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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-30246] $changeNotification cursor hangs when sent to mongos</title>
                <link>https://jira.mongodb.org/browse/SERVER-30246</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In order to work correctly, the merging logic on mongos needs to know that a cursor is tailable. An aggregation with a $changeNotification is tailable, but doesn&apos;t communicate that information, so the merging logic mistakenly hangs, repeatedly asking for the next document, since the cursor id is never set to 0.&lt;/p&gt;</description>
                <environment></environment>
        <key id="406592">SERVER-30246</key>
            <summary>$changeNotification cursor hangs when sent to mongos</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="charlie.swanson@mongodb.com">Charlie Swanson</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Thu, 20 Jul 2017 20:29:05 +0000</created>
                <updated>Mon, 30 Oct 2023 23:15:04 +0000</updated>
                            <resolved>Wed, 26 Jul 2017 22:05:44 +0000</resolved>
                                                    <fixVersion>3.5.11</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1632870" author="xgen-internal-githook" created="Wed, 26 Jul 2017 22:05:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;charlie.swanson@mongodb.com&apos;, &apos;username&apos;: &apos;cswanson310&apos;, &apos;name&apos;: &apos;Charlie Swanson&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-30246&quot; title=&quot;$changeNotification cursor hangs when sent to mongos&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-30246&quot;&gt;&lt;del&gt;SERVER-30246&lt;/del&gt;&lt;/a&gt; Error if $changeNotification is sent to mongos.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/7d9038a90fffa22b58323df1a5221aa9b30f853c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/7d9038a90fffa22b58323df1a5221aa9b30f853c&lt;/a&gt;&lt;/p&gt;</comment>
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