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        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-79873] Provide a knob to disable or adjust updates with damages for a collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-79873</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Updates-with-damages uses WiredTiger&apos;s &lt;tt&gt;modify&lt;/tt&gt; operation instead of the usual &lt;tt&gt;update&lt;/tt&gt; operation. Whereas an &lt;tt&gt;update&lt;/tt&gt; is a full new value for a document, the &lt;tt&gt;modify&lt;/tt&gt; is a delta on top of the previous value. Using a &lt;tt&gt;modify&lt;/tt&gt; instead of an update benefits using lesser cache and reduces log amplification. But this comes at the performance cost of reads and writes, as full values need to be computed, which might need coalescing several &lt;tt&gt;modify&lt;/tt&gt; on top of a base &lt;tt&gt;update&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;Currently, there is no way to disable or tune the usage of updates-with-damages, so if a workload generates a lot of &lt;tt&gt;modify&lt;/tt&gt; with a high-performance penalty, we can&apos;t mitigate the situation.&lt;/p&gt;

&lt;p&gt;This ticket can explore providing knob(s) to disable updates-with-damages on a collection or reduce how often &lt;tt&gt;modify&lt;/tt&gt; get generated.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2412863">SERVER-79873</key>
            <summary>Provide a knob to disable or adjust updates with damages for a collection</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="13202">Works as Designed</resolution>
                                        <assignee username="gregory.wlodarek@mongodb.com">Gregory Wlodarek</assignee>
                                    <reporter username="sulabh.mahajan@mongodb.com">Sulabh Mahajan</reporter>
                        <labels>
                    </labels>
                <created>Wed, 9 Aug 2023 10:17:16 +0000</created>
                <updated>Fri, 27 Oct 2023 13:51:30 +0000</updated>
                            <resolved>Wed, 23 Aug 2023 21:43:05 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5654980" author="geert.bosch" created="Wed, 23 Aug 2023 21:43:05 +0000"  >&lt;p&gt;We didn&apos;t actually observe this being an issue, so we don&apos;t want to add the complexity of an extra knob.&lt;/p&gt;</comment>
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            <issuekey id="1808506">WT-7776</issuekey>
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            <issuekey id="2412897">SERVER-79875</issuekey>
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