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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-72608] Use minValid instead of minVisible when checking secondary namespaces</title>
                <link>https://jira.mongodb.org/browse/SERVER-72608</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Secondary namespaces should not throw SnapshotUnavailable either. See usages of assertAllNamespacesAreCompatibleForReadTimestamp in the PIT lookup code path.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2226506">SERVER-72608</key>
            <summary>Use minValid instead of minVisible when checking secondary namespaces</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="dianna.hohensee@mongodb.com">Dianna Hohensee</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 6 Jan 2023 20:32:26 +0000</created>
                <updated>Sun, 29 Oct 2023 21:28:34 +0000</updated>
                            <resolved>Thu, 19 Jan 2023 16:15:48 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="5124233" author="xgen-internal-githook" created="Thu, 19 Jan 2023 16:02:26 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Dianna Hohensee&apos;, &apos;email&apos;: &apos;dianna.hohensee@mongodb.com&apos;, &apos;username&apos;: &apos;DiannaHohensee&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-72608&quot; title=&quot;Use minValid instead of minVisible when checking secondary namespaces&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-72608&quot;&gt;&lt;del&gt;SERVER-72608&lt;/del&gt;&lt;/a&gt; AutoGet*PIT instantiates PIT Collection instances for secondary namespaces instead of throwing SnapshotUnavailable&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5c0e8f05e352014567a19a2aa2c54e0bbb235072&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5c0e8f05e352014567a19a2aa2c54e0bbb235072&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5100648" author="dianna.hohensee" created="Mon, 9 Jan 2023 18:58:32 +0000"  >&lt;p&gt;Looks like the code that can throw SnapshotUnavailable is &lt;a href=&quot;https://github.com/mongodb/mongo/blob/971761c5670303bad903da214f20077dcb484e69/src/mongo/db/db_raii.cpp#L99-L125&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, and minValid means &lt;a href=&quot;https://github.com/mongodb/mongo/blob/971761c5670303bad903da214f20077dcb484e69/src/mongo/db/catalog/collection_impl.h#L467&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this &lt;tt&gt;_minValidSnapshot&lt;/tt&gt; &lt;/a&gt;. IIUC.&lt;/p&gt;

&lt;p&gt;I presume we can create &lt;tt&gt;Collection&lt;/tt&gt; instances for reads all the way back in time to a collection&apos;s &lt;tt&gt;minValidSnapshot&lt;/tt&gt; timestamp now, so instead of fetching the &lt;tt&gt;minVisible&lt;/tt&gt;, which reflects the last DDL op, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/971761c5670303bad903da214f20077dcb484e69/src/mongo/db/db_raii.cpp#L112&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, we should fetch the &lt;tt&gt;minValidSnapshot&lt;/tt&gt;.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
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                                            <outwardlinks description="depends on">
                                        <issuelink>
            <issuekey id="2205991">SERVER-71957</issuekey>
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            <issuekey id="2228140">SERVER-72641</issuekey>
        </issuelink>
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