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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-65909] Make oplog and change stream formats of {op: &quot;n&quot;} events consistent</title>
                <link>https://jira.mongodb.org/browse/SERVER-65909</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There are a number of {&lt;tt&gt;op:&quot;n&quot;&lt;/tt&gt;} oplog events that change streams consume, some for internal use and some of which are returned to the client:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;&lt;tt&gt;migrateChunkToNewShard&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;reshardBegin&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;reshardDoneCatchUp&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;shardCollection&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;migrateLastChunkFromShard&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;refineCollectionShardKey&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;&lt;tt&gt;reshardCollection&lt;/tt&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;The newly-added events &lt;tt&gt;shardCollection&lt;/tt&gt;, &lt;tt&gt;migrateLastChunkFromShard&lt;/tt&gt;, &lt;tt&gt;refineCollectionShardKey&lt;/tt&gt; and &lt;tt&gt;reshardCollection&lt;/tt&gt; all record their &lt;tt&gt;o2&lt;/tt&gt; fields similar to how a command records an operation, with the first field of the object being {&lt;tt&gt;opName: &quot;db.collection&quot;&lt;/tt&gt;}. They also generate &lt;tt&gt;operationDescription&lt;/tt&gt; fields and resume tokens consistent with other events.&lt;/p&gt;

&lt;p&gt;The older events &lt;tt&gt;migrateChunkToNewShard&lt;/tt&gt;, &lt;tt&gt;reshardBegin&lt;/tt&gt;, and &lt;tt&gt;reshardDoneCatchUp&lt;/tt&gt;, however, record their oplog entries as {&lt;tt&gt;o2.type: &quot;opName&quot;&lt;/tt&gt;} and their change events record the description of the operation as &lt;tt&gt;documentKey&lt;/tt&gt;, since &lt;tt&gt;operationDescription&lt;/tt&gt; did not exist at the time they were created. We should make all these events consistent with other events both in their oplog and change event formats.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2031588">SERVER-65909</key>
            <summary>Make oplog and change stream formats of {op: &quot;n&quot;} events consistent</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="arun.banala@mongodb.com">Arun Banala</assignee>
                                    <reporter username="bernard.gorman@mongodb.com">Bernard Gorman</reporter>
                        <labels>
                            <label>pm1950-m6</label>
                    </labels>
                <created>Sat, 23 Apr 2022 13:10:53 +0000</created>
                <updated>Sun, 29 Oct 2023 21:39:06 +0000</updated>
                            <resolved>Mon, 23 May 2022 09:47:08 +0000</resolved>
                                                    <fixVersion>6.1.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4565320" author="xgen-internal-githook" created="Mon, 23 May 2022 07:53:09 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Arun Banala&apos;, &apos;email&apos;: &apos;arun.banala@mongodb.com&apos;, &apos;username&apos;: &apos;banarun&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-65909&quot; title=&quot;Make oplog and change stream formats of {op: &amp;quot;n&amp;quot;} events consistent&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-65909&quot;&gt;&lt;del&gt;SERVER-65909&lt;/del&gt;&lt;/a&gt; Make oplog and change stream formats of &lt;/p&gt;
{op: &quot;n&quot;}
&lt;p&gt; events consistent&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9d559b3ad8942ade301b41284dee9e6b8c8f098c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9d559b3ad8942ade301b41284dee9e6b8c8f098c&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="2073411">SERVER-67413</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="2052314">SERVER-66645</issuekey>
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