal-githook" created="Thu, 1 Feb 2018 02:08:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;jack.mulrow@mongodb.com&apos;, &apos;name&apos;: &apos;Jack Mulrow&apos;, &apos;username&apos;: &apos;jsmulrow&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32592&quot; title=&quot;Stepdown during migration cleanup can crash the source shard primary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32592&quot;&gt;&lt;del&gt;SERVER-32592&lt;/del&gt;&lt;/a&gt; Ignore stepdown errors in MigrationSourceManager::cleanupOnError&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 1a8a0e35dca5f3a2bd4fa40a5e80576f1c72e221)&lt;br/&gt;
Branch: v3.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8111ba6001650c3df1d1cfe9e8bc9203a82e6586&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8111ba6001650c3df1d1cfe9e8bc9203a82e6586&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1789025" author="xgen-internal-githook" created="Tue, 30 Jan 2018 15:12:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;jack.mulrow@mongodb.com&apos;, &apos;name&apos;: &apos;Jack Mulrow&apos;, &apos;username&apos;: &apos;jsmulrow&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32592&quot; title=&quot;Stepdown during migration cleanup can crash the source shard primary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32592&quot;&gt;&lt;del&gt;SERVER-32592&lt;/del&gt;&lt;/a&gt; Ignore stepdown errors in MigrationSourceManager::cleanupOnError&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1a8a0e35dca5f3a2bd4fa40a5e80576f1c72e221&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1a8a0e35dca5f3a2bd4fa40a5e80576f1c72e221&lt;/a&gt;&lt;/p&gt;</comment>
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