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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-50460] Use a mockable time source for shard_connection_tests.cpp</title>
                <link>https://jira.mongodb.org/browse/SERVER-50460</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/6894573909861cd11da06afad429373affe76bd0/src/mongo/s/client/shard_connection_test.cpp#L99-L110&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;checkNewConns&lt;/a&gt; utility function in shard_connection_test.cpp is creating new connections and tries to differentiate them from older ones using the creation timestamp. On certain hardware the clock resolution is not high enough and the new connections end up getting the same time, which makes the test unreliable.&lt;/p&gt;

&lt;p&gt;An attempt to fix this was already done by &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaloian.manassiev&quot; class=&quot;user-hover&quot; rel=&quot;kaloian.manassiev&quot;&gt;kaloian.manassiev&lt;/a&gt; (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34857&quot; title=&quot;`sharding_legacy_api_test` is flaky due to reliance on the system clock&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34857&quot;&gt;&lt;del&gt;SERVER-34857&lt;/del&gt;&lt;/a&gt;) back in 2018 for version 4.0.&lt;/p&gt;

&lt;p&gt;Moreover this test was recently removed in master (&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47426&quot; title=&quot;Remove legacy Sharding code (ParallelSortClusteredCursor/VersionManager/ShardConnection/ShardedConnectionInfo)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47426&quot;&gt;&lt;del&gt;SERVER-47426&lt;/del&gt;&lt;/a&gt;)&lt;/p&gt;

&lt;p&gt;Either we find out that this test is obsolete and can be now removed also from 4.4 or we will need to fix it in a proper way using a mockable time source to explicitly advance the time between different connection creations.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1449147">SERVER-50460</key>
            <summary>Use a mockable time source for shard_connection_tests.cpp</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-server-cluster-scalability">Backlog - Cluster Scalability</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                    </labels>
                <created>Fri, 21 Aug 2020 18:35:29 +0000</created>
                <updated>Tue, 12 Dec 2023 15:46:38 +0000</updated>
                                            <version>4.4.0</version>
                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
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