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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-48028] Audit which commands allow snapshot reads outside transactions</title>
                <link>https://jira.mongodb.org/browse/SERVER-48028</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Review all commands on mongod and mongos. Only find, aggregate, and distinct (on non-sharded collections) should permit readConcern level snapshot outside multi-document transactions.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1343870">SERVER-48028</key>
            <summary>Audit which commands allow snapshot reads outside transactions</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="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Thu, 7 May 2020 22:38:34 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:32 +0000</updated>
                            <resolved>Wed, 13 May 2020 17:17:06 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Replication</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3084120" author="lingzhi.deng" created="Wed, 13 May 2020 17:21:41 +0000"  >&lt;p&gt;This &lt;a href=&quot;https://github.com/mongodb/mongo/blob/ce22715f281d28112305d58739f8c86f69d9b646/jstests/noPassthrough/readConcern_snapshot.js#L134-L187&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;test&lt;/a&gt; is a good example of what commands are allowed in snapshot reads outside of transactions (plus &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47996&quot; title=&quot;Ban snapshot &amp;quot;distinct&amp;quot; outside transactions on sharded collections&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47996&quot;&gt;&lt;del&gt;SERVER-47996&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;

&lt;p&gt;So to sum up - commands allowed in non-transaction snapshot reads are:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;find&lt;/li&gt;
	&lt;li&gt;aggregate&lt;/li&gt;
	&lt;li&gt;distinct (on non-sharded collections)&lt;/li&gt;
&lt;/ul&gt;
</comment>
                            <comment id="3084090" author="xgen-internal-githook" created="Wed, 13 May 2020 17:13:40 +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-48028&quot; title=&quot;Audit which commands allow snapshot reads outside transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48028&quot;&gt;&lt;del&gt;SERVER-48028&lt;/del&gt;&lt;/a&gt;: Ban commands not allowed in snapshot outside of transactions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ce22715f281d28112305d58739f8c86f69d9b646&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ce22715f281d28112305d58739f8c86f69d9b646&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3084084" author="xgen-internal-githook" created="Wed, 13 May 2020 17:13:17 +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-48028&quot; title=&quot;Audit which commands allow snapshot reads outside transactions&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48028&quot;&gt;&lt;del&gt;SERVER-48028&lt;/del&gt;&lt;/a&gt;: Ban commands not allowed in snapshot outside of transactions&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ce22715f281d28112305d58739f8c86f69d9b646&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ce22715f281d28112305d58739f8c86f69d9b646&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="1333400">SERVER-47847</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="1334382">SERVER-47850</issuekey>
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