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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-42559] Race in WaitWithOpTimeEarlierThanLowestQueued causes it to fail</title>
                <link>https://jira.mongodb.org/browse/SERVER-42559</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Most of the time, when the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/3e2d338ebfbb17f26a1ab7dcbb447fbac29e549b/src/mongo/db/s/wait_for_majority_service_test.cpp#L147&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;2nd wait is queued&lt;/a&gt;, the background thread has not picked up the first wait yet, so it just cut in the line as expected. However, if the 2nd request is called and the background thread is already in the middle of waiting, it will get signalled instead. Before &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42335&quot; title=&quot;ShutdownShouldCancelQueuedRequests cpp test can ignore kill signal&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42335&quot;&gt;&lt;del&gt;SERVER-42335&lt;/del&gt;&lt;/a&gt;, it will cause the future to become ready since it was not propagating the signal properly. After &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42335&quot; title=&quot;ShutdownShouldCancelQueuedRequests cpp test can ignore kill signal&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42335&quot;&gt;&lt;del&gt;SERVER-42335&lt;/del&gt;&lt;/a&gt;, it will cause the test to hang because it is waiting for the future of the 2nd wait and was not expecting the 1st wait to &quot;consume&quot; the wait.&lt;/p&gt;</description>
                <environment></environment>
        <key id="881160">SERVER-42559</key>
            <summary>Race in WaitWithOpTimeEarlierThanLowestQueued causes it to fail</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="randolph@mongodb.com">Randolph Tan</assignee>
                                    <reporter username="randolph@mongodb.com">Randolph Tan</reporter>
                        <labels>
                    </labels>
                <created>Wed, 31 Jul 2019 19:41:27 +0000</created>
                <updated>Sun, 29 Oct 2023 22:18:31 +0000</updated>
                            <resolved>Thu, 1 Aug 2019 14:45:18 +0000</resolved>
                                                    <fixVersion>4.2.1</fixVersion>
                    <fixVersion>4.3.1</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2419634" author="xgen-internal-githook" created="Fri, 13 Sep 2019 15:22:30 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;randolph@mongodb.com&apos;, &apos;name&apos;: &apos;Randolph Tan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42559&quot; title=&quot;Race in WaitWithOpTimeEarlierThanLowestQueued causes it to fail&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42559&quot;&gt;&lt;del&gt;SERVER-42559&lt;/del&gt;&lt;/a&gt; Make the WaitWithOpTimeEarlierThanLowestQueued test run more predictably&lt;/p&gt;

&lt;p&gt;by making the test thread wait for the WaitForMajorityService thread pick up the 1st request before proceeding&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 2f815dbeb37750d5fcde13469322657780077e62)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8e851fa90cff1eea6781ca3ef29950b05ec1ce6f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8e851fa90cff1eea6781ca3ef29950b05ec1ce6f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2354173" author="xgen-internal-githook" created="Thu, 1 Aug 2019 14:08:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Randolph Tan&apos;, &apos;email&apos;: &apos;randolph@10gen.com&apos;, &apos;username&apos;: &apos;renctan&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42559&quot; title=&quot;Race in WaitWithOpTimeEarlierThanLowestQueued causes it to fail&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42559&quot;&gt;&lt;del&gt;SERVER-42559&lt;/del&gt;&lt;/a&gt; Make the WaitWithOpTimeEarlierThanLowestQueued test run more predictably&lt;/p&gt;

&lt;p&gt;by making the test thread wait for the WaitForMajorityService thread pick up the 1st request before proceeding&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2f815dbeb37750d5fcde13469322657780077e62&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2f815dbeb37750d5fcde13469322657780077e62&lt;/a&gt;&lt;/p&gt;</comment>
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