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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-34302] Add passthrough suite(s) replacing coll.watch() with db.watch([{$match: {&quot;ns.coll&quot;: coll.getName()}}])</title>
                <link>https://jira.mongodb.org/browse/SERVER-34302</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;There are some details to figure out here but I believe this will mostly work and provide good coverage of the new &quot;whole-db&quot; change stream feature.&lt;/p&gt;

&lt;p&gt;A couple known cases:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;Things that might not invalidate a &lt;tt&gt;coll.watch()&lt;/tt&gt; will invalidate a &lt;tt&gt;db.watch([{$match: {&quot;ns.coll&quot;: coll.getName()} }])&lt;/tt&gt;&lt;/li&gt;
	&lt;li&gt;Whole-database change streams are proving more susceptible to &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32088&quot; title=&quot;ChangeStream resumeAfter does not work on sharded collections if not all shards have chunks for the collection &quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32088&quot;&gt;&lt;del&gt;SERVER-32088&lt;/del&gt;&lt;/a&gt; since many unsharded collections will not be present on all shards.&lt;/li&gt;
	&lt;li&gt;The tests are very inconsistent - some use the &lt;tt&gt;.watch()&lt;/tt&gt; helper, others use the &lt;tt&gt;.aggregate()&lt;/tt&gt; helper, some use raw runCommand. Two ideas:
	&lt;ol&gt;
		&lt;li&gt;Override runCommand and parse all aggregates looking for &lt;tt&gt;$changeStream&lt;/tt&gt; stages&lt;/li&gt;
		&lt;li&gt;Override &lt;tt&gt;.watch()&lt;/tt&gt;, update all tests to use &lt;tt&gt;.watch()&lt;/tt&gt;. This lets us &quot;fall-back&quot; to &lt;tt&gt;.aggregate()&lt;/tt&gt; if the override would expose one of the issues outlined above, enabling a finer-tuned cursor-by-cursor blacklist. It is extremely subtle though, so probably not worth doing.&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="521745">SERVER-34302</key>
            <summary>Add passthrough suite(s) replacing coll.watch() with db.watch([{$match: {&quot;ns.coll&quot;: coll.getName()}}])</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="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="charlie.swanson@mongodb.com">Charlie Swanson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 4 Apr 2018 15:34:16 +0000</created>
                <updated>Sun, 29 Oct 2023 22:33:00 +0000</updated>
                            <resolved>Thu, 19 Apr 2018 10:27:50 +0000</resolved>
                                                    <fixVersion>3.7.6</fixVersion>
                                    <component>Aggregation Framework</component>
                    <component>Testing Infrastructure</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1868576" author="xgen-internal-githook" created="Thu, 19 Apr 2018 10:25:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;username&apos;: &apos;gormanb&apos;, &apos;name&apos;: &apos;Bernard Gorman&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-34302&quot; title=&quot;Add passthrough suite(s) replacing coll.watch() with db.watch([{$match: {&amp;quot;ns.coll&amp;quot;: coll.getName()}}])&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-34302&quot;&gt;&lt;del&gt;SERVER-34302&lt;/del&gt;&lt;/a&gt; Add passthrough suite(s) replacing single-collection $changeStream with whole-db streams filtered by namespace&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/4b91a39f6ea87742223585e9da27367d841f8979&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4b91a39f6ea87742223585e9da27367d841f8979&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="528695">SERVER-34499</issuekey>
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