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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-38064] Pipeline::dispose() should not check for stale databaseVersion</title>
                <link>https://jira.mongodb.org/browse/SERVER-38064</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;As part of cleaning up the execution machinery for an aggregation cursor, &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1c2b3f3ad137758d6cc6275a61841b0836095d6b/src/mongo/db/pipeline/pipeline.h#L170-L182&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;Pipeline::dispose()&lt;/tt&gt;&lt;/a&gt; must be called before calling the &lt;tt&gt;Pipeline&lt;/tt&gt; destructor. For exception safety, we use a &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1c2b3f3ad137758d6cc6275a61841b0836095d6b/src/mongo/db/pipeline/pipeline.h#L406-L444&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;std::unique_ptr &lt;tt&gt;Deleter&lt;/tt&gt;&lt;/a&gt; to ensure that &lt;tt&gt;Pipeline::dispose()&lt;/tt&gt; is called whenever an error occurs.&lt;/p&gt;

&lt;p&gt;This implies &lt;tt&gt;Pipeline::dispose()&lt;/tt&gt; cannot throw, since it may be called when an exception is already active. However, &lt;tt&gt;DocumentSourceCursor::doDispose()&lt;/tt&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/1c2b3f3ad137758d6cc6275a61841b0836095d6b/src/mongo/db/pipeline/document_source_cursor.cpp#L278&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;constructs an &lt;tt&gt;AutoGetDb&lt;/tt&gt;&lt;/a&gt;. &lt;tt&gt;AutoGetDb&lt;/tt&gt; can throw an exception on construction due to stale &lt;tt&gt;databaseVersion&lt;/tt&gt;. Since we don&apos;t attach a databaseVersion for aggregate commands, we have only ever observed this scenario for explain of an aggregate command. Still, skipping the stale databaseVersion check in the disposal process would ensure that we never run into a double-exception bug.&lt;/p&gt;</description>
                <environment></environment>
        <key id="631867">SERVER-38064</key>
            <summary>Pipeline::dispose() should not check for stale databaseVersion</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="13203">Gone away</resolution>
                                        <assignee username="backlog-server-query">Backlog - Query Team</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
                    </labels>
                <created>Fri, 9 Nov 2018 20:35:35 +0000</created>
                <updated>Fri, 27 Oct 2023 20:43:10 +0000</updated>
                            <resolved>Tue, 5 Feb 2019 17:25:18 +0000</resolved>
                                                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="2138376" author="david.storch" created="Tue, 5 Feb 2019 17:25:09 +0000"  >&lt;p&gt;The problematic construction of an &lt;tt&gt;AutoGetDb&lt;/tt&gt; was removed by &lt;a href=&quot;https://github.com/mongodb/mongo/commit/84b142d5123c06212ce7a2e495ae8afe48eb65cb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;84b142d512&lt;/a&gt; under &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-37455&quot; title=&quot;Take CursorManager out of Collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-37455&quot;&gt;&lt;del&gt;SERVER-37455&lt;/del&gt;&lt;/a&gt;. Therefore, this issue is no longer present in the master branch. I&apos;m resolving this ticket as &quot;Gone Away&quot;.&lt;/p&gt;</comment>
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            <issuekey id="631856">SERVER-38063</issuekey>
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