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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-45009] Transaction coordinator tasks should be robust to shutdown failing to step down</title>
                <link>https://jira.mongodb.org/browse/SERVER-45009</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Since shutdown tries to&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/c150b588cb4400e0324becd916de2a699988af99/src/mongo/db/db.cpp#L963&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;join the Grid&apos;s ThreadPoolTaskExecutors&lt;/a&gt; before &lt;a href=&quot;https://github.com/mongodb/mongo/blob/c150b588cb4400e0324becd916de2a699988af99/src/mongo/db/db.cpp#L973&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;interrupting all OperationContexts&lt;/a&gt;, a slow coordinator task running in one of the Grid&apos;s ThreadPoolTaskExecutors can delay shutdown.&lt;/p&gt;

&lt;p&gt;In particular, this manifests as hangs in tests that inject hangs into coordinator tasks.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1040806">SERVER-45009</key>
            <summary>Transaction coordinator tasks should be robust to shutdown failing to step down</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="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                            <label>sharding-4.4-stabilization</label>
                            <label>sharding-wfbf-day</label>
                    </labels>
                <created>Fri, 6 Dec 2019 22:11:57 +0000</created>
                <updated>Sun, 29 Oct 2023 22:14:18 +0000</updated>
                            <resolved>Mon, 16 Mar 2020 16:56:20 +0000</resolved>
                                                    <fixVersion>4.4.0-rc0</fixVersion>
                    <fixVersion>4.2.7</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3061088" author="xgen-internal-githook" created="Wed, 29 Apr 2020 18:47:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lamont Nelson&apos;, &apos;email&apos;: &apos;lamont.nelson@mongodb.com&apos;, &apos;username&apos;: &apos;lamontnelson&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45009&quot; title=&quot;Transaction coordinator tasks should be robust to shutdown failing to step down&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45009&quot;&gt;&lt;del&gt;SERVER-45009&lt;/del&gt;&lt;/a&gt;: Run onStepdown on the TransactionCoordinatorService to prevent tests from hanging at shutdown&lt;/p&gt;

&lt;p&gt;(cherry picked from commit e4736e7d9e327eafe19e1281bb3942978ca3c353)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7fd3c03c548d0febfa1e871e16d638513c417c79&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7fd3c03c548d0febfa1e871e16d638513c417c79&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3039541" author="esha.maharishi@10gen.com" created="Tue, 14 Apr 2020 19:36:05 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=steven.vannelli&quot; class=&quot;user-hover&quot; rel=&quot;steven.vannelli&quot;&gt;steven.vannelli&lt;/a&gt; thanks, that looks right to me.&lt;/p&gt;</comment>
                            <comment id="2993183" author="xgen-internal-githook" created="Mon, 23 Mar 2020 21:34:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;lamont.nelson@mongodb.com&apos;, &apos;name&apos;: &apos;Lamont Nelson&apos;, &apos;username&apos;: &apos;lamontnelson&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45009&quot; title=&quot;Transaction coordinator tasks should be robust to shutdown failing to step down&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45009&quot;&gt;&lt;del&gt;SERVER-45009&lt;/del&gt;&lt;/a&gt;: Run onStepdown on the TransactionCoordinatorService to prevent tests from hanging at shutdown&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7285b580e94252d7c66782a086458dd2f6d095c6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7285b580e94252d7c66782a086458dd2f6d095c6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2976637" author="xgen-internal-githook" created="Thu, 12 Mar 2020 22:07:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;lamontnelson&apos;, &apos;name&apos;: &apos;Lamont Nelson&apos;, &apos;email&apos;: &apos;lamont.nelson@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45009&quot; title=&quot;Transaction coordinator tasks should be robust to shutdown failing to step down&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45009&quot;&gt;&lt;del&gt;SERVER-45009&lt;/del&gt;&lt;/a&gt;: Run onStepdown on the TransactionCoordinatorService to prevent tests from hanging at shutdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e4736e7d9e327eafe19e1281bb3942978ca3c353&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e4736e7d9e327eafe19e1281bb3942978ca3c353&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2969337" author="lamont.nelson" created="Wed, 11 Mar 2020 22:27:18 +0000"  >&lt;p&gt;Code Review: &lt;a href=&quot;https://mongodbcr.appspot.com/562820001/#ps574550007&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mongodbcr.appspot.com/562820001/#ps574550007&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2664175" author="esha.maharishi@10gen.com" created="Thu, 26 Dec 2019 21:09:06 +0000"  >&lt;p&gt;One idea is to also call TransactionCoordinatorService::onStepDown, which currently is&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/01fc07d7e0ab23e88fc52fb9cb8bc46d890504d6/src/mongo/db/repl/replication_coordinator_external_state_impl.cpp#L701&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;called&lt;/a&gt; on stepdown, in the shutdown code&apos;s&#160;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/01fc07d7e0ab23e88fc52fb9cb8bc46d890504d6/src/mongo/db/db.cpp#L911-L916&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;catch blocks&lt;/a&gt; for stepdown failing.&lt;/p&gt;

&lt;p&gt;It looks like TransactionCoordinatorService::onStepDown is already robust to being called twice because of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/01fc07d7e0ab23e88fc52fb9cb8bc46d890504d6/src/mongo/db/s/transaction_coordinator_service.cpp#L238-L241&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this&lt;/a&gt; logic.&lt;/p&gt;</comment>
                    </comments>
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