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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-17763] Make unpin of ClientCursor exception safe for getMore on aggregation cursors</title>
                <link>https://jira.mongodb.org/browse/SERVER-17763</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Locking behavior for getMore on an aggregation cursor is special. In particular, MODE_IS database and collection locks are only acquired in order to unpin the ClientCursor.&lt;/p&gt;

&lt;p&gt;The implementation of this is currently not exception safe: currently, if an exception is thrown during the execution of the query, the ClientCursor will be unpinned out of the locks (&lt;a href=&quot;https://github.com/mongodb/mongo/blob/66c14dd70dd4427fef0d424b9675570614e13ca7/src/mongo/db/query/find.cpp#L457-L458&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;see TODO in the code&lt;/a&gt;).&lt;/p&gt;</description>
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        <key id="192332">SERVER-17763</key>
            <summary>Make unpin of ClientCursor exception safe for getMore on aggregation cursors</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>
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                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="backlog-query-execution">Backlog - Query Execution</assignee>
                                    <reporter username="david.storch@mongodb.com">David Storch</reporter>
                        <labels>
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                <created>Thu, 26 Mar 2015 22:14:02 +0000</created>
                <updated>Tue, 6 Dec 2022 04:53:58 +0000</updated>
                                                                            <component>Querying</component>
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