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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-72142] Define catalog shard changelog behaviour</title>
                <link>https://jira.mongodb.org/browse/SERVER-72142</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Lines&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/d4082c855140f25957d9ad9be6b8056413be9d3e/src/mongo/db/commands/run_aggregate.cpp#L777&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/d4082c855140f25957d9ad9be6b8056413be9d3e/src/mongo/db/commands/run_aggregate.cpp#L777&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/d4082c855140f25957d9ad9be6b8056413be9d3e/src/mongo/db/repl/replication_coordinator_impl.cpp#L355&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/d4082c855140f25957d9ad9be6b8056413be9d3e/src/mongo/db/repl/replication_coordinator_impl.cpp#L355&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2212012">SERVER-72142</key>
            <summary>Define catalog shard changelog behaviour</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="9">Done</resolution>
                                        <assignee username="jack.mulrow@mongodb.com">Jack Mulrow</assignee>
                                    <reporter username="kshitij.gupta@mongodb.com">Kshitij Gupta</reporter>
                        <labels>
                    </labels>
                <created>Thu, 15 Dec 2022 15:23:01 +0000</created>
                <updated>Fri, 3 Mar 2023 02:37:19 +0000</updated>
                            <resolved>Fri, 3 Mar 2023 02:36:29 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5245737" author="jack.mulrow" created="Fri, 3 Mar 2023 02:36:29 +0000"  >&lt;p&gt;From talking with &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=didier.nadeau%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;didier.nadeau@mongodb.com&quot;&gt;didier.nadeau@mongodb.com&lt;/a&gt; and &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=milkie%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;milkie@mongodb.com&quot;&gt;milkie@mongodb.com&lt;/a&gt; on slack, we don&apos;t expect to use a colocated config server in serverless anytime soon, so it&apos;s fine to keep serverless change streams disallowed on the config server for now and we can revisit in the future. So since no code changes are required for this ticket, I&apos;m closing it as &quot;done.&quot;&lt;/p&gt;</comment>
                            <comment id="5241855" author="jack.mulrow" created="Wed, 1 Mar 2023 21:16:17 +0000"  >&lt;p&gt;The second check is for the periodic noop writer&apos;s interval. It uses a shorter interval so there&apos;s frequent enough activity to avoid stalling change streams waiting for oplog entries. It&apos;s probably not necessary for a shard that has user data since it&apos;ll see more frequent writes, but I don&apos;t see a harm in having it enabled. And the catalog shard is still the one config server, so if it is idle, we&apos;d still want the more frequent noops.&lt;/p&gt;

&lt;p&gt;As for the first check, that seems like an assertion for a kind of change streams that only exist in a serverless environment. I&apos;m not sure we even use sharding in serverless yet, but I&apos;m guessing we&apos;ll want to lift that restriction so eventually we can use catalog shards in serverless with change streams. I&apos;ll follow up with the serverless team.&lt;/p&gt;</comment>
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            <issuekey id="2245644">SERVER-73409</issuekey>
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