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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-60181] Applying insert-only doc-diffs should not require insert in StringMap</title>
                <link>https://jira.mongodb.org/browse/SERVER-60181</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When preparing the &lt;tt&gt;docDiff&lt;/tt&gt; for apply we put the insert field in a StringMap: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/92738c5fa0e8169299e5393e88159b8cbb9559ca/src/mongo/db/update/document_diff_applier.cpp#L106&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/92738c5fa0e8169299e5393e88159b8cbb9559ca/src/mongo/db/update/document_diff_applier.cpp#L106&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;However, if it is an insert-only workload this map is not used and we just read from the insert vector: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/92738c5fa0e8169299e5393e88159b8cbb9559ca/src/mongo/db/update/document_diff_applier.cpp#L495-L504&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/92738c5fa0e8169299e5393e88159b8cbb9559ca/src/mongo/db/update/document_diff_applier.cpp#L495-L504&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;This should cut a &lt;tt&gt;StringMap&lt;/tt&gt; insert for every measurement in time-series inserts.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1882012">SERVER-60181</key>
            <summary>Applying insert-only doc-diffs should not require insert in StringMap</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="henrik.edin@mongodb.com">Henrik Edin</reporter>
                        <labels>
                    </labels>
                <created>Thu, 23 Sep 2021 15:54:52 +0000</created>
                <updated>Sun, 29 Oct 2023 21:48:15 +0000</updated>
                            <resolved>Tue, 12 Oct 2021 19:24:03 +0000</resolved>
                                                    <fixVersion>5.2.0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4113987" author="xgen-internal-githook" created="Fri, 8 Oct 2021 20:36:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Henrik Edin&apos;, &apos;email&apos;: &apos;henrik.edin@mongodb.com&apos;, &apos;username&apos;: &apos;henrikedin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-60181&quot; title=&quot;Applying insert-only doc-diffs should not require insert in StringMap&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-60181&quot;&gt;&lt;del&gt;SERVER-60181&lt;/del&gt;&lt;/a&gt; Avoid pushing insert-only diffs to StringMap when applying docDiff&lt;/p&gt;

&lt;p&gt;Also fix usage of reserveBytes when applying docDiff. Reserved bytes need to be claimed.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/67bc82b140451138e4bf10682ad92289980c2add&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/67bc82b140451138e4bf10682ad92289980c2add&lt;/a&gt;&lt;/p&gt;</comment>
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