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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-66139] Stuck on oplog visibility when inserting directly into oplog namespace in standalone mode</title>
                <link>https://jira.mongodb.org/browse/SERVER-66139</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Writing directly to the oplog namespace in standalone mode causes any readers of the oplog to be stuck waiting for oplog visibility.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64125&quot; title=&quot;MDB server sets the commit/durable timestamps equal to the stable timestamp&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64125&quot;&gt;&lt;del&gt;SERVER-64125&lt;/del&gt;&lt;/a&gt; changed the insert path to not set a timestamp in this case. That causes &lt;tt&gt;WiredTigerOplogManager::triggerOplogVisibilityUpdate&lt;/tt&gt; not to be called because &lt;tt&gt;WiredTigerRecoveryUnit::_isTimestamped&lt;/tt&gt; is false. Any reader waits forever for oplog visibility that never happens.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2038247">SERVER-66139</key>
            <summary>Stuck on oplog visibility when inserting directly into oplog namespace in standalone mode</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Tue, 3 May 2022 12:22:59 +0000</created>
                <updated>Sun, 29 Oct 2023 21:38:41 +0000</updated>
                            <resolved>Mon, 16 May 2022 19:17:23 +0000</resolved>
                                                    <fixVersion>6.0.0-rc6</fixVersion>
                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>13</watches>
                                                                                                                <comments>
                            <comment id="4551081" author="xgen-internal-githook" created="Mon, 16 May 2022 19:19:58 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66139&quot; title=&quot;Stuck on oplog visibility when inserting directly into oplog namespace in standalone mode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66139&quot;&gt;&lt;del&gt;SERVER-66139&lt;/del&gt;&lt;/a&gt; Disable oplog visibility in standalone mode&lt;/p&gt;

&lt;p&gt;(cherry picked from commit fbdcf79b38b141aa89d7b38ddcf40d4065c4c2ae)&lt;br/&gt;
Branch: v6.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/04e49a5d48ac6e9486f196806efae1ed11d79948&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/04e49a5d48ac6e9486f196806efae1ed11d79948&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4549497" author="xgen-internal-githook" created="Mon, 16 May 2022 13:07:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66139&quot; title=&quot;Stuck on oplog visibility when inserting directly into oplog namespace in standalone mode&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66139&quot;&gt;&lt;del&gt;SERVER-66139&lt;/del&gt;&lt;/a&gt; Disable oplog visibility in standalone mode&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fbdcf79b38b141aa89d7b38ddcf40d4065c4c2ae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fbdcf79b38b141aa89d7b38ddcf40d4065c4c2ae&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4526584" author="milkie" created="Wed, 4 May 2022 18:31:19 +0000"  >&lt;p&gt;I think that fix should be fine.  I&apos;m surprised that the oplog namespace in standalone mode isn&apos;t already behaving like a regular capped collection; I think it used work that way for mmapV1 at least.&lt;/p&gt;</comment>
                            <comment id="4526422" author="henrik.edin" created="Wed, 4 May 2022 17:50:08 +0000"  >&lt;p&gt;My proposed fix will make a Collection on the oplog namespace behave like a regular (capped) Collection in standalone mode. No special visibility and users can read everything. That is what we need I think. Just unsure about your comment &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=milkie%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;milkie@mongodb.com&quot;&gt;milkie@mongodb.com&lt;/a&gt;, such behavior should be ok for shared restore and we don&apos;t need a new procedure?&lt;/p&gt;</comment>
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