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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-22960] find command checks for shard version outside of collection lock</title>
                <link>https://jira.mongodb.org/browse/SERVER-22960</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The implementation of find command on mongod &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r3.2.3/src/mongo/db/commands/find_cmd.cpp#L246&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;checks&lt;/a&gt; the shard version outside of collection lock. This means that the collection might change after it has been checked, but before the command actually starts returning results and thus it may return results, which do not belong to the shard being queried.&lt;/p&gt;

&lt;p&gt;This should be easy to fix by moving the collection lock up.&lt;/p&gt;</description>
                <environment></environment>
        <key id="269888">SERVER-22960</key>
            <summary>find command checks for shard version outside of collection lock</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="9">Done</resolution>
                                        <assignee username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</assignee>
                                    <reporter username="kaloian.manassiev@mongodb.com">Kaloian Manassiev</reporter>
                        <labels>
                    </labels>
                <created>Fri, 4 Mar 2016 01:52:14 +0000</created>
                <updated>Thu, 14 Apr 2016 15:17:53 +0000</updated>
                            <resolved>Fri, 4 Mar 2016 14:44:03 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1193097" author="kaloian.manassiev" created="Fri, 4 Mar 2016 14:44:03 +0000"  >&lt;p&gt;The check for shard version is actually further down this code path, so no checking is happening outside of a lock.&lt;/p&gt;</comment>
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