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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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            <title>[SERVER-63660] Unit test view catalog behavior erroring on commit if there was a concurrent collection/view creation on the same namespace</title>
                <link>https://jira.mongodb.org/browse/SERVER-63660</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57250&quot; title=&quot;CollectionCatalog should handle and own Views instead of ViewCatalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57250&quot;&gt;&lt;del&gt;SERVER-57250&lt;/del&gt;&lt;/a&gt; is adding a check on view creation that collection creation on the same namespace doesn&apos;t race on commit, throwing an error if there&apos;s a conflict.&#160;We need to unit test that everything behaves correctly &#8211; &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-57250&quot; title=&quot;CollectionCatalog should handle and own Views instead of ViewCatalog&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-57250&quot;&gt;&lt;del&gt;SERVER-57250&lt;/del&gt;&lt;/a&gt; is deferring testing to this ticket.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1983718">SERVER-63660</key>
            <summary>Unit test view catalog behavior erroring on commit if there was a concurrent collection/view creation on the same namespace</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="backlog-server-execution">Backlog - Storage Execution Team</assignee>
                                    <reporter username="dianna.hohensee@mongodb.com">Dianna Hohensee</reporter>
                        <labels>
                            <label>neweng</label>
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                <created>Tue, 15 Feb 2022 15:21:13 +0000</created>
                <updated>Mon, 5 Jun 2023 15:25:35 +0000</updated>
                            <resolved>Mon, 5 Jun 2023 15:25:35 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5474947" author="connie.chen" created="Mon, 5 Jun 2023 15:25:35 +0000"  >&lt;p&gt;Closing this as &quot;won&apos;t do&quot; as we currently are comfortable with the level of test coverage we have. If we discover a bug, we should revisit creating this unit test.&#160;&lt;/p&gt;</comment>
                            <comment id="4356801" author="dianna.hohensee" created="Tue, 15 Feb 2022 18:16:26 +0000"  >&lt;p&gt;Henrik dug up code confirming that the UncommittedCollection code path does already check for view namespace conflicts.&lt;/p&gt;

&lt;p&gt;&quot;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/db/catalog/collection_catalog.cpp#L958-L962&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;This code&lt;/a&gt; runs in a&#160;&lt;tt&gt;preCommitHandler&lt;/tt&gt;&#160;under&#160;&lt;tt&gt;CollectionCatalog::write&lt;/tt&gt;&#160;so it is serialized. If there is a view on the namespace we fail the collection creation. It uses uassert instead of WCE as we can&apos;t retry the collection creation, the view is still there.&quot;&lt;/p&gt;

&lt;p&gt;So I&apos;ll update this ticket to just add unit testing for the new view code behavior, and check that the collection behavior is exercised in unit-testing, too.&lt;/p&gt;</comment>
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