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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-15066] Update page for Convert a Replica Set to a Sharded Cluster to mention application downtime</title>
                <link>https://jira.mongodb.org/browse/DOCS-15066</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The &lt;a href=&quot;https://docs.mongodb.com/manual/tutorial/convert-replica-set-to-replicated-shard-cluster/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Convert a Replica Set to a Sharded Cluster&lt;/a&gt; flow has users take ordinary replica set members out of rotation and start them up again with &amp;#45;&amp;#45;shardsvr. The user&apos;s application remains directly connected to the replica set during this step. A driver would have previously received signed $clusterTimes from the ordinary replica set members and will therefore attempt to gossip them back to the members after they&apos;ve been started up again with &amp;#45;&amp;#45;shardsvr. As noted in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60466&quot; title=&quot;Support drivers gossiping signed $clusterTimes to replica set --shardsvrs before addShard is run&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60466&quot;&gt;&lt;del&gt;SERVER-60466&lt;/del&gt;&lt;/a&gt;, the driver sending these signed $clusterTimes will result in application errors during the conversion process.&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;From the time starting after the replica set member are restarted with &amp;#45;&amp;#45;shardsvr and until the operator runs the addShard command, an application which had been connected beforehand to the replica set beforehand will continuously error with CannotVerifyAndSignLogicalTime.&lt;/li&gt;
	&lt;li&gt;Restarting the application after restarting all of the replica set members with &amp;#45;&amp;#45;shardsvr is a method to reset the driver&apos;s notion of the signed $clusterTime and restore availability.&lt;/li&gt;
	&lt;li&gt;It isn&apos;t possible to avoid downtime entirely. Either the application will error from CannotVerifyAndSignLogicalTime or will be unavailable from restarting the application servers.&lt;/li&gt;
	&lt;li&gt;We should probably reorder the steps so the &lt;em&gt;Deploy Config Server Replica Set and mongos&lt;/em&gt; section happens before the replica sets members are restarted with &amp;#45;&amp;#45;shardsvr. This way the addShard command can be run more promptly.&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="1970961">DOCS-15066</key>
            <summary>Update page for Convert a Replica Set to a Sharded Cluster to mention application downtime</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="13201">Fixed</resolution>
                                        <assignee username="joseph.dougherty@mongodb.com">Joseph Dougherty</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Tue, 25 Jan 2022 23:29:04 +0000</created>
                <updated>Mon, 30 Oct 2023 19:56:51 +0000</updated>
                            <resolved>Wed, 9 Feb 2022 14:48:46 +0000</resolved>
                                                    <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due>Fri, 11 Feb 2022 00:00:00 +0000</due>
                            <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4345177" author="xgen-internal-githook" created="Wed, 9 Feb 2022 15:33:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jmd-mongo&apos;, &apos;email&apos;: &apos;73852296+jmd-mongo@users.noreply.github.com&apos;, &apos;username&apos;: &apos;jmd-mongo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-15066&quot; title=&quot;Update page for Convert a Replica Set to a Sharded Cluster to mention application downtime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-15066&quot;&gt;&lt;del&gt;DOCS-15066&lt;/del&gt;&lt;/a&gt; refactor Convert Replica Set to Replicated Shard Cluster (#479) (#583)&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;refactor Convert Replica Set to Replicated Shard Cluster&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;removes Downtime sub-heading&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;fixes typo&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;let users know they may need to restart apps connected to secondaries&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates primary warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;clarifies primary warning and moves to the primary stepdown section&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/docs-mongodb-internal/commit/d51c140bbbd88dc86e67f4ebb0754e878f3ffc2a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/docs-mongodb-internal/commit/d51c140bbbd88dc86e67f4ebb0754e878f3ffc2a&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="4345157" author="xgen-internal-githook" created="Wed, 9 Feb 2022 15:28:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jmd-mongo&apos;, &apos;email&apos;: &apos;73852296+jmd-mongo@users.noreply.github.com&apos;, &apos;username&apos;: &apos;jmd-mongo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-15066&quot; title=&quot;Update page for Convert a Replica Set to a Sharded Cluster to mention application downtime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-15066&quot;&gt;&lt;del&gt;DOCS-15066&lt;/del&gt;&lt;/a&gt; refactor Convert Replica Set to Replicated Shard Cluster (#479) (#581)&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;refactor Convert Replica Set to Replicated Shard Cluster&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;removes Downtime sub-heading&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;fixes typo&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;let users know they may need to restart apps connected to secondaries&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates primary warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;clarifies primary warning and moves to the primary stepdown section&lt;br/&gt;
Branch: v5.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/docs-mongodb-internal/commit/962d77d90562017231870c2f177dba3fac777eee&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/docs-mongodb-internal/commit/962d77d90562017231870c2f177dba3fac777eee&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="4344961" author="xgen-internal-githook" created="Wed, 9 Feb 2022 14:48:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jmd-mongo&apos;, &apos;email&apos;: &apos;73852296+jmd-mongo@users.noreply.github.com&apos;, &apos;username&apos;: &apos;jmd-mongo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-15066&quot; title=&quot;Update page for Convert a Replica Set to a Sharded Cluster to mention application downtime&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-15066&quot;&gt;&lt;del&gt;DOCS-15066&lt;/del&gt;&lt;/a&gt; refactor Convert Replica Set to Replicated Shard Cluster (#479)&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;refactor Convert Replica Set to Replicated Shard Cluster&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;removes Downtime sub-heading&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;review feedback&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;fixes typo&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;let users know they may need to restart apps connected to secondaries&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;updates primary warning&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;clarifies primary warning and moves to the primary stepdown section&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/docs-mongodb-internal/commit/2c7fc37c2a1b159f3212357ffa28169612002545&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/docs-mongodb-internal/commit/2c7fc37c2a1b159f3212357ffa28169612002545&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="1890101">SERVER-60466</issuekey>
        </issuelink>
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