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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <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-47033] StreamableReplicaSetMonitor::onTopologyDescriptionChangedEvent should check if the instance is dropped</title>
                <link>https://jira.mongodb.org/browse/SERVER-47033</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;need to add the following guard at the start of StreamableReplicaSetMonitor::onTopologyDescriptionChangedEvent&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;
&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;if (_isDropped.load())&lt;/td&gt;
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&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;return;&lt;/td&gt;
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</description>
                <environment></environment>
        <key id="1284565">SERVER-47033</key>
            <summary>StreamableReplicaSetMonitor::onTopologyDescriptionChangedEvent should check if the instance is dropped</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="lamont.nelson@mongodb.com">Lamont Nelson</assignee>
                                    <reporter username="lamont.nelson@mongodb.com">Lamont Nelson</reporter>
                        <labels>
                    </labels>
                <created>Sat, 21 Mar 2020 00:18:17 +0000</created>
                <updated>Sun, 29 Oct 2023 22:10:29 +0000</updated>
                            <resolved>Mon, 23 Mar 2020 21:31:48 +0000</resolved>
                                                    <fixVersion>4.4.0-rc0</fixVersion>
                                    <component>Networking</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="2993166" author="lamont.nelson" created="Mon, 23 Mar 2020 21:31:27 +0000"  >&lt;p&gt;This was fixed as part of&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47029&quot; title=&quot;Fix race when streamable RSM updates the shard registry after topology change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47029&quot;&gt;&lt;del&gt;SERVER-47029&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2991045" author="lamont.nelson" created="Sat, 21 Mar 2020 00:57:59 +0000"  >&lt;p&gt;This is related to BF-16565. The log shows thats a onTopologyChangedEvent has a segfault as the instance is being shutdown.&lt;/p&gt;

&lt;p&gt;backtrace:&lt;br/&gt;
#0  0x00007faca728f640 in vtable for boost::log::v2s_mt_posix::attributes::constant&amp;lt;mongo::logv2::LogDomain::Internal const*&amp;gt;::impl ()&lt;br/&gt;
#1  0x00007faca5aabb00 in mongo::ReplicaSetChangeNotifier::onConfirmedSet (this=this@entry=0x7faca9ea0020, connectionString=..., primary=..., passives=...)&lt;br/&gt;
    at src/mongo/client/replica_set_change_notifier.cpp:126&lt;br/&gt;
#2  0x00007faca5acc57f in mongo::StreamableReplicaSetMonitor::onTopologyDescriptionChangedEvent (this=&amp;lt;optimized out&amp;gt;, topologyId=...,&lt;br/&gt;
    previousDescription=..., newDescription=...)&lt;br/&gt;
    at /opt/mongodbtoolchain/revisions/toolchain_builder_rhel62_patch_57df61bfe08e9c2805a38d201c5cd6c0ea414778_5daee4e830661503f51984bf_19_10_22_11_16_02/stow/gcc-v3.cZb/include/c++/8.2.0/bits/basic_string.h:927&lt;br/&gt;
#3  0x00007faca5c0586b in mongo::sdam::TopologyEventsPublisher::_sendEvent (this=&amp;lt;optimized out&amp;gt;, listener=..., event=...)&lt;br/&gt;
    at /opt/mongodbtoolchain/revisions/toolchain_builder_rhel62_patch_57df61bfe08e9c2805a38d201c5cd6c0ea414778_5daee4e830661503f51984bf_19_10_22_11_16_02/stow/gcc-v3.cZb/include/c++/8.2.0/ext/atomicity.h:96&lt;br/&gt;
#4  0x00007faca5c06410 in mongo::sdam::TopologyEventsPublisher::_nextDelivery (this=0x7facb0326790)&lt;br/&gt;
    at /opt/mongodbtoolchain/revisions/toolchain_builder_rhel62_patch_57df61bfe08e9c2805a38d201c5cd6c0ea414778_5daee4e830661503f51984bf_19_10_22_11_16_02/stow/gcc-v3.cZb/include/c++/8.2.0/ext/atomicity.h:96&lt;br/&gt;
#5  0x00007faca5c16224 in mongo::unique_function&amp;lt;void (mongo::Status)&amp;gt;::operator()(mongo::Status) const (args#0=..., this=&amp;lt;optimized out&amp;gt;)&lt;br/&gt;
    at src/mongo/util/invariant.h:64&lt;br/&gt;
#6  mongo::executor::TaskExecutor::&amp;lt;lambda(const mongo::executor::TaskExecutor::CallbackArgs&amp;amp;)&amp;gt;::operator() (args=..., __closure=&amp;lt;optimized out&amp;gt;)&lt;br/&gt;
    at src/mongo/executor/task_executor.cpp:41&lt;br/&gt;
#7  mongo::unique_function&amp;lt;void(const mongo::executor::TaskExecutor::CallbackArgs&amp;amp;)&amp;gt;::callRegularVoid&amp;lt;mongo::executor::TaskExecutor::schedule(mongo::OutOfLine--Type &amp;lt;RET&amp;gt; for more, q to quit, &lt;/p&gt;</comment>
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