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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>[DOCS-13740] Investigate changes in SERVER-48578: Skip fast count enforcement on the oplog when running validate with enforceFastCount=true</title>
                <link>https://jira.mongodb.org/browse/DOCS-13740</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;h2&gt;&lt;a name=&quot;Description&quot;&gt;&lt;/a&gt;Description&lt;/h2&gt;

    &lt;div class=&quot;panel&quot; style=&quot;background-color: #c2d2c2;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;background-color: #239eb0;&quot;&gt;&lt;b&gt;Downstream Change Summary&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #c2d2c2;&quot;&gt;
&lt;p&gt;    &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44650&quot; title=&quot;New test mode for foreground validate that doesn&amp;#39;t silently fix fastcounts&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44650&quot;&gt;&lt;del&gt;SERVER-44650&lt;/del&gt;&lt;/a&gt; added the enforceFastCount mode to the validate command (documented by &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13667&quot; title=&quot;Investigate changes in SERVER-44650: New test mode for foreground validate that doesn&amp;#39;t silently fix fastcounts&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13667&quot;&gt;&lt;del&gt;DOCS-13667&lt;/del&gt;&lt;/a&gt;). This ticket makes it so that the fast count will not be enforced when validate is run on the oplog collection, even if enforceFastCount is set to true (in other words, the enforceFastCount flag is ignored when validate is run on local.oplog.rs).&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;h2&gt;&lt;a name=&quot;DescriptionofLinkedTicket&quot;&gt;&lt;/a&gt;Description of Linked Ticket&lt;/h2&gt;
&lt;p&gt;    Oplog writers only &lt;a href=&quot;https://github.com/mongodb/mongo/blob/7e41813dfa46b5357ca85a35afdd8ba86549cedd/src/mongo/db/catalog_raii.h#L244-L250&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;take a global IX lock&lt;/a&gt;, so the oplog can still be written to even during full validation despite its &lt;a href=&quot;https://github.com/mongodb/mongo/blob/7e41813dfa46b5357ca85a35afdd8ba86549cedd/src/mongo/db/catalog/validate_state.cpp#L73&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;collection X lock&lt;/a&gt;. This can cause validate to incorrectly &lt;a href=&quot;https://github.com/mongodb/mongo/blob/7e41813dfa46b5357ca85a35afdd8ba86549cedd/src/mongo/db/catalog/validate_adaptor.cpp#L389-L397&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;report an incorrect fast count&lt;/a&gt; on the oplog when run in enforceFastCount mode. Thus, even if enforceFastCount is specified, the fast count should not be enforced on the oplog.&lt;/p&gt;


&lt;h2&gt;&lt;a name=&quot;Scopeofchanges&quot;&gt;&lt;/a&gt;Scope of changes&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;ImpacttoOtherDocs&quot;&gt;&lt;/a&gt;Impact to Other Docs&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;MVP%28WorkandDate%29&quot;&gt;&lt;/a&gt;MVP (Work and Date)&lt;/h2&gt;

&lt;h2&gt;&lt;a name=&quot;Resources%28ScopeorDesignDocs%2CInvision%2Cetc.%29&quot;&gt;&lt;/a&gt;Resources (Scope or Design Docs, Invision, etc.)&lt;/h2&gt;
</description>
                <environment></environment>
        <key id="1395843">DOCS-13740</key>
            <summary>Investigate changes in SERVER-48578: Skip fast count enforcement on the oplog when running validate with enforceFastCount=true</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="13203">Gone away</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Jun 2020 14:47:24 +0000</created>
                <updated>Mon, 13 Nov 2023 18:04:28 +0000</updated>
                            <resolved>Tue, 17 Aug 2021 19:48:13 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4005107" author="jeffrey.allen" created="Tue, 17 Aug 2021 19:48:13 +0000"  >&lt;p&gt;Given that we did not document the change for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44650&quot; title=&quot;New test mode for foreground validate that doesn&amp;#39;t silently fix fastcounts&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44650&quot;&gt;&lt;del&gt;SERVER-44650&lt;/del&gt;&lt;/a&gt;, we will similarly not make any documentation updates for this ticket.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10320">
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            <issuekey id="1371176">SERVER-48578</issuekey>
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                            <issuelinktype id="10012">
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            <issuekey id="1362345">DOCS-13667</issuekey>
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