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    <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-57523] Do not persist epochs and timestamps on config.chunks</title>
                <link>https://jira.mongodb.org/browse/SERVER-57523</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The goal of this ticket is to change the &lt;tt&gt;ChunkType::fromConfigBSON&lt;/tt&gt; and &lt;tt&gt;ChunkType::toConfigBSON&lt;/tt&gt; implementations so we don&apos;t read/write epochs if they are not needed.&lt;/p&gt;

&lt;p&gt;We may need to do this ticket together with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57522&quot; title=&quot;setFCV command should remove/add epochs from config.chunks on upgrade/downgrade&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57522&quot;&gt;&lt;del&gt;SERVER-57522&lt;/del&gt;&lt;/a&gt; , otherwise &lt;tt&gt;setFCV&lt;/tt&gt; + DDL tests won&apos;t work.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1772590">SERVER-57523</key>
            <summary>Do not persist epochs and timestamps on config.chunks</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="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</assignee>
                                    <reporter username="sergi.mateo-bellido@mongodb.com">Sergi Mateo Bellido</reporter>
                        <labels>
                            <label>PM-1965-Milestone-1</label>
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                <created>Tue, 8 Jun 2021 10:24:26 +0000</created>
                <updated>Sun, 29 Oct 2023 21:52:29 +0000</updated>
                            <resolved>Tue, 15 Jun 2021 11:50:53 +0000</resolved>
                                                    <fixVersion>5.0.0-rc2</fixVersion>
                    <fixVersion>5.1.0-rc0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4107562" author="JIRAUSER1259052" created="Wed, 6 Oct 2021 18:30:01 +0000"  >&lt;p&gt;Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it&#8217;s been triggered. For more active release information, please keep an eye on #server-release. Thank you!&lt;/p&gt;</comment>
                            <comment id="3878882" author="xgen-internal-githook" created="Tue, 15 Jun 2021 16:14:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57523&quot; title=&quot;Do not persist epochs and timestamps on config.chunks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57523&quot;&gt;&lt;del&gt;SERVER-57523&lt;/del&gt;&lt;/a&gt; Do not persist epochs and timestamps on config.chunks&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Do not persist on config.chunks the epoch and timestamp if we are in&lt;br/&gt;
  5.0 (i.e. the chunk has UUID and doesn&apos;t have NS).&lt;/li&gt;
	&lt;li&gt;Changing the setFCV command.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;cherry-pick from fac5a9d7dd3465746e8e0294e73dec18310ffbe9 + minor test fix&lt;br/&gt;
Branch: v5.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/3e8e96a016711f0ba8d1730ef2d67085f9c86af7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/3e8e96a016711f0ba8d1730ef2d67085f9c86af7&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3877983" author="xgen-internal-githook" created="Tue, 15 Jun 2021 10:32:36 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Sergi Mateo Bellido&apos;, &apos;email&apos;: &apos;sergi.mateo-bellido@mongodb.com&apos;, &apos;username&apos;: &apos;smateo&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57523&quot; title=&quot;Do not persist epochs and timestamps on config.chunks&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57523&quot;&gt;&lt;del&gt;SERVER-57523&lt;/del&gt;&lt;/a&gt; Do not persist epochs and timestamps on config.chunks&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Do not persist on config.chunks the epoch and timestamp if we are in&lt;br/&gt;
  5.0 (i.e. the chunk has UUID and doesn&apos;t have NS).&lt;/li&gt;
	&lt;li&gt;Changing the setFCV command.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/fac5a9d7dd3465746e8e0294e73dec18310ffbe9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/fac5a9d7dd3465746e8e0294e73dec18310ffbe9&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
</comment>
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