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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-53721] Race in failpoint tenantMigrationHangDuringCollectionClone</title>
                <link>https://jira.mongodb.org/browse/SERVER-53721</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This failpoint is error-prone. It is very hard to use it correctly because we check the conditions for the failpoint in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b366fe33ed8bf3135664e612a6e90e4cb2acffd9/src/mongo/db/repl/tenant_collection_cloner.cpp#L448&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;TenantCollectionCloner::insertDocumentsCallback&lt;/tt&gt;&lt;/a&gt;. But multiple calls of &lt;tt&gt;TenantCollectionCloner::insertDocumentsCallback&lt;/tt&gt; for different batches could run in parallel because it&apos;s &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b366fe33ed8bf3135664e612a6e90e4cb2acffd9/src/mongo/db/repl/tenant_collection_cloner.cpp#L371-L373&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;scheduled on an executor&lt;/a&gt;. So there could be races when using this failpoint together with a small &lt;tt&gt;collectionClonerBatchSize&lt;/tt&gt; because the check for the failpoint&apos;s conditions may not align with the batch boundaries.&lt;/p&gt;

&lt;p&gt;I think we can delete this failpoint but use &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b366fe33ed8bf3135664e612a6e90e4cb2acffd9/src/mongo/db/repl/tenant_collection_cloner.cpp#L448&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;tenantMigrationHangCollectionClonerAfterHandlingBatchResponse&lt;/tt&gt;&lt;/a&gt; instead.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1587648">SERVER-53721</key>
            <summary>Race in failpoint tenantMigrationHangDuringCollectionClone</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="lingzhi.deng@mongodb.com">Lingzhi Deng</assignee>
                                    <reporter username="lingzhi.deng@mongodb.com">Lingzhi Deng</reporter>
                        <labels>
                    </labels>
                <created>Tue, 12 Jan 2021 20:00:38 +0000</created>
                <updated>Sun, 29 Oct 2023 21:58:55 +0000</updated>
                            <resolved>Thu, 14 Jan 2021 00:38:25 +0000</resolved>
                                                    <fixVersion>4.9.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3563844" author="xgen-internal-githook" created="Wed, 13 Jan 2021 23:27:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lingzhi Deng&apos;, &apos;email&apos;: &apos;lingzhi.deng@mongodb.com&apos;, &apos;username&apos;: &apos;ldennis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-53721&quot; title=&quot;Race in failpoint tenantMigrationHangDuringCollectionClone&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-53721&quot;&gt;&lt;del&gt;SERVER-53721&lt;/del&gt;&lt;/a&gt;: Delete failpoint tenantMigrationHangDuringCollectionClone&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7482ea7be38855cba135b743a5a8a6d0d663626f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7482ea7be38855cba135b743a5a8a6d0d663626f&lt;/a&gt;&lt;/p&gt;</comment>
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