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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-15643] Add &quot;Change shard key is not supported for replica sets with arbiters&quot;</title>
                <link>https://jira.mongodb.org/browse/DOCS-15643</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;We should document considerations in &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/replica-set-arbiter/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.mongodb.com/docs/manual/core/replica-set-arbiter/&lt;/a&gt; &#160;for sharded clusters with arbiters so that it&apos;s very clear what the limitations of arbiters are.&lt;/p&gt;

&lt;p&gt;In&#160;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-64462&quot; title=&quot;&#26356;&#26032;shard key&#24182;abortTransaction&#24471;&#21040;&#25253;&#38169;&#24182;&#23548;&#33268;mongos hang&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-64462&quot;&gt;&lt;del&gt;SERVER-64462&lt;/del&gt;&lt;/a&gt;&#160; the issue (Changing shard keys errored for replica sets with an arbiter) was caused by unawareness of the fact that:&lt;/p&gt;
&lt;blockquote&gt;&lt;p&gt;transactions whose write operations span multiple shards will error and abort if any transaction operation reads from or writes to a shard that contains an arbiter.&lt;/p&gt;&lt;/blockquote&gt;
&lt;p&gt;The context has been documented in &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/transactions-sharded-clusters/?_ga=2.90799450.1715190077.1662989440-731116381.1660789216&amp;amp;_gac=1.88078058.1661278151.Cj0KCQjw9ZGYBhCEARIsAEUXITWmpk-ComccWc-BjE7liW8Ry2agvvE435JEu3aSOJeiM_WvIU6LFvwaAqMFEALw_wcB#arbiters&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;transactions-sharded-clusters&lt;/a&gt; we believe it would be helpful to add a similar context in &lt;a href=&quot;https://www.mongodb.com/docs/manual/core/replica-set-arbiter/#replica-set-arbiter&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replica-set-arbiter&lt;/a&gt; (The first link that shows up by googling &quot;MongoDB arbiters&quot;) to bring awareness of the limitation of using arbiters to users.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2143394">DOCS-15643</key>
            <summary>Add &quot;Change shard key is not supported for replica sets with arbiters&quot;</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="yuan.fang@mongodb.com">Yuan Fang</reporter>
                        <labels>
                            <label>backlog</label>
                            <label>feature</label>
                            <label>replication</label>
                            <label>sharding</label>
                    </labels>
                <created>Thu, 22 Sep 2022 15:58:04 +0000</created>
                <updated>Mon, 22 Jan 2024 16:20:29 +0000</updated>
                                            <version>5.0.4</version>
                                                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>4</watches>
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