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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-47003] MaxTimeMSExceeded on _configsvrMoveChunk can lead to blocking future migrations for that chunk</title>
                <link>https://jira.mongodb.org/browse/SERVER-47003</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If moveChunk is sent with maxTimeMS, the following scenario can occur:&lt;br/&gt;
1. The config server sends moveChunk to the shard. The shard starts running it.&lt;br/&gt;
2. The config server hits maxTimeMS, which then causes it to fail to delete the relevant config.migrations doc, which happens in the destructor of the object created &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2b50e18f0ea527894f2e1f71ffc7afc0f41c87bf/src/mongo/db/s/balancer/migration_manager.cpp#L176&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, since the OperationContext has been interrupted. &lt;/p&gt;

&lt;p&gt;If the config server gets another moveChunk attempt for that range, it will &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2b50e18f0ea527894f2e1f71ffc7afc0f41c87bf/src/mongo/db/s/balancer/migration_manager.cpp#L176&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;fail with DuplicateKeyError on config.migrations&lt;/a&gt;. config.migrations is keyed on namespace and the min value of the range being moved, so this will happen indefinitely for any chunk with the same min value.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1283037">SERVER-47003</key>
            <summary>MaxTimeMSExceeded on _configsvrMoveChunk can lead to blocking future migrations for that chunk</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="silvia.surroca@mongodb.com">Silvia Surroca</assignee>
                                    <reporter username="matthew.saltz@mongodb.com">Matthew Saltz</reporter>
                        <labels>
                            <label>sharding-common-backlog</label>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Thu, 19 Mar 2020 20:51:13 +0000</created>
                <updated>Sun, 29 Oct 2023 22:10:31 +0000</updated>
                            <resolved>Fri, 30 Dec 2022 12:23:31 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5083079" author="JIRAUSER1268536" created="Fri, 30 Dec 2022 12:21:27 +0000"  >&lt;p&gt;This bug was fixed by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60922&quot; title=&quot;Use `config.migrations` to persist the command recovery documents generated by BalancerCommandsScheduler.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60922&quot;&gt;&lt;del&gt;SERVER-60922&lt;/del&gt;&lt;/a&gt; on v5.2&lt;/p&gt;

&lt;p&gt;The existence of duplicated entry in config.migrations is managed &lt;a href=&quot;https://github.com/10gen/mongo/blob/d0d9e95c07df276f4fa3cef07982803d689da5c7/src/mongo/db/s/balancer/balancer_commands_scheduler_impl.cpp#L107-L108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;&lt;/p&gt;</comment>
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                <issuelinks>
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                                            <outwardlinks description="related to">
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            <issuekey id="1348727">SERVER-48153</issuekey>
        </issuelink>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="1906349">SERVER-60922</issuekey>
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