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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-7984] Infrastructure for config database upgrade (adding epochs in v4)</title>
                <link>https://jira.mongodb.org/browse/SERVER-7984</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order to support &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-939&quot; title=&quot;Ability to distribute collections in a single db&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-939&quot;&gt;SERVER-939&lt;/a&gt;&apos;s distribution/moving of unsharded collections, we need to add epochs to all collections and chunks in the config server without them.  &lt;/p&gt;

&lt;p&gt;v2.2 mongos and mongod processes are capable of handling epochs, and will preserve them, but collections which existed in 2.0 clusters may not.&lt;/p&gt;</description>
                <environment></environment>
        <key id="59935">SERVER-7984</key>
            <summary>Infrastructure for config database upgrade (adding epochs in v4)</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="greg.mckeon@mongodb.com">Gregory McKeon</assignee>
                                    <reporter username="greg_10gen">Greg Studer</reporter>
                        <labels>
                    </labels>
                <created>Wed, 19 Dec 2012 19:58:40 +0000</created>
                <updated>Thu, 17 Oct 2019 20:22:06 +0000</updated>
                            <resolved>Tue, 8 Jan 2013 14:47:20 +0000</resolved>
                                                    <fixVersion>2.3.2</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="231385" author="auto" created="Fri, 4 Jan 2013 23:43:33 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2013-01-04T23:36:57Z&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; config upgrade timeout for legacy mongos is incorrect&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ea17746c8bada229b5b5dff7e2a5e7dce3c4ab59&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ea17746c8bada229b5b5dff7e2a5e7dce3c4ab59&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="230338" author="greg_10gen" created="Thu, 3 Jan 2013 21:37:49 +0000"  >&lt;p&gt;Issue is that the multiVersion tests are using outdated version numbers.&lt;/p&gt;

&lt;p&gt;review here:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;http://codereview.10gen.com/9119030/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://codereview.10gen.com/9119030/&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="225553" author="auto" created="Thu, 27 Dec 2012 20:03:55 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-27T19:59:19Z&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; minor nits for config upgrade&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5b24436ec22e8925d921a5f070e5c46132915f6c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5b24436ec22e8925d921a5f070e5c46132915f6c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="225334" author="auto" created="Thu, 27 Dec 2012 15:17:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-27T15:10:06Z&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; fix accidentally ignored error message&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0963605989b76bb98fcca08fd73774f818efb5cb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0963605989b76bb98fcca08fd73774f818efb5cb&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="222276" author="auto" created="Sat, 22 Dec 2012 17:21:47 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-22T17:20:52Z&apos;, u&apos;name&apos;: u&apos;Tad Marshall&apos;, u&apos;email&apos;: u&apos;tad@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; Fix unreferenced local variable warning&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f05814c2f7892f8b699dbdbc22741a53103ab1d1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f05814c2f7892f8b699dbdbc22741a53103ab1d1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="222164" author="auto" created="Sat, 22 Dec 2012 13:26:46 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-22T12:31:28Z&apos;, u&apos;name&apos;: u&apos;Tad Marshall&apos;, u&apos;email&apos;: u&apos;tad@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; Fix Windows compile&lt;/p&gt;

&lt;p&gt;Work around apparent MSVC compiler bug by explicitly casting from&lt;br/&gt;
&apos;const char []&apos; to &apos;const char*&apos;.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/50e1fe795f9c5ba121a04cd56458dc949f3503a2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/50e1fe795f9c5ba121a04cd56458dc949f3503a2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="221671" author="auto" created="Fri, 21 Dec 2012 21:09:34 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-19T20:23:57Z&apos;, u&apos;email&apos;: u&apos;greg@10gen.com&apos;, u&apos;name&apos;: u&apos;Greg Studer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7984&quot; title=&quot;Infrastructure for config database upgrade (adding epochs in v4)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7984&quot;&gt;&lt;del&gt;SERVER-7984&lt;/del&gt;&lt;/a&gt; config upgrade from v3 to v4&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/0950dfc242a2a04cf9fe1b680cca718d645939ad&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/0950dfc242a2a04cf9fe1b680cca718d645939ad&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="60442">DOCS-929</issuekey>
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