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    <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-49856] Make DatabaseCache causally consistent through the usage of ComparableDatabaseVersion</title>
                <link>https://jira.mongodb.org/browse/SERVER-49856</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Introduce a new class called say ComparableDatabaseVersion, which allows to compare two database versions that have different epoch. This class will be use &lt;a href=&quot;https://github.com/mongodb/mongo/blob/e1f9d520c85c65b1fcf1d3affb067e4935c04c71/src/mongo/util/read_through_cache.h#L118&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;as clock&lt;/a&gt; for the DatabaseCache (introduced by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48992&quot; title=&quot;Implement database cache on top of ReadThroughCache&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48992&quot;&gt;&lt;del&gt;SERVER-48992&lt;/del&gt;&lt;/a&gt;) to make it causally consistent. In particular it will be use to advance the cached database entry&apos;s time as a result of a reception of &lt;a href=&quot;https://github.com/mongodb/mongo/blob/56f01320adad4935777a2a3fd61fd8f816a26789/src/mongo/s/catalog_cache.cpp#L325-L345&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;StaleDatabaseVersion&lt;/a&gt;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1419884">SERVER-49856</key>
            <summary>Make DatabaseCache causally consistent through the usage of ComparableDatabaseVersion</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="tommaso.tocci@mongodb.com">Tommaso Tocci</assignee>
                                    <reporter username="tommaso.tocci@mongodb.com">Tommaso Tocci</reporter>
                        <labels>
                            <label>PM-1645-Milestone-2</label>
                    </labels>
                <created>Fri, 24 Jul 2020 10:06:29 +0000</created>
                <updated>Sun, 29 Oct 2023 22:05:18 +0000</updated>
                            <resolved>Thu, 6 Aug 2020 19:03:34 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3325245" author="tommaso.tocci" created="Thu, 6 Aug 2020 19:02:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Tommaso Tocci&apos;, &apos;email&apos;: &apos;tommaso.tocci@mongodb.com&apos;, &apos;username&apos;: &apos;toto-dev&apos;}

&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48991&quot; title=&quot;Make CatalogCache causally consistent&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48991&quot;&gt;&lt;del&gt;SERVER-48991&lt;/del&gt;&lt;/a&gt; Make DatabaseCache causally consistent through the usage of ComparableDatabaseVersion&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8714e192a893e9768fd4ab7d734de6a6ead941c1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8714e192a893e9768fd4ab7d734de6a6ead941c1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3325158" author="tommaso.tocci" created="Thu, 6 Aug 2020 18:24:17 +0000"  >&lt;p&gt;&lt;a href=&quot;https://mongodbcr.appspot.com/659920001/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://mongodbcr.appspot.com/659920001/&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1384786">SERVER-48992</issuekey>
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            <issuelink>
            <issuekey id="1395585">SERVER-49189</issuekey>
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            <issuekey id="1503775">SERVER-51390</issuekey>
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