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        <build-date>13-04-2023</build-date>
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            <title>[SERVER-10719] Warn if network RTT to any config server is (relatively) high</title>
                <link>https://jira.mongodb.org/browse/SERVER-10719</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Since it&apos;s somewhat reasonable to place one of the config servers into Disaster Recovery Zone (which has high latency), the metadata upgrade procedure can take a very long time because of the high network latency.&lt;/p&gt;

&lt;p&gt;For the config database with a large number of chunks (100k), the upgrade process can take many many hours (6+) when latency to one of the config servers is seconds. (We have seen it take 30-40 min all config servers are within milliseconds ping with that large number of chunks)&lt;/p&gt;

&lt;p&gt;We should be able to display a warning (esp. during the upgrade process) if we detect that ping time to the config servers, or any config server relative to the other(s), is too high.&lt;/p&gt;</description>
                <environment></environment>
        <key id="89052">SERVER-10719</key>
            <summary>Warn if network RTT to any config server is (relatively) high</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="9">Done</resolution>
                                        <assignee username="backlog-server-sharding">[DO NOT USE] Backlog - Sharding Team</assignee>
                                    <reporter username="alex.komyagin@mongodb.com">Alexander Komyagin</reporter>
                        <labels>
                            <label>upgrading</label>
                    </labels>
                <created>Mon, 9 Sep 2013 16:25:15 +0000</created>
                <updated>Tue, 6 Dec 2022 05:18:04 +0000</updated>
                            <resolved>Thu, 6 Sep 2018 14:54:51 +0000</resolved>
                                                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1995179" author="kaloian.manassiev" created="Thu, 6 Sep 2018 14:54:51 +0000"  >&lt;p&gt;Starting in version 3.2 with the introduction of CSRS, one node with high latency is unlikely to impact metadata operations. And since it since it is a replica set, now the replication lag metric offers a good indication into this and is available in cloud manager.&lt;/p&gt;

&lt;p&gt;For improving monitoring to replica sets, please consider opening a drivers ticket.&lt;/p&gt;</comment>
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