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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-27499] Race condition in SyncSourceResolver shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-27499</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;shutdown() can be called between the times that a callback starts and the point when it schedules more work. In particular it can happen before _scheduleFetcher() acquires its mutex so it needs to check for shutdown.&lt;/p&gt;

&lt;p&gt;Also, every call to _isShuttingDown() is fishy since shutdown() can be called as soon as it returns.&lt;/p&gt;</description>
                <environment></environment>
        <key id="340674">SERVER-27499</key>
            <summary>Race condition in SyncSourceResolver shutdown</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-repl">Backlog - Replication Team</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                            <label>neweng</label>
                    </labels>
                <created>Thu, 22 Dec 2016 19:47:02 +0000</created>
                <updated>Tue, 6 Dec 2022 04:08:59 +0000</updated>
                                                                            <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1586540" author="siyuan.zhou@10gen.com" created="Fri, 2 Jun 2017 23:50:57 +0000"  >&lt;p&gt;There was a similar problem in bgsync in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-28490&quot; title=&quot;Check the state after acquiring the lock in bgsync&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-28490&quot;&gt;&lt;del&gt;SERVER-28490&lt;/del&gt;&lt;/a&gt;, but it has nothing to do with catchup.&lt;/p&gt;</comment>
                            <comment id="1481641" author="judah.schvimer" created="Fri, 20 Jan 2017 20:54:17 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=siyuan.zhou&quot; class=&quot;user-hover&quot; rel=&quot;siyuan.zhou&quot;&gt;siyuan.zhou&lt;/a&gt;, please consider this when working on the catchup timeout work. &lt;/p&gt;

&lt;p&gt;We also should investigate how serious this is and how often we block waiting for SyncSourceResolver shutdown.&lt;/p&gt;</comment>
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            <issuekey id="367634">SERVER-28490</issuekey>
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            <issuekey id="432890">SERVER-31262</issuekey>
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