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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>[MONGOCRYPT-447] Raise default contention factor to 4</title>
                <link>https://jira.mongodb.org/browse/MONGOCRYPT-447</link>
                <project id="17481" key="MONGOCRYPT">Libmongocrypt</project>
                    <description>&lt;p&gt;&lt;b&gt;Scope&lt;/b&gt;&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Raise&#160;the default contention factor value to 4 for explicit encryption.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;b&gt;Background&lt;/b&gt;&lt;br/&gt;
The default contention factor value was raised to 4 on the server in &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-66663&quot; title=&quot;Raise default contention factor for FLE 2&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-66663&quot;&gt;&lt;del&gt;SERVER-66663&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Automatic encryption should not require changes. Query analysis will include the contention factor to use in the FLE2EncryptionPlaceholder.&lt;/p&gt;

&lt;p&gt;Explicit encryption will need to be updated. Querying with an incorrect contention factor may return incorrect results.&lt;/p&gt;

&lt;p&gt;Contention factor is included in the &lt;a href=&quot;https://github.com/mongodb/libmongocrypt/blob/b5a7a2a723c7a29e5e694e84372e1b843781d3e8/src/mc-fle2-find-equality-payload.c#L139-L141&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;FLE2FindEqualityPayload&lt;/a&gt; and used to create the &lt;a href=&quot;https://github.com/mongodb/libmongocrypt/blob/b5a7a2a723c7a29e5e694e84372e1b843781d3e8/src/mongocrypt-marking.c#L461-L470&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;FLE2InsertUpdatePayload&lt;/a&gt;.&lt;/p&gt;

</description>
                <environment></environment>
        <key id="2074301">MONGOCRYPT-447</key>
            <summary>Raise default contention factor to 4</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="kevin.albertson@mongodb.com">Kevin Albertson</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 22 Jun 2022 16:00:51 +0000</created>
                <updated>Sat, 28 Oct 2023 10:25:46 +0000</updated>
                            <resolved>Mon, 27 Jun 2022 20:03:06 +0000</resolved>
                                                    <fixVersion>1.5.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4643118" author="xgen-internal-githook" created="Mon, 27 Jun 2022 20:02:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kevin Albertson&apos;, &apos;email&apos;: &apos;kevin.albertson@mongodb.com&apos;, &apos;username&apos;: &apos;kevinAlbs&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/MONGOCRYPT-447&quot; title=&quot;Raise default contention factor to 4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MONGOCRYPT-447&quot;&gt;&lt;del&gt;MONGOCRYPT-447&lt;/del&gt;&lt;/a&gt; require contention factor for indexed algorithm (#381)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/libmongocrypt/commit/b1d9dd9811d8c15dc294ab3d5dcb71364833f28d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/libmongocrypt/commit/b1d9dd9811d8c15dc294ab3d5dcb71364833f28d&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4642214" author="xgen-internal-githook" created="Mon, 27 Jun 2022 15:47:56 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kevin Albertson&apos;, &apos;email&apos;: &apos;kevin.albertson@mongodb.com&apos;, &apos;username&apos;: &apos;kevinAlbs&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/MONGOCRYPT-447&quot; title=&quot;Raise default contention factor to 4&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MONGOCRYPT-447&quot;&gt;&lt;del&gt;MONGOCRYPT-447&lt;/del&gt;&lt;/a&gt; set default contention factor to 4 (#378)&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/libmongocrypt/commit/a6b33ea1434d13ec60772be9f8866763e6596fbd&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/libmongocrypt/commit/a6b33ea1434d13ec60772be9f8866763e6596fbd&lt;/a&gt;&lt;/p&gt;</comment>
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                                                                <inwardlinks description="is depended on by">
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            <issuekey id="2076892">DRIVERS-2371</issuekey>
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                                                                <inwardlinks description="is related to">
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            <issuekey id="2052765">SERVER-66663</issuekey>
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