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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>
    </build-info>


<item>
            <title>[DOCS-13345] Investigate changes in SERVER-45098: Test application of RWCDefaults to all commands</title>
                <link>https://jira.mongodb.org/browse/DOCS-13345</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;    Normally, the default writeConcern will be applied to all incoming operations that accept WC, including admin commands.  However, there is a subset of admin commands referred to as &quot;sharding admin commands&quot;, which are different because they perform operations on the config server primary with w:majority (they can be found by grepping for calls to appendMajorityWriteConcern).&lt;/p&gt;

&lt;p&gt;The current behaviour for sharding admin commands is:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;supplied WC { w: X, wtimeout: Y }:  apply { w: &quot;majority&quot;, wtimeout: Y }&lt;/li&gt;
	&lt;li&gt;no supplied WC:  apply { w: &quot;majority&quot;, wtimeout: 60000 }&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;This ticket has not changed this behaviour.&lt;/p&gt;

&lt;p&gt;However, the behaviour for these commands in the presence of default writeConcern has a subtle adjustment.  If the default WC includes wtimeout less than 60000, then for sharding admin commands only the applied WC will have its wtimeout upgraded to 60000.  To put this another way, for sharding admin commands the minimum wtimeout &lt;em&gt;&lt;b&gt;from default writeConcern&lt;/b&gt;&lt;/em&gt; is 60000.  Spelling this out into the different cases:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;supplied WC { w: X, wtimeout: Y }:  apply { w: &quot;majority&quot;, wtimeout: Y }&lt;/li&gt;
	&lt;li&gt;no supplied WC and no default WC:  apply { w: &quot;majority&quot;, wtimeout: 60000 }&lt;/li&gt;
	&lt;li&gt;no supplied WC and default WC { w: X, wtimeout: Y }:  apply { w: &quot;majority&quot;, wtimeout: max(60000, Y) }, ie:
	&lt;ul&gt;
		&lt;li&gt;for Y &amp;lt;= 60000:  apply { w: &quot;majority&quot;, wtimeout: 60000 }&lt;/li&gt;
		&lt;li&gt;for Y &amp;gt; 60000:  apply { w: &quot;majority&quot;, wtimeout: Y }&lt;/li&gt;
	&lt;/ul&gt;
	&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Again, this is all only for sharding admin commands, and other commands/ops are not subject to this behaviour.&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;    null&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="1098383">DOCS-13345</key>
            <summary>Investigate changes in SERVER-45098: Test application of RWCDefaults to all commands</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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="backlog-server-pm">Backlog - Core Eng Program Management Team</reporter>
                        <labels>
                            <label>docs-sharding</label>
                    </labels>
                <created>Thu, 16 Jan 2020 02:26:23 +0000</created>
                <updated>Mon, 13 Nov 2023 18:11:52 +0000</updated>
                            <resolved>Thu, 28 May 2020 18:11:40 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                    <fixVersion>Server_Docs_20231030</fixVersion>
                    <fixVersion>Server_Docs_20231106</fixVersion>
                    <fixVersion>Server_Docs_20231105</fixVersion>
                    <fixVersion>Server_Docs_20231113</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3134687" author="ravind.kumar" created="Thu, 28 May 2020 18:11:40 +0000"  >&lt;p&gt;The work w.r.t. global default &lt;tt&gt;wtimeout&lt;/tt&gt; and sharding admin commands was done as part of DOCSP-7544. See &lt;span class=&quot;error&quot;&gt;&amp;#91;this commit&amp;#93;&lt;/span&gt;(&lt;a href=&quot;https://github.com/mongodb/docs/commit/4ed15e0b01232b24de9878604a936cdae34a0a16#diff-5647b554183a3604f97c3ca7ca311f2fR198-R211&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/4ed15e0b01232b24de9878604a936cdae34a0a16#diff-5647b554183a3604f97c3ca7ca311f2fR198-R211&lt;/a&gt;)&lt;/p&gt;</comment>
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            <issuekey id="1049734">SERVER-45098</issuekey>
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