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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-13288] Document that sharded transactions always perform some majority writes</title>
                <link>https://jira.mongodb.org/browse/DOCS-13288</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;p&gt;We document &lt;a href=&quot;https://docs.mongodb.com/manual/core/transactions/#shard-configuration-restriction&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; that sharded transactions are not allowed with &lt;tt&gt;writeConcernMajorityJournalDefault:false&lt;/tt&gt;. I think it&apos;s also important to specify that regardless of the user&apos;s requested writeConcern, commitTransaction for a sharded transaction must perform some component writes with writeConcern {&lt;tt&gt;w: &quot;majority&quot;, j: true&lt;/tt&gt;. If we don&apos;t specify this, users may be confused as to why running commitTransaction with a weaker writeConcern doesn&apos;t significantly speed up their sharded transactions.&lt;/p&gt;

&lt;p&gt;(Additionally, until &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-37364&quot; title=&quot;Coordinator should return the decision to the client as soon as the decision is durable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-37364&quot;&gt;&lt;del&gt;SERVER-37364&lt;/del&gt;&lt;/a&gt; is complete, there is no behavior difference for weaker writeConcerns, but I don&apos;t think we need to document this.)&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="1048754">DOCS-13288</key>
            <summary>Document that sharded transactions always perform some majority writes</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="13201">Fixed</resolution>
                                        <assignee username="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="tess.avitabile@mongodb.com">Tess Avitabile</reporter>
                        <labels>
                    </labels>
                <created>Wed, 11 Dec 2019 19:28:02 +0000</created>
                <updated>Mon, 30 Oct 2023 20:30:10 +0000</updated>
                            <resolved>Thu, 11 Jun 2020 19:21:44 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="3205863" author="kay.kim@10gen.com" created="Thu, 11 Jun 2020 19:21:44 +0000"  >&lt;p&gt;Forgot to close&lt;/p&gt;</comment>
                            <comment id="2867598" author="xgen-internal-githook" created="Tue, 11 Feb 2020 22:40:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kay-kim&apos;, &apos;name&apos;: &apos;Kay Kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13288&quot; title=&quot;Document that sharded transactions always perform some majority writes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13288&quot;&gt;&lt;del&gt;DOCS-13288&lt;/del&gt;&lt;/a&gt;: sharded txn commit includes components that use w:majority&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/9371eb4528dbea94471c9f0c234d157a10c4486d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/9371eb4528dbea94471c9f0c234d157a10c4486d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2752867" author="xgen-internal-githook" created="Wed, 22 Jan 2020 15:43:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;kay-kim&apos;, &apos;name&apos;: &apos;Kay Kim&apos;, &apos;email&apos;: &apos;kay.kim@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13288&quot; title=&quot;Document that sharded transactions always perform some majority writes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13288&quot;&gt;&lt;del&gt;DOCS-13288&lt;/del&gt;&lt;/a&gt;: sharded txn commit includes components that use w:majority&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/9371eb4528dbea94471c9f0c234d157a10c4486d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/9371eb4528dbea94471c9f0c234d157a10c4486d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2752866" author="xgen-internal-githook" created="Wed, 22 Jan 2020 15:43:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;kay.kim@10gen.com&apos;, &apos;username&apos;: &apos;kay-kim&apos;, &apos;name&apos;: &apos;Kay Kim&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-13288&quot; title=&quot;Document that sharded transactions always perform some majority writes&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-13288&quot;&gt;&lt;del&gt;DOCS-13288&lt;/del&gt;&lt;/a&gt;: sharded txn commit includes components that use w:majority&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/235d1b2fb27c213d37d19a449e77b12d926a7443&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/235d1b2fb27c213d37d19a449e77b12d926a7443&lt;/a&gt;&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="1002765">SERVER-44638</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="611093">SERVER-37364</issuekey>
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