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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-47726] Log delta-style oplog entries from pipeline-based updates</title>
                <link>https://jira.mongodb.org/browse/SERVER-47726</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;This will be the final piece of the puzzle once we have the diffing algorithm and delta-application code done. When introduced, the logic to use delta-style oplog entries will be kept behind a feature flag.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1327154">SERVER-47726</key>
            <summary>Log delta-style oplog entries from pipeline-based updates</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Thu, 23 Apr 2020 18:04:35 +0000</created>
                <updated>Sun, 29 Oct 2023 22:09:08 +0000</updated>
                            <resolved>Fri, 10 Jul 2020 02:29:29 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="3278735" author="xgen-internal-githook" created="Thu, 9 Jul 2020 23:51:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47726&quot; title=&quot;Log delta-style oplog entries from pipeline-based updates&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47726&quot;&gt;&lt;del&gt;SERVER-47726&lt;/del&gt;&lt;/a&gt; Log delta-style oplog entries from pipeline based updates&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ef1b465f2085a3a31e6dac4611fab3c75919b258&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ef1b465f2085a3a31e6dac4611fab3c75919b258&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3278734" author="xgen-internal-githook" created="Thu, 9 Jul 2020 23:51:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47726&quot; title=&quot;Log delta-style oplog entries from pipeline-based updates&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47726&quot;&gt;&lt;del&gt;SERVER-47726&lt;/del&gt;&lt;/a&gt; log v: 2 delta oplog entries from pipeline based updates&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/10gen/mongo-enterprise-modules/commit/08eee4ddfeb6f526286b922afd35c2708999df0d&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/10gen/mongo-enterprise-modules/commit/08eee4ddfeb6f526286b922afd35c2708999df0d&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1995938">KAFKA-299</issuekey>
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                            <customfieldvalue>This ticket introduces a new format for &amp;quot;update&amp;quot; oplog entries. In short, if you own a tool/service that directly queries the oplog and attempts to parse the &amp;#39;o&amp;#39; field of &amp;quot;update&amp;quot; entries, this change will affect you when 4.6 comes out. In general we discourage reading the oplog directly and suggest using change streams instead.&lt;br/&gt;
&lt;br/&gt;
If you work on such a service and we have not already discussed this on the design document please email me/message me.</customfieldvalue>

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