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    <title>MongoDB Jira</title>
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    <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>[DRIVERS-1937] Support explicit sessions in CSFLE auto encryption internal commands</title>
                <link>https://jira.mongodb.org/browse/DRIVERS-1937</link>
                <project id="10980" key="DRIVERS">Drivers</project>
                    <description>&lt;div class=&quot;panel&quot; style=&quot;background-color: #fafbfc;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #fafbfc;&quot;&gt;
&lt;h3&gt;&lt;a name=&quot;Summary&quot;&gt;&lt;/a&gt;&lt;b&gt;Summary&lt;/b&gt;&lt;/h3&gt;

&lt;p&gt;During automatic encryption and decryption, CSFLE may execute two internal commands:&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;tt&gt;find&lt;/tt&gt; to retrieve key documents from the &lt;a href=&quot;https://github.com/mongodb/specifications/blob/5f8f6689538a39a36186285e747d3ac2fbcb27d1/source/client-side-encryption/client-side-encryption.rst#mongodb-key-vault-collection&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Key Vault Collection&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;listCollections&lt;/tt&gt; to retrieve JSON schemas on collections not present in the client configured &lt;tt&gt;schemaMap&lt;/tt&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;It is not possible to use an explicit session on these operations with the current API.&lt;/p&gt;

&lt;h3&gt;&lt;a name=&quot;Motivation&quot;&gt;&lt;/a&gt;&lt;b&gt;Motivation&lt;/b&gt;&lt;/h3&gt;

&lt;p&gt;I see one plausible use case:&lt;/p&gt;

&lt;p&gt;To guarantee a new data key created with &lt;tt&gt;ClientEncryption.createDataKey&lt;/tt&gt; is visible in later automatic encryption operations, a causally consistent session could be used for &lt;a href=&quot;https://docs.mongodb.com/manual/core/causal-consistency-read-write-concerns/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;read-your-own-writes&lt;/a&gt; semantics. Automatic encryption already uses read concern majority on the &lt;tt&gt;find&lt;/tt&gt; operation.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Whoistheaffectedenduser%3F&quot;&gt;&lt;/a&gt;Who is the affected end user?&lt;/h4&gt;
&lt;p&gt;Any user of CSFLE.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Howdoesthisaffecttheenduser%3F&quot;&gt;&lt;/a&gt;How does this affect the end user?&lt;/h4&gt;

&lt;p&gt;This was not requested by a user. Users cannot use explicit sessions in automatic encryption or automatic decryption.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Howlikelyisitthatthisproblemorusecasewilloccur%3F&quot;&gt;&lt;/a&gt;How likely is it that this problem or use case will occur?&lt;/h4&gt;

&lt;p&gt;I am not sure. &lt;tt&gt;createDataKey&lt;/tt&gt; already uses majority write concern, and &lt;tt&gt;find&lt;/tt&gt; in automatic encryption uses majority read concern. I think a problem like the use-case described above is rare, if at all possible.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Iftheproblemdoesoccur%2Cwhataretheconsequencesandhowseverearethey%3F&quot;&gt;&lt;/a&gt;If the problem does occur, what are the consequences and how severe are they?&lt;/h4&gt;

&lt;p&gt;If the result of &lt;tt&gt;createDataKey&lt;/tt&gt; is not immediately visible, it result in transient errors in automatic encryption / decryption operations unable to retrieve the key.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Isthisissueurgent%3F&quot;&gt;&lt;/a&gt;Is this issue urgent?&lt;/h4&gt;
&lt;p&gt;No.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Isthisticketrequiredbyadownstreamteam%3F&quot;&gt;&lt;/a&gt;Is this ticket required by a downstream team?&lt;/h4&gt;

&lt;p&gt;No.&lt;/p&gt;

&lt;h4&gt;&lt;a name=&quot;Isthisticketonlyfortests%3F&quot;&gt;&lt;/a&gt;Is this ticket only for tests?&lt;/h4&gt;

&lt;p&gt;No.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;</description>
                <environment></environment>
        <key id="1887482">DRIVERS-1937</key>
            <summary>Support explicit sessions in CSFLE auto encryption internal commands</summary>
                <type id="14901" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14700&amp;avatarType=issuetype">Spec Change</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Fri, 1 Oct 2021 00:52:07 +0000</created>
                <updated>Thu, 14 Jul 2022 17:38:59 +0000</updated>
                                                                <component>Client Side Encryption</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                    <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="1867242">GODRIVER-2147</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2090423">DRIVERS-2389</issuekey>
        </issuelink>
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