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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-14772] [Server] Document the implications the state of the sharding metadata imposes on the serviceability of operations in a sharded cluster</title>
                <link>https://jira.mongodb.org/browse/DOCS-14772</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;At present the Server Documentation mentions very little on how the state of sharded cluster metadata view on individual shard members can affect whether a client operation succeeds or not.&lt;/p&gt;

&lt;p&gt;I believe we need a new section introduced that elaborates on that topic (either under &lt;a href=&quot;https://docs.mongodb.com/manual/core/sharded-cluster-query-router/#mongos&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the `mongos`&lt;/a&gt;&#160;or under &lt;a href=&quot;https://docs.mongodb.com/manual/core/sharded-cluster-shards/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the Shards&lt;/a&gt;&#160;articles, but I guess &lt;a href=&quot;https://docs.mongodb.com/manual/core/sharded-cluster-config-servers/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;the Config Server&lt;/a&gt;&#160;one could do as well).&lt;/p&gt;

&lt;p&gt;What this section should reflect on is:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;For an operation to succeed the view of the metadata on the specific shard member should be up-to-date (more precisely, the shard(s) and router issuing the request should have the same chunks view)&lt;/li&gt;
	&lt;li&gt;If the metadata is not up to date this can result in:&lt;/li&gt;
	&lt;li&gt;&#160; &#160; The operation failing with the &lt;tt&gt;StaleConfig&lt;/tt&gt; error&lt;/li&gt;
	&lt;li&gt;&#160; &#160; Metadata refresh process being triggered&lt;/li&gt;
	&lt;li&gt;Updating the metadata can introduce additional operational latency&lt;/li&gt;
	&lt;li&gt;In case with secondary reads, metadata refresh can take prolonged time if a significant replication lag is present. It is recommended to use &lt;tt&gt;maxStalenessSeconds&lt;/tt&gt; to minimize the impact of such a scenario&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1865049">DOCS-14772</key>
            <summary>[Server] Document the implications the state of the sharding metadata imposes on the serviceability of operations in a sharded cluster</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="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="joseph.dougherty@mongodb.com">Joseph Dougherty</assignee>
                                    <reporter username="dmitry.ryabtsev@mongodb.com">Dmitry Ryabtsev</reporter>
                        <labels>
                            <label>proactive</label>
                            <label>query</label>
                            <label>reopened</label>
                            <label>server-docs-bug-bash</label>
                            <label>sharding</label>
                            <label>triage</label>
                    </labels>
                <created>Wed, 1 Sep 2021 05:28:18 +0000</created>
                <updated>Mon, 8 Jan 2024 17:04:55 +0000</updated>
                            <resolved>Fri, 1 Dec 2023 19:15:53 +0000</resolved>
                                                    <fixVersion>7.3 Targeted</fixVersion>
                    <fixVersion>Server_Docs_[20240108]</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>2</votes>
                                    <watches>9</watches>
                                                                                                                <comments>
                            <comment id="5465191" author="JIRAUSER1264464" created="Wed, 31 May 2023 18:58:26 +0000"  >&lt;p&gt;Bumping priority due to linked HELP ticket.&#160;&lt;/p&gt;</comment>
                            <comment id="4951341" author="JIRAUSER1264463" created="Thu, 3 Nov 2022 11:58:15 +0000"  >&lt;p&gt;Thanks for the feedback &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=dmitry.ryabtsev%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;dmitry.ryabtsev@mongodb.com&quot;&gt;dmitry.ryabtsev@mongodb.com&lt;/a&gt;. We&apos;ll look into getting this addressed.&lt;/p&gt;</comment>
                            <comment id="4940295" author="edu.bot" created="Mon, 31 Oct 2022 16:02:55 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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