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    <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-32912] killCursors on pinned cursor may not do anything</title>
                <link>https://jira.mongodb.org/browse/SERVER-32912</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If operation is running &lt;tt&gt;killCursors&lt;/tt&gt; command while another is using the cursor, the killing operation will interrupt the operation using the cursor.&lt;/p&gt;

&lt;p&gt;However, if the operation using the cursor is towards the end of a &lt;tt&gt;getMore&lt;/tt&gt; (for example, serializing the batch to be sent, like it does &lt;a href=&quot;https://github.com/mongodb/mongo/blob/0ebed531c6506e8538858758a6af5b8eb9da7ed2/src/mongo/db/commands/getmore_cmd.cpp#L380-L383&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;), it may not check for interrupts. This means that it will not delete the cursor when it completes, and that future {{getMore}}s will succeed.&lt;/p&gt;

&lt;p&gt;To fix this, when a cursor is checked in (or unpinned) we should (under the cursor manager lock) check whether the operation was interrupted or not. If it was, we put the cursor into a special &quot;killed&quot; state so that the next attempt to check out the cursor results in an error (todo: discuss details more with Charlie. We could also just delete the cursor if this is super hard).&lt;/p&gt;

&lt;p&gt;To test this we may have to add another failpoint in &lt;tt&gt;getMore&lt;/tt&gt; at the &lt;em&gt;end&lt;/em&gt; of the function, at which point there won&apos;t be any more checks for interrupts.&lt;/p&gt;</description>
                <environment></environment>
        <key id="487573">SERVER-32912</key>
            <summary>killCursors on pinned cursor may not do anything</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="13201">Fixed</resolution>
                                        <assignee username="bernard.gorman@mongodb.com">Bernard Gorman</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                    </labels>
                <created>Thu, 25 Jan 2018 22:59:14 +0000</created>
                <updated>Mon, 30 Oct 2023 23:08:58 +0000</updated>
                            <resolved>Tue, 13 Feb 2018 11:40:18 +0000</resolved>
                                                    <fixVersion>3.7.3</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1805591" author="xgen-internal-githook" created="Wed, 14 Feb 2018 15:38:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32912&quot; title=&quot;killCursors on pinned cursor may not do anything&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32912&quot;&gt;&lt;del&gt;SERVER-32912&lt;/del&gt;&lt;/a&gt; Blacklist kill_pinned_cursor.js from sharding_last_stable_mongos_and_mixed_shards suite&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/755b04e335297e428bf5634e4bf72944c00df1a1&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/755b04e335297e428bf5634e4bf72944c00df1a1&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1804035" author="xgen-internal-githook" created="Tue, 13 Feb 2018 11:39:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;bernard.gorman@gmail.com&apos;, &apos;name&apos;: &apos;Bernard Gorman&apos;, &apos;username&apos;: &apos;gormanb&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-32912&quot; title=&quot;killCursors on pinned cursor may not do anything&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-32912&quot;&gt;&lt;del&gt;SERVER-32912&lt;/del&gt;&lt;/a&gt; Ensure that killCursors always invalidates a pinned cursor&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1221b80ee0d65879a4c76ff98f78e92b53766cc0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1221b80ee0d65879a4c76ff98f78e92b53766cc0&lt;/a&gt;&lt;/p&gt;</comment>
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