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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-26037] DocumentSourceCursor should report appropriate error on encountering a view</title>
                <link>https://jira.mongodb.org/browse/SERVER-26037</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It is currently possible for DocumentSourceCursor to encounter a view namespace when acquiring a collection lock on what it expects to be a collection. When this occurs it uasserts with &apos;CommandNotSupportedOnView&apos; which is the correct behavior but not the correct error. We should return a more appropriate error in this scenario which can be reach via the following sequence (and reproducible under an fsm test being written for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-25808&quot; title=&quot;Test concurrent view modification for cycle detection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-25808&quot;&gt;&lt;del&gt;SERVER-25808&lt;/del&gt;&lt;/a&gt;):&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;A find is run against a view&lt;/li&gt;
	&lt;li&gt;DB &amp;amp; collection locks are dropped for conversion of find to agg on the view&lt;/li&gt;
	&lt;li&gt;The view is dropped&lt;/li&gt;
	&lt;li&gt;The aggregation is then executed against the former view namespace  (executing on the non-view path)&lt;/li&gt;
	&lt;li&gt;Aggregation drops the DB &amp;amp; collection locks upon establishing a ClientCursor obj&lt;/li&gt;
	&lt;li&gt;The view is recreated&lt;/li&gt;
	&lt;li&gt;DocumentSourceCursor attempts to establish DB &amp;amp; collection locks with the understanding that the namespace is a collection. It uasserts with &apos;CommandNotSupportedOnView&apos; when it finds that the namespace is a view.&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="315149">SERVER-26037</key>
            <summary>DocumentSourceCursor should report appropriate error on encountering a view</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="10038" iconUrl="https://jira.mongodb.org/images/icons/subtask.gif" description="">Backlog</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="james.wahlin@mongodb.com">James Wahlin</reporter>
                        <labels>
                            <label>open_todo_in_code</label>
                            <label>read-only-views</label>
                    </labels>
                <created>Fri, 9 Sep 2016 13:20:04 +0000</created>
                <updated>Tue, 6 Dec 2022 04:17:07 +0000</updated>
                                                                            <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
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            <issuekey id="264231">SERVER-22541</issuekey>
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