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    <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-11210] Suggest that users should be avoiding frequent restarts of mongoS</title>
                <link>https://jira.mongodb.org/browse/DOCS-11210</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;At present chunk splits are initiated by a &lt;tt&gt;mongoS&lt;/tt&gt; when the amount of data written into the chunk (tracked by the mongoS) exceeds the threshold of 20% of the maximum chunk size.&lt;/p&gt;

&lt;p&gt;When &lt;tt&gt;mongoS&lt;/tt&gt; is restarted, that re-sets the data written counter, which in return can delay splits causing chunks to grow beyond the splitting threshold and even beyond the maximum chunk size threshold. Eventually such chunks can be split in a cascading fashion, adding (potentially significant) balancing overhead.&lt;/p&gt;

&lt;p&gt;The documentation should suggest that:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;frequent restarts of  &lt;tt&gt;mongoS&lt;/tt&gt; should be avoided, when possible&lt;/li&gt;
	&lt;li&gt;the &lt;tt&gt;flushRouterConfig&lt;/tt&gt; command should only be executed in exceptional circumstances, when there is a good reason to do so. It should not be run for prevention purposes on regular basis&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="482958">DOCS-11210</key>
            <summary>Suggest that users should be avoiding frequent restarts of mongoS</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="dmitry.ryabtsev@mongodb.com">Dmitry Ryabtsev</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Jan 2018 02:25:26 +0000</created>
                <updated>Mon, 30 Oct 2023 21:02:44 +0000</updated>
                                                            <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4940634" author="edu.bot" created="Mon, 31 Oct 2022 16:08:24 +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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