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    <language>en-us</language>    <build-info>
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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-57229] killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&apos;t reset the opCtx between finding the opId and running killOp </title>
                <link>https://jira.mongodb.org/browse/SERVER-57229</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;it&apos;s possible for the JournalFlusher to miss the killOp interrupt by timing the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf4a58e088dce7a15e7706fd65e0f4073f2d8cff/src/mongo/db/storage/control/journal_flusher.cpp#L107-L108&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;opCtx reset&lt;/a&gt; right: the killOp marks the JournalFlusher&apos;s opCtx killed, but then the JournalFlusher resets the opCtx and never throws &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf4a58e088dce7a15e7706fd65e0f4073f2d8cff/src/mongo/db/storage/control/journal_flusher.cpp#L122-L132&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the expected error&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf4a58e088dce7a15e7706fd65e0f4073f2d8cff/jstests/noPassthrough/killOp_against_journal_flusher_thread.js#L18-L28&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The opId that the test fetches via currentOp&lt;/a&gt; is associated with the JournalFlusher&apos;s opCtx at that moment, and then the opCtx has changed by the time that the test tries to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf4a58e088dce7a15e7706fd65e0f4073f2d8cff/jstests/noPassthrough/killOp_against_journal_flusher_thread.js#L30-L31&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;kill the journal flusher thread via killOp&lt;/a&gt;. It&apos;s a small window of time.&lt;/p&gt;

&lt;p&gt;The test sets the JournalFlusher interval (how frequently it runs) to &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cf4a58e088dce7a15e7706fd65e0f4073f2d8cff/jstests/noPassthrough/killOp_against_journal_flusher_thread.js#L11&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;500 ms&lt;/a&gt;. We could decrease the frequency (higher interval), but then we also need the run the JournalFlusher to run in order to get that error thrown.&lt;/p&gt;

&lt;p&gt;I recommend a new FAILPOINT, to stop the JournalFlusher before the currentOp and then release it after the killOp is sent.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1758359">SERVER-57229</key>
            <summary>killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&apos;t reset the opCtx between finding the opId and running killOp </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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                    </labels>
                <created>Wed, 26 May 2021 20:46:27 +0000</created>
                <updated>Sun, 29 Oct 2023 21:53:02 +0000</updated>
                            <resolved>Thu, 3 Jun 2021 16:55:56 +0000</resolved>
                                                    <fixVersion>5.0.4</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4107671" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:32:58 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="4087978" author="xgen-internal-githook" created="Mon, 27 Sep 2021 22:09:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dianna Hohensee&apos;, &apos;email&apos;: &apos;dianna.hohensee@mongodb.com&apos;, &apos;username&apos;: &apos;DiannaHohensee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57229&quot; title=&quot;killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&amp;#39;t reset the opCtx between finding the opId and running killOp &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57229&quot;&gt;&lt;del&gt;SERVER-57229&lt;/del&gt;&lt;/a&gt; killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&apos;t reset&lt;br/&gt;
the opCtx between finding the opId and running killOp&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 30d51c7a49a118805a78a1e8be70c6576f46569e)&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/42f9f06863b747d52728d299ef32124a5e71c47e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/42f9f06863b747d52728d299ef32124a5e71c47e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3857756" author="xgen-internal-githook" created="Thu, 3 Jun 2021 16:11:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dianna Hohensee&apos;, &apos;email&apos;: &apos;dianna.hohensee@mongodb.com&apos;, &apos;username&apos;: &apos;DiannaHohensee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57229&quot; title=&quot;killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&amp;#39;t reset the opCtx between finding the opId and running killOp &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57229&quot;&gt;&lt;del&gt;SERVER-57229&lt;/del&gt;&lt;/a&gt; killOp_against_journal_flusher_thread.js must ensure the JournalFlusher doesn&apos;t reset&lt;br/&gt;
the opCtx between finding the opId and running killOp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/30d51c7a49a118805a78a1e8be70c6576f46569e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/30d51c7a49a118805a78a1e8be70c6576f46569e&lt;/a&gt;&lt;/p&gt;</comment>
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