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    <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-65208] Check the top-chunk before refreshing the local metadata</title>
                <link>https://jira.mongodb.org/browse/SERVER-65208</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The identification of the &lt;a href=&quot;https://github.com/10gen/mongo/blob/09654db603334e7fe422c702f05c7675d00870aa/src/mongo/db/s/split_chunk.cpp#L223-L259&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;range containing the top-chunk&lt;/a&gt; is performed by the shard after &lt;a href=&quot;https://github.com/10gen/mongo/blob/09654db603334e7fe422c702f05c7675d00870aa/src/mongo/db/s/split_chunk.cpp#L158-L191&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;committing the split to the config server&lt;/a&gt; and after &lt;a href=&quot;https://github.com/10gen/mongo/blob/09654db603334e7fe422c702f05c7675d00870aa/src/mongo/db/s/split_chunk.cpp#L193-L194&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;refreshing the local metadata&lt;/a&gt;. That logic needs to access the collection data, so it instantiates an &lt;tt&gt;AutoGetCollection&lt;/tt&gt; to lock on the collection. As the local shard version might be updated as a consequence of the metadata refresh, it could no longer match with the shard version sent by the router. In this case, &lt;tt&gt;AutoGetCollection&lt;/tt&gt; would throw a &lt;em&gt;stale config error&lt;/em&gt; causing the &lt;em&gt;splitChunk&lt;/em&gt; command to fail.&lt;/p&gt;

&lt;p&gt;A simple solution to resolve the problem is to anticipate the identification of the range containing the top-chunk before refreshing the local metadata.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2015657">SERVER-65208</key>
            <summary>Check the top-chunk before refreshing the local metadata</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="antonio.fuschetto@mongodb.com">Antonio Fuschetto</assignee>
                                    <reporter username="antonio.fuschetto@mongodb.com">Antonio Fuschetto</reporter>
                        <labels>
                    </labels>
                <created>Mon, 4 Apr 2022 07:25:43 +0000</created>
                <updated>Sun, 29 Oct 2023 21:40:06 +0000</updated>
                            <resolved>Mon, 4 Apr 2022 09:38:30 +0000</resolved>
                                                    <fixVersion>6.0.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4453871" author="xgen-internal-githook" created="Mon, 4 Apr 2022 09:32:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Antonio Fuschetto&apos;, &apos;email&apos;: &apos;antonio.fuschetto@mongodb.com&apos;, &apos;username&apos;: &apos;afuschetto&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65208&quot; title=&quot;Check the top-chunk before refreshing the local metadata&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65208&quot;&gt;&lt;del&gt;SERVER-65208&lt;/del&gt;&lt;/a&gt; Check the top-chunk before refreshing the local metadata&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/93b609f94dd58452ba28f277a6739b7740b9980a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/93b609f94dd58452ba28f277a6739b7740b9980a&lt;/a&gt;&lt;/p&gt;</comment>
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