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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-44054] support the equivalent of &quot;select for update&quot;</title>
                <link>https://jira.mongodb.org/browse/SERVER-44054</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The approach suggested &lt;a href=&quot;https://www.mongodb.com/blog/post/how-to-select--for-update-inside-mongodb-transactions&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; forces the server to do extra work by committing and replicating changes to objects that are otherwise only being read.&lt;/p&gt;</description>
                <environment></environment>
        <key id="971613">SERVER-44054</key>
            <summary>support the equivalent of &quot;select for update&quot;</summary>
                <type id="2" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14711&amp;avatarType=issuetype">New Feature</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="mdcallag">Mark Callaghan</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Wed, 16 Oct 2019 22:51:06 +0000</created>
                <updated>Tue, 6 Dec 2022 02:44:40 +0000</updated>
                                                                                                <votes>0</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="2497514" author="mdcallag" created="Wed, 23 Oct 2019 14:52:13 +0000"  >&lt;p&gt;The case I am concerned about is &quot;select for update&quot; from document A, then modify document B where modifying doc A to get a lock on it is extra work.&#160;&lt;/p&gt;

&lt;p&gt;When the user does &quot;select for update&quot; from doc A, then modifies doc A there isn&apos;t extra work using the approach suggested by the blog.&lt;/p&gt;</comment>
                            <comment id="2493366" author="carl.champain" created="Mon, 21 Oct 2019 19:56:03 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mdcallag&quot; class=&quot;user-hover&quot; rel=&quot;mdcallag&quot;&gt;mdcallag&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for taking the time to submit this request.&lt;br/&gt;
We&apos;re assigning this ticket to the Query team to be evaluated against our currently planned work. Updates will be posted on this ticket as they happen.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Carl&lt;/p&gt;</comment>
                            <comment id="2487025" author="mdcallag" created="Thu, 17 Oct 2019 15:56:14 +0000"  >&lt;p&gt;Modifying the selected document to prevent it from being modified by others increases the chance for write conflict errors. Since this would be done in a conversational transaction (start, modify &quot;read&quot; doc, modify other doc, commit) then the retry can&apos;t be hidden and the app developer must catch/retry. So the benefit for this feature request is performance, efficiency and making life easier for a developer.&lt;/p&gt;

&lt;p&gt;I asked about this [on mongo-user|&lt;a href=&quot;https://groups.google.com/forum/#!topic/mongodb-user/IsqqJwaH9sk&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://groups.google.com/forum/#!topic/mongodb-user/IsqqJwaH9sk&lt;/a&gt;&lt;/p&gt;

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</comment>
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