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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>
    </build-info>


<item>
            <title>[SERVER-60131] Update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support continuous release</title>
                <link>https://jira.mongodb.org/browse/SERVER-60131</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In the past, users could only upgrade or downgrade the server one major version at a time. With continuous release, users can immediately upgrade from &lt;tt&gt;kLastLTS&lt;/tt&gt; to &lt;tt&gt;kLastContinuous/kLatest&lt;/tt&gt; and vice-versa, skipping releases in-between. We need to update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support this release model.&lt;/p&gt;

&lt;p&gt;For example, say WiredTiger changed its version on each continuous release:&lt;/p&gt;
&lt;div class=&apos;table-wrap&apos;&gt;
&lt;table class=&apos;confluenceTable&apos;&gt;&lt;tbody&gt;
&lt;tr&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;MongoDB&lt;/th&gt;
&lt;th class=&apos;confluenceTh&apos;&gt;WiredTiger&lt;/th&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;5.0 (kLastLTS)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;10.0.0&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;5.1 (kLastContinuous)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;11.0.0&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;5.2 (kLatest)&lt;/td&gt;
&lt;td class=&apos;confluenceTd&apos;&gt;12.0.0&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
&lt;/div&gt;


&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Under today&apos;s implementation, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/700997beea270a71a17880b7260ae67c1a91d00a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L155-L157&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;shouldDowngrade()&lt;/a&gt; only supports downgrading to 5.0 (kLastLTS). We should modify it to also support downgrading from 5.2 (kLatest) to 5.1 (kLastContinuous).&lt;/p&gt;

&lt;p&gt;The same change will need to be done for &lt;a href=&quot;https://github.com/mongodb/mongo/blob/700997beea270a71a17880b7260ae67c1a91d00a/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L190&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;getDowngradeString()&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;For reference, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2598db31541746d191e29f9f7236cb8d9a825774/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp#L628-L642&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;current version table&lt;/a&gt; of MongoDB &amp;lt;-&amp;gt; WiredTiger.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1880050">SERVER-60131</key>
            <summary>Update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support continuous release</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="13201">Fixed</resolution>
                                        <assignee username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</reporter>
                        <labels>
                    </labels>
                <created>Tue, 21 Sep 2021 20:40:24 +0000</created>
                <updated>Sun, 29 Oct 2023 21:48:20 +0000</updated>
                            <resolved>Thu, 11 Nov 2021 22:05:37 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="4184184" author="xgen-internal-githook" created="Thu, 11 Nov 2021 20:52:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60131&quot; title=&quot;Update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support continuous release&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60131&quot;&gt;&lt;del&gt;SERVER-60131&lt;/del&gt;&lt;/a&gt; Update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support continuous release&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/beafbda949e7879396dc87b202a4ba7b48fe1e3d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/beafbda949e7879396dc87b202a4ba7b48fe1e3d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4184183" author="xgen-internal-githook" created="Thu, 11 Nov 2021 20:52:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Gregory Wlodarek&apos;, &apos;email&apos;: &apos;gregory.wlodarek@mongodb.com&apos;, &apos;username&apos;: &apos;GWlodarek&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60131&quot; title=&quot;Update WiredTigerKVEngine::shouldDowngrade()/getDowngradeString() to support continuous release&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60131&quot;&gt;&lt;del&gt;SERVER-60131&lt;/del&gt;&lt;/a&gt; Remove unused repairMode parameter from WiredTigerFileVersion::shouldDowngrade()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/efbb7b5f59b8d9b6e12ab70ba0dcd44ac8ed517f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/efbb7b5f59b8d9b6e12ab70ba0dcd44ac8ed517f&lt;/a&gt;&lt;/p&gt;</comment>
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