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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>[SERVER-25623] addShard should fail if shard&apos;s binary version &lt; the cluster&apos;s featureCompatibilityVersion</title>
                <link>https://jira.mongodb.org/browse/SERVER-25623</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In general the upgrade order for a sharded cluster is config servers first, then shards, then mongoses.  Thus it is illegal for a mongos from the current version to ever talk to a mongod from the previous version.  To enforce this, we need to prevent new mongoses from processing an addShard request that will result in an old mongod being added to the cluster.  For the 3.2-&amp;gt;3.4 upgrade we handled this in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25514&quot; title=&quot;prevent 3.4 config from adding a 3.2 shard during _configsvrAddShard&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25514&quot;&gt;&lt;del&gt;SERVER-25514&lt;/del&gt;&lt;/a&gt;, but that approach won&apos;t work for the 3.4-&amp;gt;3.6 upgrade.&lt;/p&gt;</description>
                <environment></environment>
        <key id="309117">SERVER-25623</key>
            <summary>addShard should fail if shard&apos;s binary version &lt; the cluster&apos;s featureCompatibilityVersion</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="esha.maharishi@mongodb.com">Esha Maharishi</assignee>
                                    <reporter username="spencer@mongodb.com">Spencer Brody</reporter>
                        <labels>
                    </labels>
                <created>Mon, 15 Aug 2016 21:27:32 +0000</created>
                <updated>Thu, 12 Oct 2017 20:49:39 +0000</updated>
                            <resolved>Mon, 2 Oct 2017 21:18:17 +0000</resolved>
                                                    <fixVersion>3.6.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1687421" author="xgen-internal-githook" created="Tue, 3 Oct 2017 04:09:21 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;esha.maharishi@mongodb.com&apos;, &apos;name&apos;: &apos;Esha Maharishi&apos;, &apos;username&apos;: &apos;EshaMaharishi&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25623&quot; title=&quot;addShard should fail if shard&amp;#39;s binary version &amp;lt; the cluster&amp;#39;s featureCompatibilityVersion&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25623&quot;&gt;&lt;del&gt;SERVER-25623&lt;/del&gt;&lt;/a&gt; fix config_server_catalog_test unit test&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f50acb128dc0485b48d8045587579ba48ae888b4&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f50acb128dc0485b48d8045587579ba48ae888b4&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1687103" author="xgen-internal-githook" created="Mon, 2 Oct 2017 21:17:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;esha.maharishi@mongodb.com&apos;, &apos;name&apos;: &apos;Esha Maharishi&apos;, &apos;username&apos;: &apos;EshaMaharishi&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25623&quot; title=&quot;addShard should fail if shard&amp;#39;s binary version &amp;lt; the cluster&amp;#39;s featureCompatibilityVersion&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25623&quot;&gt;&lt;del&gt;SERVER-25623&lt;/del&gt;&lt;/a&gt; addShard should fail if shard&apos;s binary version &amp;lt; the cluster&apos;s featureCompatibilityVersion&lt;/p&gt;

&lt;p&gt;move add_invalid_shard.js to jstests/multiVersion since it starts a &apos;last-stable&apos; mongod&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a7efca41eb8b864f38239a77e2816b24c48fa899&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a7efca41eb8b864f38239a77e2816b24c48fa899&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1687041" author="xgen-internal-githook" created="Mon, 2 Oct 2017 20:45:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;ian.whalen@gmail.com&apos;, &apos;name&apos;: &apos;Ian Whalen&apos;, &apos;username&apos;: &apos;IanWhalen&apos;}
&lt;p&gt;Message: Revert &quot;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25623&quot; title=&quot;addShard should fail if shard&amp;#39;s binary version &amp;lt; the cluster&amp;#39;s featureCompatibilityVersion&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25623&quot;&gt;&lt;del&gt;SERVER-25623&lt;/del&gt;&lt;/a&gt; addShard should fail if shard&apos;s binary version &amp;lt; the cluster&apos;s featureCompatibilityVersion&quot;&lt;/p&gt;

&lt;p&gt;This reverts commit 80b4173ab3ad46eed8f4f482e5fe34bf6546d2e6.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/837b59353962320c8adf5497ac5106e6f4353183&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/837b59353962320c8adf5497ac5106e6f4353183&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1686829" author="xgen-internal-githook" created="Mon, 2 Oct 2017 18:10:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;esha.maharishi@mongodb.com&apos;, &apos;name&apos;: &apos;Esha Maharishi&apos;, &apos;username&apos;: &apos;EshaMaharishi&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25623&quot; title=&quot;addShard should fail if shard&amp;#39;s binary version &amp;lt; the cluster&amp;#39;s featureCompatibilityVersion&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25623&quot;&gt;&lt;del&gt;SERVER-25623&lt;/del&gt;&lt;/a&gt; addShard should fail if shard&apos;s binary version &amp;lt; the cluster&apos;s featureCompatibilityVersion&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/80b4173ab3ad46eed8f4f482e5fe34bf6546d2e6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/80b4173ab3ad46eed8f4f482e5fe34bf6546d2e6&lt;/a&gt;&lt;/p&gt;</comment>
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