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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-75834] Accessing `MirrorMaestroImpl::_random` should be thread-safe</title>
                <link>https://jira.mongodb.org/browse/SERVER-75834</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72373&quot; title=&quot;Ban `rand`&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72373&quot;&gt;&lt;del&gt;SERVER-72373&lt;/del&gt;&lt;/a&gt; modified &lt;tt&gt;MirrorMaestro&lt;/tt&gt; to use &lt;tt&gt;PseudoRandom&lt;/tt&gt; to pick a normalized subset of eligible hosts. &lt;tt&gt;PseudoRandom&lt;/tt&gt;, however, is not thread-safe and concurrent accesses could result in read-after-write data races. Since &lt;tt&gt;MirrorMaestro&lt;/tt&gt; is accessing &lt;tt&gt;PseudoRandom&lt;/tt&gt; through executor threads, we can either use a synchronization primitive or make instances of &lt;tt&gt;PseudoRandom&lt;/tt&gt; thread-local to avoid read-after-write races.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2309589">SERVER-75834</key>
            <summary>Accessing `MirrorMaestroImpl::_random` should be thread-safe</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="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</assignee>
                                    <reporter username="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Apr 2023 14:26:49 +0000</created>
                <updated>Sun, 29 Oct 2023 21:23:24 +0000</updated>
                            <resolved>Sat, 8 Apr 2023 13:16:54 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5333494" author="xgen-internal-githook" created="Fri, 7 Apr 2023 23:51:02 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-75834&quot; title=&quot;Accessing `MirrorMaestroImpl::_random` should be thread-safe&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-75834&quot;&gt;&lt;del&gt;SERVER-75834&lt;/del&gt;&lt;/a&gt; Accessing `MirrorMaestroImpl::_random` should be thread-safe&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/c37705e5590787469c38d099e52bb9f01cc04043&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/c37705e5590787469c38d099e52bb9f01cc04043&lt;/a&gt;&lt;/p&gt;</comment>
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