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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-47869] Add diagnostic logging to ClusterCursorManager</title>
                <link>https://jira.mongodb.org/browse/SERVER-47869</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27796&quot; title=&quot;Invariant failure in cluster_cursor_manager.cpp, numDeleted == 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27796&quot;&gt;&lt;del&gt;SERVER-27796&lt;/del&gt;&lt;/a&gt; has not been reproduced in our own testing environment but numerous customers have encountered it. Under this ticket we will introduce some additional logging to help diagnose the issue the next time someone sees it in the field.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1335148">SERVER-47869</key>
            <summary>Add diagnostic logging to ClusterCursorManager</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="13201">Fixed</resolution>
                                        <assignee username="ian.boros@mongodb.com">Ian Boros</assignee>
                                    <reporter username="ian.boros@mongodb.com">Ian Boros</reporter>
                        <labels>
                            <label>qexec-team</label>
                    </labels>
                <created>Thu, 30 Apr 2020 22:58:39 +0000</created>
                <updated>Sun, 29 Oct 2023 22:08:50 +0000</updated>
                            <resolved>Tue, 18 Aug 2020 16:06:55 +0000</resolved>
                                                    <fixVersion>4.7.0</fixVersion>
                    <fixVersion>4.0.23</fixVersion>
                    <fixVersion>4.4.4</fixVersion>
                    <fixVersion>4.2.13</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3597258" author="xgen-internal-githook" created="Wed, 3 Feb 2021 16:54:22 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47869&quot; title=&quot;Add diagnostic logging to ClusterCursorManager&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47869&quot;&gt;&lt;del&gt;SERVER-47869&lt;/del&gt;&lt;/a&gt; Add debug logging mechanism to mongos cursor manager&lt;/p&gt;

&lt;p&gt;There is a bug in the mongos cursor manager tracked by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27796&quot; title=&quot;Invariant failure in cluster_cursor_manager.cpp, numDeleted == 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27796&quot;&gt;&lt;del&gt;SERVER-27796&lt;/del&gt;&lt;/a&gt; which has never been reproduced&lt;br/&gt;
in our testing environment but has been encountered by multiple customers. This change adds a small&lt;br/&gt;
diagnostic log to the mongos cursor manager which is dumped when a symptom of the bug is found.&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/30ebef0be7a29c9f7f7630615419eaead7c071c5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/30ebef0be7a29c9f7f7630615419eaead7c071c5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3595857" author="xgen-internal-githook" created="Tue, 2 Feb 2021 21:57:32 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47869&quot; title=&quot;Add diagnostic logging to ClusterCursorManager&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47869&quot;&gt;&lt;del&gt;SERVER-47869&lt;/del&gt;&lt;/a&gt; Add debug logging mechanism to mongos cursor manager&lt;/p&gt;

&lt;p&gt;There is a bug in the mongos cursor manager tracked by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27796&quot; title=&quot;Invariant failure in cluster_cursor_manager.cpp, numDeleted == 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27796&quot;&gt;&lt;del&gt;SERVER-27796&lt;/del&gt;&lt;/a&gt; which has never been reproduced&lt;br/&gt;
in our testing environment but has been encountered by multiple customers. This change adds a small&lt;br/&gt;
diagnostic log to the mongos cursor manager which is dumped when a symptom of the bug is found.&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1c66cbdf54e8846022c47aa16e53e7c1750756e2&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1c66cbdf54e8846022c47aa16e53e7c1750756e2&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3593654" author="xgen-internal-githook" created="Mon, 1 Feb 2021 21:49:51 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47869&quot; title=&quot;Add diagnostic logging to ClusterCursorManager&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47869&quot;&gt;&lt;del&gt;SERVER-47869&lt;/del&gt;&lt;/a&gt; Add debug logging mechanism to mongos cursor manager&lt;/p&gt;

&lt;p&gt;There is a bug in the mongos cursor manager tracked by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27796&quot; title=&quot;Invariant failure in cluster_cursor_manager.cpp, numDeleted == 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27796&quot;&gt;&lt;del&gt;SERVER-27796&lt;/del&gt;&lt;/a&gt; which has never been reproduced&lt;br/&gt;
in our testing environment but has been encountered by multiple customers. This change adds a small&lt;br/&gt;
diagnostic log to the mongos cursor manager which is dumped when a symptom of the bug is found.&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e1233abcbe7e5950c0a200f10277629352922750&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e1233abcbe7e5950c0a200f10277629352922750&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3345227" author="xgen-internal-githook" created="Tue, 18 Aug 2020 15:47:29 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ian Boros&apos;, &apos;email&apos;: &apos;ian.boros@mongodb.com&apos;, &apos;username&apos;: &apos;puppyofkosh&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-47869&quot; title=&quot;Add diagnostic logging to ClusterCursorManager&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-47869&quot;&gt;&lt;del&gt;SERVER-47869&lt;/del&gt;&lt;/a&gt; Add debug logging mechanism to mongos cursor manager&lt;/p&gt;

&lt;p&gt;There is a bug in the mongos cursor manager tracked by &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-27796&quot; title=&quot;Invariant failure in cluster_cursor_manager.cpp, numDeleted == 1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-27796&quot;&gt;&lt;del&gt;SERVER-27796&lt;/del&gt;&lt;/a&gt; which has never been reproduced&lt;br/&gt;
in our testing environment but has been encountered by multiple customers. This change adds a small&lt;br/&gt;
diagnostic log to the mongos cursor manager which is dumped when a symptom of the bug is found.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/a87e0194dd863863e77691d4a88409dad85990b8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/a87e0194dd863863e77691d4a88409dad85990b8&lt;/a&gt;&lt;/p&gt;</comment>
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