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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-55578] Disallow atClusterTime reads on the config.transactions collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-55578</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The changes from &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55305&quot; title=&quot;Retryable write may execute more than once if primary had transitioned through rollback to stable&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55305&quot;&gt;&lt;del&gt;SERVER-55305&lt;/del&gt;&lt;/a&gt; will address how a retryable write statement may execute multiple times without making atClusterTime reads on the config.transactions collection correct for all readTimestamps. To prevent accidental misuse of atClusterTime reads, they should be rejected on the config.transactions collection.&lt;/p&gt;

&lt;p&gt;Note however that resharding depends on performing an atClusterTime read on the config.transactions collection (see &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55214?focusedCommentId=3687386&amp;amp;page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-3687386&quot; class=&quot;external-link&quot; rel=&quot;nofollow&quot;&gt;SERVER-55214&lt;/a&gt;) and will need an undocumented option (or some internal privilege way) of continuing to use atClusterTime reads on the config.transactions collection.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1660948">SERVER-55578</key>
            <summary>Disallow atClusterTime reads on the config.transactions collection</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="lingzhi.deng@mongodb.com">Lingzhi Deng</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                    </labels>
                <created>Fri, 26 Mar 2021 23:57:30 +0000</created>
                <updated>Sun, 29 Oct 2023 21:55:41 +0000</updated>
                            <resolved>Mon, 10 May 2021 00:21:59 +0000</resolved>
                                                    <fixVersion>5.0.0-rc0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="3762253" author="xgen-internal-githook" created="Fri, 7 May 2021 22:30:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Lingzhi Deng&apos;, &apos;email&apos;: &apos;lingzhi.deng@mongodb.com&apos;, &apos;username&apos;: &apos;ldennis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-55578&quot; title=&quot;Disallow atClusterTime reads on the config.transactions collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-55578&quot;&gt;&lt;del&gt;SERVER-55578&lt;/del&gt;&lt;/a&gt;: Disallow atClusterTime reads and afterClusterTime majority reads on config.transactions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1690976bdb4bab7d03641391d72391394d23085c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1690976bdb4bab7d03641391d72391394d23085c&lt;/a&gt;&lt;/p&gt;</comment>
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                            <issuelinktype id="10320">
                    <name>Documented</name>
                                                                <inwardlinks description="is documented by">
                                        <issuelink>
            <issuekey id="1708022">DOCS-14433</issuekey>
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            <issuekey id="1649421">SERVER-55214</issuekey>
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            <issuelink>
            <issuekey id="1652773">SERVER-55305</issuekey>
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            <issuelink>
            <issuekey id="1700958">SERVER-56631</issuekey>
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            <issuelink>
            <issuekey id="1708611">SERVER-56796</issuekey>
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                            <customfieldvalue>Non-transaction reads on config.transactions collection with readConcern snapshot are disallowed.&lt;br/&gt;
Non-transaction reads on config.transactions collection with readConcern majority and afterClusterTime (e.g. in a causal consistent session) are disallowed.</customfieldvalue>

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