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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-48920] Use document deltas to determine whether update affects indexes while applying diff</title>
                <link>https://jira.mongodb.org/browse/SERVER-48920</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When applying replacement and pipeline updates, we conservatively assume that all indexes associated with the document need to be updated. Once document diffing is in place for pipeline based updates we can use the diff to determine which fields changed and whether indexes need to be updated.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/59235bae1cbfa1ebdd2b2a12857e4f160a9afe70/src/mongo/db/update/update_driver.cpp#L256-L258&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this&lt;/a&gt; code and &lt;a href=&quot;https://github.com/mongodb/mongo/blob/59235bae1cbfa1ebdd2b2a12857e4f160a9afe70/src/mongo/db/update/update_driver.cpp#L269-L271&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;this&lt;/a&gt; code.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1382765">SERVER-48920</key>
            <summary>Use document deltas to determine whether update affects indexes while applying diff</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="arun.banala@mongodb.com">Arun Banala</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Wed, 17 Jun 2020 16:23:37 +0000</created>
                <updated>Sun, 29 Oct 2023 22:06:52 +0000</updated>
                            <resolved>Fri, 14 Aug 2020 13:11:02 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
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                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="3336164" author="xgen-internal-githook" created="Thu, 13 Aug 2020 12:58:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Arun Banala&apos;, &apos;email&apos;: &apos;arun.banala@mongodb.com&apos;, &apos;username&apos;: &apos;banarun&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-48920&quot; title=&quot;Use document deltas to determine whether update affects indexes while applying diff&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-48920&quot;&gt;&lt;del&gt;SERVER-48920&lt;/del&gt;&lt;/a&gt; Use document deltas to determine whether update affects indexes&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a41abb64d17f09f7c6ad48bc39730d3fc25fc2ed&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a41abb64d17f09f7c6ad48bc39730d3fc25fc2ed&lt;/a&gt;&lt;/p&gt;</comment>
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