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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>[DOCS-4664] Document user-facing changes related to WT index format change</title>
                <link>https://jira.mongodb.org/browse/DOCS-4664</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;WT Index format change BSON&amp;gt;KeyIndex implies, from Mathias:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;@Docs: Two things that need mention: upgrading WT data from older RCs will require --repair. Also, when doing a covered index query, if the result is a double with the value NaN, we no longer guarantee which NaN you get back.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;Former, in compatibility notes should have limited impact.&lt;br/&gt;
Latter, at &lt;a href=&quot;http://docs.mongodb.org/manual/core/query-optimization/#limitations&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://docs.mongodb.org/manual/core/query-optimization/#limitations&lt;/a&gt; and probably also in compatibility notes and in WT &apos;blurbs&apos;&lt;/p&gt;</description>
                <environment></environment>
        <key id="178668">DOCS-4664</key>
            <summary>Document user-facing changes related to WT index format change</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="9">Done</resolution>
                                        <assignee username="sam.kleinman">Sam Kleinman</assignee>
                                    <reporter username="michael.paik">Michael Paik</reporter>
                        <labels>
                    </labels>
                <created>Wed, 14 Jan 2015 15:57:33 +0000</created>
                <updated>Mon, 16 Mar 2015 23:51:32 +0000</updated>
                            <resolved>Wed, 14 Jan 2015 18:04:48 +0000</resolved>
                                                    <fixVersion>v1.3.17</fixVersion>
                    <fixVersion>mongodb-3.0</fixVersion>
                                    <component>manual</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="804477" author="xgen-internal-githook" created="Wed, 14 Jan 2015 18:04:43 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4664&quot; title=&quot;Document user-facing changes related to WT index format change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4664&quot;&gt;&lt;del&gt;DOCS-4664&lt;/del&gt;&lt;/a&gt;: covered query limitation for number types on WT&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/aacf1d771d78703dac1a431a3686b856583deb5f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/aacf1d771d78703dac1a431a3686b856583deb5f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="804375" author="xgen-internal-githook" created="Wed, 14 Jan 2015 16:41:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;tychoish&apos;, u&apos;name&apos;: u&apos;Sam Kleinman&apos;, u&apos;email&apos;: u&apos;samk@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/DOCS-4664&quot; title=&quot;Document user-facing changes related to WT index format change&quot; class=&quot;issue-link&quot; data-issue-key=&quot;DOCS-4664&quot;&gt;&lt;del&gt;DOCS-4664&lt;/del&gt;&lt;/a&gt;: note about index format change&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/docs/commit/81b96af88bc8785a98e7ec3db83d8662a97a4f89&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/docs/commit/81b96af88bc8785a98e7ec3db83d8662a97a4f89&lt;/a&gt;&lt;/p&gt;</comment>
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