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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-49695] Clarify and correct synchronization of isOplogTruncateAfterPointBeingUsedForPrimary</title>
                <link>https://jira.mongodb.org/browse/SERVER-49695</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The variable _isPrimary in replication_consistency_markers_impl.cpp is used to signal whether or not to write out the oplog truncation point during journal flushing.  However, it is not synchronized with the actual write to the truncation point.  The code which clears it attempts to work around this by interrupting and waiting for the journal flusher, but the journal flusher is not safely interruptible at this point.  &lt;/p&gt;</description>
                <environment></environment>
        <key id="1413502">SERVER-49695</key>
            <summary>Clarify and correct synchronization of isOplogTruncateAfterPointBeingUsedForPrimary</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="matthew.russotto@mongodb.com">Matthew Russotto</reporter>
                        <labels>
                    </labels>
                <created>Fri, 17 Jul 2020 17:14:43 +0000</created>
                <updated>Sun, 29 Oct 2023 22:05:38 +0000</updated>
                            <resolved>Sat, 29 Aug 2020 02:32:28 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                    <fixVersion>4.4.5</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3630659" author="xgen-internal-githook" created="Tue, 23 Feb 2021 17:51:24 +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-49695&quot; title=&quot;Clarify and correct synchronization of isOplogTruncateAfterPointBeingUsedForPrimary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49695&quot;&gt;&lt;del&gt;SERVER-49695&lt;/del&gt;&lt;/a&gt; The waitUntilDurable() codepath should not fassert success of oplogTruncateAfterPoint update&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 57ed7ccb3ea367c8f59eeb6cb9160421c56372ac)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4477891e30a89af42bbb277de4aa9592e57fd25e&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4477891e30a89af42bbb277de4aa9592e57fd25e&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3365237" author="xgen-internal-githook" created="Sat, 29 Aug 2020 03:17:07 +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-49695&quot; title=&quot;Clarify and correct synchronization of isOplogTruncateAfterPointBeingUsedForPrimary&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-49695&quot;&gt;&lt;del&gt;SERVER-49695&lt;/del&gt;&lt;/a&gt; The waitUntilDurable() codepath should not fassert success of oplogTruncateAfterPoint update&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/57ed7ccb3ea367c8f59eeb6cb9160421c56372ac&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/57ed7ccb3ea367c8f59eeb6cb9160421c56372ac&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3362350" author="dianna.hohensee" created="Thu, 27 Aug 2020 15:50:03 +0000"  >&lt;p&gt;I think it would be best to make a new &lt;tt&gt;ReplicationConsistencyMarkers&lt;/tt&gt; class private function that calls the &lt;tt&gt;ReplicationConsistencyMarkers::setOplogTruncateAfterPoint()&lt;/tt&gt; logic without the &lt;tt&gt;fassert&lt;/tt&gt;, and modify the existing &lt;tt&gt;setOplogTruncateAfterPoint()&lt;/tt&gt; function to be a wrapper thereof. I believe we only need to worry about &lt;tt&gt;ReplicationConsistencyMarkers&lt;/tt&gt; functions fassert&apos;ing and not any direct external callers of &lt;tt&gt;setOplogTruncateAfterPoint()&lt;/tt&gt;.&lt;/p&gt;</comment>
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