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    <title>MongoDB Jira</title>
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    <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-67170] Avoid inspecting oplog BSON object for every insert request to change collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-67170</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The change collection code currently parses the BSON object to make various &lt;a href=&quot;https://github.com/mongodb/mongo/blob/62dae95dc6c02786dce1c6c97bae488ac95b9601/src/mongo/db/change_stream_change_collection_manager.cpp#L142&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;decisions&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;In the serverless, if the change collection mode is enabled, then every oplog entry will be inspected by the change collection. Examining every BSONified oplog entry might be expensive and could reduce the write performance. This ticket is about refactoring the change collection so we make such a decision by inspecting the &lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/repl/oplog_entry.idl&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;oplogEntry&lt;/a&gt; IDL spec rather. It should be noted that at the time of filing this ticket, the change collection was in the development phase and no performance implications were known. This ticket is desirable but not mandatory. The priority of this ticket is also very low.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2065895">SERVER-67170</key>
            <summary>Avoid inspecting oplog BSON object for every insert request to change 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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="rishab.joshi@mongodb.com">Rishab Joshi</reporter>
                        <labels>
                            <label>tech-debt</label>
                    </labels>
                <created>Fri, 10 Jun 2022 13:14:56 +0000</created>
                <updated>Tue, 6 Dec 2022 00:02:53 +0000</updated>
                            <resolved>Thu, 13 Oct 2022 17:54:39 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="4901668" author="xgen-internal-githook" created="Thu, 13 Oct 2022 17:42:43 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Rishab Joshi&apos;, &apos;email&apos;: &apos;rishab.joshi@mongodb.com&apos;, &apos;username&apos;: &apos;rishvin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67170&quot; title=&quot;Avoid inspecting oplog BSON object for every insert request to change collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67170&quot;&gt;&lt;del&gt;SERVER-67170&lt;/del&gt;&lt;/a&gt; Remove TODO associated with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-67170&quot; title=&quot;Avoid inspecting oplog BSON object for every insert request to change collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-67170&quot;&gt;&lt;del&gt;SERVER-67170&lt;/del&gt;&lt;/a&gt;.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/61c9b12e9ae2feccbdf2fa80ac91bfb13ccfeeae&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/61c9b12e9ae2feccbdf2fa80ac91bfb13ccfeeae&lt;/a&gt;&lt;/p&gt;</comment>
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