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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-57475] ShardingTest.stop must join top-level chunk migrations</title>
                <link>https://jira.mongodb.org/browse/SERVER-57475</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/src/mongo/shell/shardingtest.js#L423&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;SharingTest stop method&lt;/a&gt; is calling the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/src/mongo/shell/shardingtest.js#L426&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;check orphans hook&lt;/a&gt; without previously ensuring that top chunk migrations &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e154d9e78b86d3e32a03ad6ed2b4e165b8ad3bc2/src/mongo/db/s/chunk_splitter.cpp#L424-L428&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;triggered by the chunk splitter&lt;/a&gt; have finished.&lt;/p&gt;

&lt;p&gt;As a result, the following race condition can happen when the balancer is active:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;A migration stops on the receiving side, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/src/mongo/db/s/migration_destination_manager.cpp#L981-L991&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;waiting for an overlapping range deletion to end&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;The test finishes, ShardingTest.stop is called to shutdown the cluster&lt;/li&gt;
	&lt;li&gt;The check orphans hook &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/jstests/libs/check_orphans_are_deleted_helpers.js#L61-L62&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;waits for range deletions to drain&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Overlapping range deletion finishes:
	&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
		&lt;li&gt;The hook finishes waiting&lt;/li&gt;
		&lt;li&gt;A new pending &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/src/mongo/db/s/migration_destination_manager.cpp#L1001-L1016&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;range deletion is enqueued&lt;/a&gt; and the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/src/mongo/db/s/migration_destination_manager.cpp#L1060&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;clone of documents from the donor&lt;/a&gt; begins&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
	&lt;li&gt;The hook &lt;a href=&quot;https://github.com/mongodb/mongo/blob/285b313a0571fc6b648f123277cbdce3d0202a2d/jstests/libs/check_orphans_are_deleted_helpers.js#L76-L79&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;misidentifies&lt;/a&gt; the just cloned documents as orphans&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1769566">SERVER-57475</key>
            <summary>ShardingTest.stop must join top-level chunk migrations</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="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</assignee>
                                    <reporter username="pierlauro.sciarelli@mongodb.com">Pierlauro Sciarelli</reporter>
                        <labels>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Fri, 4 Jun 2021 23:18:20 +0000</created>
                <updated>Sun, 29 Oct 2023 21:52:34 +0000</updated>
                            <resolved>Thu, 10 Jun 2021 11:09:49 +0000</resolved>
                                    <version>5.0.0</version>
                    <version>5.1.0</version>
                    <version>4.4.6</version>
                                    <fixVersion>4.4.7</fixVersion>
                    <fixVersion>5.0.0-rc2</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4107156" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:18:56 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3880347" author="xgen-internal-githook" created="Wed, 16 Jun 2021 08:23:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57475&quot; title=&quot;ShardingTest.stop must join top-level chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57475&quot;&gt;&lt;del&gt;SERVER-57475&lt;/del&gt;&lt;/a&gt; (missing import) ShardingTest.stop must join top-level chunk migrations&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/91e0a56ce3eb2780d7c5947b6f2718a412c7a822&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/91e0a56ce3eb2780d7c5947b6f2718a412c7a822&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3880315" author="xgen-internal-githook" created="Wed, 16 Jun 2021 07:49:35 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57475&quot; title=&quot;ShardingTest.stop must join top-level chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57475&quot;&gt;&lt;del&gt;SERVER-57475&lt;/del&gt;&lt;/a&gt; ShardingTest.stop must join top-level chunk migrations&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/16e278b6d3a5322ffd08bd605b66905035b70fb4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/16e278b6d3a5322ffd08bd605b66905035b70fb4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3879151" author="xgen-internal-githook" created="Tue, 15 Jun 2021 17:49:05 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57475&quot; title=&quot;ShardingTest.stop must join top-level chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57475&quot;&gt;&lt;del&gt;SERVER-57475&lt;/del&gt;&lt;/a&gt; ShardingTest.stop must join top-level chunk migrations&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/75011d291e4382e65c0e20568dbe2e63e4b2b75c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/75011d291e4382e65c0e20568dbe2e63e4b2b75c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3870465" author="xgen-internal-githook" created="Thu, 10 Jun 2021 12:03:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57475&quot; title=&quot;ShardingTest.stop must join top-level chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57475&quot;&gt;&lt;del&gt;SERVER-57475&lt;/del&gt;&lt;/a&gt; ShardingTest.stop must join top-level chunk migrations&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f6ca20c9b81a0b839be71fddcacd9f3147d8b717&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f6ca20c9b81a0b839be71fddcacd9f3147d8b717&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3870391" author="xgen-internal-githook" created="Thu, 10 Jun 2021 10:57:39 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Pierlauro Sciarelli&apos;, &apos;email&apos;: &apos;pierlauro.sciarelli@mongodb.com&apos;, &apos;username&apos;: &apos;pierlauro&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57475&quot; title=&quot;ShardingTest.stop must join top-level chunk migrations&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57475&quot;&gt;&lt;del&gt;SERVER-57475&lt;/del&gt;&lt;/a&gt; ShardingTest.stop must join top-level chunk migrations&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0b8ac00f8d05b42aa70614114b3cafa29e02b4bd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0b8ac00f8d05b42aa70614114b3cafa29e02b4bd&lt;/a&gt;&lt;/p&gt;</comment>
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